merged with the debian-experimental-ma branch

76 files changed, 6075 insertions, 1916 deletions

diff --git a/apt-pkg/acquire-item.cc b/apt-pkg/acquire-item.cc
index a959253bc..a289fb7ba 100644
--- a/apt-pkg/acquire-item.cc
+++ b/apt-pkg/acquire-item.cc
@@ -33,6 +33,7 @@
 #include <string>
 #include <sstream>
 #include <stdio.h>
+#include <ctime>
 									/*}}}*/
 
 using namespace std;
@@ -81,7 +82,7 @@ void pkgAcquire::Item::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
       Status = StatError;
       Dequeue();
    }   
-   
+
    // report mirror failure back to LP if we actually use a mirror
    string FailReason = LookupTag(Message, "FailReason");
    if(FailReason.size() != 0)
@@ -139,7 +140,8 @@ void pkgAcquire::Item::Rename(string From,string To)
    }   
 }
 									/*}}}*/
-
+// Acquire::Item::ReportMirrorFailure					/*{{{*/
+// ---------------------------------------------------------------------
 void pkgAcquire::Item::ReportMirrorFailure(string FailCode)
 {
    // we only act if a mirror was used at all
@@ -181,7 +183,7 @@ void pkgAcquire::Item::ReportMirrorFailure(string FailCode)
 		      _config->Find("Methods::Mirror::ProblemReporting").c_str());
    }
 }
-
+									/*}}}*/
 // AcqDiffIndex::AcqDiffIndex - Constructor				/*{{{*/
 // ---------------------------------------------------------------------
 /* Get the DiffIndex file first and see if there are patches availabe 
@@ -278,7 +280,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)		/*{{{*/
       ss >> ServerSha1 >> size;
       unsigned long const ServerSize = atol(size.c_str());
 
-      FileFd fd(CurrentPackagesFile, FileFd::ReadOnly);
+      FileFd fd(CurrentPackagesFile, FileFd::ReadOnlyGzip);
       SHA1Summation SHA1;
       SHA1.AddFD(fd.Fd(), fd.Size());
       string const local_sha1 = SHA1.Result();
@@ -360,7 +362,7 @@ bool pkgAcqDiffIndex::ParseDiffIndex(string IndexDiffFile)		/*{{{*/
 	 if(last_space != string::npos)
 	    Description.erase(last_space, Description.size()-last_space);
 	 new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
-			      ExpectedHash, available_patches);
+			      ExpectedHash, ServerSha1, available_patches);
 	 Complete = false;
 	 Status = StatDone;
 	 Dequeue();
@@ -428,9 +430,10 @@ void pkgAcqDiffIndex::Done(string Message,unsigned long Size,string Md5Hash,	/*{
 pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
 				   string URI,string URIDesc,string ShortDesc,
 				   HashString ExpectedHash, 
+				   string ServerSha1,
 				   vector<DiffInfo> diffs)
    : Item(Owner), RealURI(URI), ExpectedHash(ExpectedHash), 
-     available_patches(diffs)
+     available_patches(diffs), ServerSha1(ServerSha1)
 {
    
    DestFile = _config->FindDir("Dir::State::lists") + "partial/";
@@ -508,7 +511,7 @@ bool pkgAcqIndexDiffs::QueueNextDiff()					/*{{{*/
    string FinalFile = _config->FindDir("Dir::State::lists");
    FinalFile += URItoFileName(RealURI);
 
-   FileFd fd(FinalFile, FileFd::ReadOnly);
+   FileFd fd(FinalFile, FileFd::ReadOnlyGzip);
    SHA1Summation SHA1;
    SHA1.AddFD(fd.Fd(), fd.Size());
    string local_sha1 = string(SHA1.Result());
@@ -516,6 +519,13 @@ bool pkgAcqIndexDiffs::QueueNextDiff()					/*{{{*/
       std::clog << "QueueNextDiff: " 
 		<< FinalFile << " (" << local_sha1 << ")"<<std::endl;
 
+   // final file reached before all patches are applied
+   if(local_sha1 == ServerSha1)
+   {
+      Finish(true);
+      return true;
+   }
+
    // remove all patches until the next matching patch is found
    // this requires the Index file to be ordered
    for(vector<DiffInfo>::iterator I=available_patches.begin();
@@ -613,7 +623,7 @@ void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,	/*
       // see if there is more to download
       if(available_patches.size() > 0) {
 	 new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
-			      ExpectedHash, available_patches);
+			      ExpectedHash, ServerSha1, available_patches);
 	 return Finish();
       } else 
 	 return Finish(true);
@@ -662,6 +672,8 @@ string pkgAcqIndex::Custom600Headers()
 {
    string Final = _config->FindDir("Dir::State::lists");
    Final += URItoFileName(RealURI);
+   if (_config->FindB("Acquire::GzipIndexes",false))
+      Final += ".gz";
    
    struct stat Buf;
    if (stat(Final.c_str(),&Buf) != 0)
@@ -779,18 +791,36 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,
       ErrorText = "Method gave a blank filename";
    }
    
+   string compExt = flExtension(flNotDir(URI(Desc.URI).Path));
+
    // The files timestamp matches
-   if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
+   if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true) {
+       if (_config->FindB("Acquire::GzipIndexes",false) && compExt == "gz")
+	  // Update DestFile for .gz suffix so that the clean operation keeps it
+	  DestFile += ".gz";
       return;
+    }
 
    if (FileName == DestFile)
       Erase = true;
    else
       Local = true;
    
-   string compExt = flExtension(flNotDir(URI(Desc.URI).Path));
    string decompProg;
 
+   // If we enable compressed indexes and already have gzip, keep it
+   if (_config->FindB("Acquire::GzipIndexes",false) && compExt == "gz" && !Local) {
+      string FinalFile = _config->FindDir("Dir::State::lists");
+      FinalFile += URItoFileName(RealURI) + ".gz";
+      Rename(DestFile,FinalFile);
+      chmod(FinalFile.c_str(),0644);
+      
+      // Update DestFile for .gz suffix so that the clean operation keeps it
+      DestFile = _config->FindDir("Dir::State::lists") + "partial/";
+      DestFile += URItoFileName(RealURI) + ".gz";
+      return;
+    }
+
    // get the binary name for your used compression type
    decompProg = _config->Find(string("Acquire::CompressionTypes::").append(compExt),"");
    if(decompProg.empty() == false);
@@ -822,6 +852,19 @@ pkgAcqIndexTrans::pkgAcqIndexTrans(pkgAcquire *Owner,
 {
 }
 									/*}}}*/
+// AcqIndexTrans::Custom600Headers - Insert custom request headers	/*{{{*/
+// ---------------------------------------------------------------------
+string pkgAcqIndexTrans::Custom600Headers()
+{
+   string Final = _config->FindDir("Dir::State::lists");
+   Final += URItoFileName(RealURI);
+
+   struct stat Buf;
+   if (stat(Final.c_str(),&Buf) != 0)
+      return "\nFail-Ignore: true";
+   return "\nFail-Ignore: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
+}
+									/*}}}*/
 // AcqIndexTrans::Failed - Silence failure messages for missing files	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -1149,13 +1192,16 @@ void pkgAcqMetaIndex::QueueIndexes(bool verify)				/*{{{*/
             return;
          }
       }
-      
-      // Queue Packages file (either diff or full packages files, depending
-      // on the users option)
-      if(_config->FindB("Acquire::PDiffs",false) == true) 
+
+      /* Queue Packages file (either diff or full packages files, depending
+         on the users option) - we also check if the PDiff Index file is listed
+         in the Meta-Index file. Ideal would be if pkgAcqDiffIndex would test this
+         instead, but passing the required info to it is to much hassle */
+      if(_config->FindB("Acquire::PDiffs",true) == true && (verify == false ||
+	  MetaIndexParser->Exists(string((*Target)->MetaKey).append(".diff/Index")) == true))
 	 new pkgAcqDiffIndex(Owner, (*Target)->URI, (*Target)->Description,
 			     (*Target)->ShortDesc, ExpectedIndexHash);
-      else 
+      else
 	 new pkgAcqIndex(Owner, (*Target)->URI, (*Target)->Description,
 			    (*Target)->ShortDesc, ExpectedIndexHash);
    }
@@ -1221,6 +1267,17 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message)			/*{{{*/
       Transformed = "";
    }
 
+   if (_config->FindB("Acquire::Check-Valid-Until", true) == true &&
+       MetaIndexParser->GetValidUntil() > 0) {
+      time_t const invalid_since = time(NULL) - MetaIndexParser->GetValidUntil();
+      if (invalid_since > 0)
+	 // TRANSLATOR: The first %s is the URL of the bad Release file, the second is
+	 // the time since then the file is invalid - formated in the same way as in
+	 // the download progress display (e.g. 7d 3h 42min 1s)
+	 return _error->Error(_("Release file expired, ignoring %s (invalid since %s)"),
+	                      RealURI.c_str(), TimeToStr(invalid_since).c_str());
+   }
+
    if (_config->FindB("Debug::pkgAcquire::Auth", false)) 
    {
       std::cerr << "Got Codename: " << MetaIndexParser->GetDist() << std::endl;
@@ -1238,7 +1295,7 @@ bool pkgAcqMetaIndex::VerifyVendor(string Message)			/*{{{*/
 //       return false;
       if (!Transformed.empty())
       {
-         _error->Warning("Conflicting distribution: %s (expected %s but got %s)",
+         _error->Warning(_("Conflicting distribution: %s (expected %s but got %s)"),
                          Desc.Description.c_str(),
                          Transformed.c_str(),
                          MetaIndexParser->GetDist().c_str());
@@ -1371,7 +1428,8 @@ pkgAcqArchive::pkgAcqArchive(pkgAcquire *Owner,pkgSourceList *Sources,
    the archive is already available in the cache and stashs the MD5 for
    checking later. */
 bool pkgAcqArchive::QueueNext()
-{   
+{
+   string const ForceHash = _config->Find("Acquire::ForceHash");
    for (; Vf.end() == false; Vf++)
    {
       // Ignore not source sources
@@ -1394,12 +1452,25 @@ bool pkgAcqArchive::QueueNext()
 	 return false;
       
       string PkgFile = Parse.FileName();
-      if(Parse.SHA256Hash() != "")
-	 ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
-      else if (Parse.SHA1Hash() != "")
-	 ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
-      else 
-	 ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
+      if (ForceHash.empty() == false)
+      {
+	 if(stringcasecmp(ForceHash, "sha256") == 0)
+	    ExpectedHash = HashString("SHA256", Parse.SHA256Hash());
+	 else if (stringcasecmp(ForceHash, "sha1") == 0)
+	    ExpectedHash = HashString("SHA1", Parse.SHA1Hash());
+	 else
+	    ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
+      }
+      else
+      {
+	 string Hash;
+	 if ((Hash = Parse.SHA256Hash()).empty() == false)
+	    ExpectedHash = HashString("SHA256", Hash);
+	 else if ((Hash = Parse.SHA1Hash()).empty() == false)
+	    ExpectedHash = HashString("SHA1", Hash);
+	 else
+	    ExpectedHash = HashString("MD5Sum", Parse.MD5Hash());
+      }
       if (PkgFile.empty() == true)
 	 return _error->Error(_("The package index files are corrupted. No Filename: "
 			      "field for package %s."),
@@ -1591,8 +1662,9 @@ void pkgAcqArchive::Finished()
 /* The file is added to the queue */
 pkgAcqFile::pkgAcqFile(pkgAcquire *Owner,string URI,string Hash,
 		       unsigned long Size,string Dsc,string ShortDesc,
-		       const string &DestDir, const string &DestFilename) :
-                       Item(Owner), ExpectedHash(Hash)
+		       const string &DestDir, const string &DestFilename,
+                       bool IsIndexFile) :
+                       Item(Owner), ExpectedHash(Hash), IsIndexFile(IsIndexFile)
 {
    Retries = _config->FindI("Acquire::Retries",0);
    
@@ -1638,7 +1710,7 @@ void pkgAcqFile::Done(string Message,unsigned long Size,string CalcHash,
    if(!ExpectedHash.empty() && ExpectedHash.toStr() != CalcHash)
    {
       Status = StatError;
-      ErrorText = "Hash Sum mismatch";
+      ErrorText = _("Hash Sum mismatch");
       Rename(DestFile,DestFile + ".FAILED");
       return;
    }
@@ -1707,3 +1779,13 @@ void pkgAcqFile::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
    Item::Failed(Message,Cnf);
 }
 									/*}}}*/
+// AcqIndex::Custom600Headers - Insert custom request headers		/*{{{*/
+// ---------------------------------------------------------------------
+/* The only header we use is the last-modified header. */
+string pkgAcqFile::Custom600Headers()
+{
+   if (IsIndexFile)
+      return "\nIndex-File: true";
+   return "";
+}
+									/*}}}*/
diff --git a/apt-pkg/acquire-item.h b/apt-pkg/acquire-item.h
index 06fcffc73..943c61876 100644
--- a/apt-pkg/acquire-item.h
+++ b/apt-pkg/acquire-item.h
@@ -27,6 +27,7 @@
 #include <apt-pkg/pkgrecords.h>
 #include <apt-pkg/indexrecords.h>
 #include <apt-pkg/hashes.h>
+#include <apt-pkg/weakptr.h>
 
 /** \addtogroup acquire
  *  @{
@@ -46,7 +47,7 @@
  *
  *  \see pkgAcquire
  */
-class pkgAcquire::Item
+class pkgAcquire::Item : public WeakPointable
 {  
    protected:
    
@@ -111,10 +112,10 @@ class pkgAcquire::Item
    string ErrorText;
 
    /** \brief The size of the object to fetch. */
-   unsigned long FileSize;
+   unsigned long long FileSize;
 
    /** \brief How much of the object was already fetched. */
-   unsigned long PartialSize;
+   unsigned long long PartialSize;
 
    /** \brief If not \b NULL, contains the name of a subprocess that
     *  is operating on this object (for instance, "gzip" or "gpgv").
@@ -434,6 +435,10 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
     *  off the front?
     */
    vector<DiffInfo> available_patches;
+
+   /** Stop applying patches when reaching that sha1 */
+   string ServerSha1;
+
    /** The current status of this patch. */
    enum DiffState
      {
@@ -487,6 +492,7 @@ class pkgAcqIndexDiffs : public pkgAcquire::Item
     */
    pkgAcqIndexDiffs(pkgAcquire *Owner,string URI,string URIDesc,
 		    string ShortDesc, HashString ExpectedHash,
+		    string ServerSha1,
 		    vector<DiffInfo> diffs=vector<DiffInfo>());
 };
 									/*}}}*/
@@ -573,6 +579,7 @@ class pkgAcqIndexTrans : public pkgAcqIndex
    public:
   
    virtual void Failed(string Message,pkgAcquire::MethodConfig *Cnf);
+   virtual string Custom600Headers();
 
    /** \brief Create a pkgAcqIndexTrans.
     *
@@ -868,6 +875,9 @@ class pkgAcqFile : public pkgAcquire::Item
     */
    unsigned int Retries;
    
+   /** \brief Should this file be considered a index file */
+   bool IsIndexFile;
+
    public:
    
    // Specialized action members
@@ -876,6 +886,7 @@ class pkgAcqFile : public pkgAcquire::Item
 		     pkgAcquire::MethodConfig *Cnf);
    virtual string DescURI() {return Desc.URI;};
    virtual string HashSum() {return ExpectedHash.toStr(); };
+   virtual string Custom600Headers();
 
    /** \brief Create a new pkgAcqFile object.
     *
@@ -899,6 +910,8 @@ class pkgAcqFile : public pkgAcquire::Item
     *
     *  \param DestFilename The filename+path the file is downloaded to.
     *
+    *  \param IsIndexFile The file is considered a IndexFile and cache-control
+    *                     headers like "cache-control: max-age=0" are send
     *
     * If DestFilename is empty, download to DestDir/<basename> if
     * DestDir is non-empty, $CWD/<basename> otherwise.  If
@@ -908,7 +921,8 @@ class pkgAcqFile : public pkgAcquire::Item
 
    pkgAcqFile(pkgAcquire *Owner, string URI, string Hash, unsigned long Size,
 	      string Desc, string ShortDesc,
-	      const string &DestDir="", const string &DestFilename="");
+	      const string &DestDir="", const string &DestFilename="",
+	      bool IsIndexFile=false);
 };
 									/*}}}*/
 /** @} */
diff --git a/apt-pkg/acquire-method.cc b/apt-pkg/acquire-method.cc
index 3008c8d1a..17d52cf51 100644
--- a/apt-pkg/acquire-method.cc
+++ b/apt-pkg/acquire-method.cc
@@ -378,9 +378,10 @@ int pkgAcqMethod::Run(bool Single)
 	    
 	    Tmp->Uri = LookupTag(Message,"URI");
 	    Tmp->DestFile = LookupTag(Message,"FileName");
-	    if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
+	    if (RFC1123StrToTime(LookupTag(Message,"Last-Modified").c_str(),Tmp->LastModified) == false)
 	       Tmp->LastModified = 0;
 	    Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
+	    Tmp->FailIgnore = StringToBool(LookupTag(Message,"Fail-Ignore"),false);
 	    Tmp->Next = 0;
 	    
 	    // Append it to the list
diff --git a/apt-pkg/acquire-method.h b/apt-pkg/acquire-method.h
index 99a4605b1..03851e823 100644
--- a/apt-pkg/acquire-method.h
+++ b/apt-pkg/acquire-method.h
@@ -37,6 +37,7 @@ class pkgAcqMethod
       string DestFile;
       time_t LastModified;
       bool IndexFile;
+      bool FailIgnore;
    };
    
    struct FetchResult
diff --git a/apt-pkg/acquire-worker.h b/apt-pkg/acquire-worker.h
index 2942df69f..06283922e 100644
--- a/apt-pkg/acquire-worker.h
+++ b/apt-pkg/acquire-worker.h
@@ -20,6 +20,7 @@
 #define PKGLIB_ACQUIRE_WORKER_H
 
 #include <apt-pkg/acquire.h>
+#include <apt-pkg/weakptr.h>
 
 
 /** \brief A fetch subprocess.
@@ -41,7 +42,7 @@
  *
  *  \sa pkgAcqMethod, pkgAcquire::Item, pkgAcquire
  */
-class pkgAcquire::Worker
+class pkgAcquire::Worker : public WeakPointable
 {
    friend class pkgAcquire;
    
diff --git a/apt-pkg/acquire.cc b/apt-pkg/acquire.cc
index 74510ae21..63825da93 100644
--- a/apt-pkg/acquire.cc
+++ b/apt-pkg/acquire.cc
@@ -19,6 +19,7 @@
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 
 #include <apti18n.h>
 
@@ -29,7 +30,6 @@
 #include <dirent.h>
 #include <sys/time.h>
 #include <errno.h>
-#include <sys/stat.h>
 									/*}}}*/
 
 using namespace std;
@@ -37,32 +37,81 @@ using namespace std;
 // Acquire::pkgAcquire - Constructor					/*{{{*/
 // ---------------------------------------------------------------------
 /* We grab some runtime state from the configuration space */
-pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
+pkgAcquire::pkgAcquire() : Queues(0), Workers(0), Configs(0), Log(NULL), ToFetch(0),
+			   Debug(_config->FindB("Debug::pkgAcquire",false)),
+			   Running(false), LockFD(-1)
 {
-   Queues = 0;
-   Configs = 0;
-   Workers = 0;
-   ToFetch = 0;
-   Running = false;
-   
-   string Mode = _config->Find("Acquire::Queue-Mode","host");
+   string const Mode = _config->Find("Acquire::Queue-Mode","host");
    if (strcasecmp(Mode.c_str(),"host") == 0)
       QueueMode = QueueHost;
    if (strcasecmp(Mode.c_str(),"access") == 0)
-      QueueMode = QueueAccess;   
+      QueueMode = QueueAccess;
+}
+pkgAcquire::pkgAcquire(pkgAcquireStatus *Progress) : Queues(0), Workers(0),
+			   Configs(0), Log(Progress), ToFetch(0),
+			   Debug(_config->FindB("Debug::pkgAcquire",false)),
+			   Running(false), LockFD(-1)
+{
+   string const Mode = _config->Find("Acquire::Queue-Mode","host");
+   if (strcasecmp(Mode.c_str(),"host") == 0)
+      QueueMode = QueueHost;
+   if (strcasecmp(Mode.c_str(),"access") == 0)
+      QueueMode = QueueAccess;
+   Setup(Progress, "");
+}
+									/*}}}*/
+// Acquire::Setup - Delayed Constructor					/*{{{*/
+// ---------------------------------------------------------------------
+/* Do everything needed to be a complete Acquire object and report the
+   success (or failure) back so the user knows that something is wrong… */
+bool pkgAcquire::Setup(pkgAcquireStatus *Progress, string const &Lock)
+{
+   Log = Progress;
 
-   Debug = _config->FindB("Debug::pkgAcquire",false);
-   
-   // This is really a stupid place for this
-   struct stat St;
-   if (stat((_config->FindDir("Dir::State::lists") + "partial/").c_str(),&St) != 0 ||
-       S_ISDIR(St.st_mode) == 0)
-      _error->Error(_("Lists directory %spartial is missing."),
-		    _config->FindDir("Dir::State::lists").c_str());
-   if (stat((_config->FindDir("Dir::Cache::Archives") + "partial/").c_str(),&St) != 0 ||
-       S_ISDIR(St.st_mode) == 0)
-      _error->Error(_("Archive directory %spartial is missing."),
-		    _config->FindDir("Dir::Cache::Archives").c_str());
+   // check for existence and possibly create auxiliary directories
+   string const listDir = _config->FindDir("Dir::State::lists");
+   string const partialListDir = listDir + "partial/";
+   string const archivesDir = _config->FindDir("Dir::Cache::Archives");
+   string const partialArchivesDir = archivesDir + "partial/";
+
+   if (CheckDirectory(_config->FindDir("Dir::State"), partialListDir) == false &&
+       CheckDirectory(listDir, partialListDir) == false)
+      return _error->Errno("Acquire", _("List directory %spartial is missing."), listDir.c_str());
+
+   if (CheckDirectory(_config->FindDir("Dir::Cache"), partialArchivesDir) == false &&
+       CheckDirectory(archivesDir, partialArchivesDir) == false)
+      return _error->Errno("Acquire", _("Archives directory %spartial is missing."), archivesDir.c_str());
+
+   if (Lock.empty() == true || _config->FindB("Debug::NoLocking", false) == true)
+      return true;
+
+   // Lock the directory this acquire object will work in
+   LockFD = GetLock(flCombine(Lock, "lock"));
+   if (LockFD == -1)
+      return _error->Error(_("Unable to lock directory %s"), Lock.c_str());
+
+   return true;
+}
+									/*}}}*/
+// Acquire::CheckDirectory - ensure that the given directory exists	/*{{{*/
+// ---------------------------------------------------------------------
+/* a small wrapper around CreateDirectory to check if it exists and to
+   remove the trailing "/apt/" from the parent directory if needed */
+bool pkgAcquire::CheckDirectory(string const &Parent, string const &Path) const
+{
+   if (DirectoryExists(Path) == true)
+      return true;
+
+   size_t const len = Parent.size();
+   if (len > 5 && Parent.find("/apt/", len - 6, 5) == len - 5)
+   {
+      if (CreateDirectory(Parent.substr(0,len-5), Path) == true)
+	 return true;
+   }
+   else if (CreateDirectory(Parent, Path) == true)
+      return true;
+
+   return false;
 }
 									/*}}}*/
 // Acquire::~pkgAcquire	- Destructor					/*{{{*/
@@ -71,7 +120,10 @@ pkgAcquire::pkgAcquire(pkgAcquireStatus *Log) : Log(Log)
 pkgAcquire::~pkgAcquire()
 {
    Shutdown();
-   
+
+   if (LockFD != -1)
+      close(LockFD);
+
    while (Configs != 0)
    {
       MethodConfig *Jnk = Configs;
@@ -454,9 +506,9 @@ bool pkgAcquire::Clean(string Dir)
 // Acquire::TotalNeeded - Number of bytes to fetch			/*{{{*/
 // ---------------------------------------------------------------------
 /* This is the total number of bytes needed */
-double pkgAcquire::TotalNeeded()
+unsigned long long pkgAcquire::TotalNeeded()
 {
-   double Total = 0;
+   unsigned long long Total = 0;
    for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
       Total += (*I)->FileSize;
    return Total;
@@ -465,9 +517,9 @@ double pkgAcquire::TotalNeeded()
 // Acquire::FetchNeeded - Number of bytes needed to get			/*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */
-double pkgAcquire::FetchNeeded()
+unsigned long long pkgAcquire::FetchNeeded()
 {
-   double Total = 0;
+   unsigned long long Total = 0;
    for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
       if ((*I)->Local == false)
 	 Total += (*I)->FileSize;
@@ -477,9 +529,9 @@ double pkgAcquire::FetchNeeded()
 // Acquire::PartialPresent - Number of partial bytes we already have	/*{{{*/
 // ---------------------------------------------------------------------
 /* This is the number of bytes that is not local */
-double pkgAcquire::PartialPresent()
+unsigned long long pkgAcquire::PartialPresent()
 {
-  double Total = 0;
+  unsigned long long Total = 0;
    for (ItemCIterator I = ItemsBegin(); I != ItemsEnd(); I++)
       if ((*I)->Local == false)
 	 Total += (*I)->PartialSize;
diff --git a/apt-pkg/acquire.h b/apt-pkg/acquire.h
index 6c130c1b3..82be8b843 100644
--- a/apt-pkg/acquire.h
+++ b/apt-pkg/acquire.h
@@ -66,6 +66,9 @@
 #ifndef PKGLIB_ACQUIRE_H
 #define PKGLIB_ACQUIRE_H
 
+#include <apt-pkg/macros.h>
+#include <apt-pkg/weakptr.h>
+
 #include <vector>
 #include <string>
 
@@ -161,7 +164,7 @@ class pkgAcquire
      QueueAccess} QueueMode;
 
    /** \brief If \b true, debugging information will be dumped to std::clog. */
-   bool Debug;
+   bool const Debug;
    /** \brief If \b true, a download is currently in progress. */
    bool Running;
 
@@ -320,27 +323,34 @@ class pkgAcquire
    /** \return the total size in bytes of all the items included in
     *  this download.
     */
-   double TotalNeeded();
+   unsigned long long TotalNeeded();
 
    /** \return the size in bytes of all non-local items included in
     *  this download.
     */
-   double FetchNeeded();
+   unsigned long long FetchNeeded();
 
    /** \return the amount of data to be fetched that is already
     *  present on the filesystem.
     */
-   double PartialPresent();
+   unsigned long long PartialPresent();
 
-   /** \brief Construct a new pkgAcquire.
+   /** \brief Delayed constructor
     *
-    *  \param Log The progress indicator associated with this
-    *  download, or \b NULL for none.  This object is not owned by the
+    *  \param Progress indicator associated with this download or
+    *  \b NULL for none.  This object is not owned by the
     *  download process and will not be deleted when the pkgAcquire
     *  object is destroyed.  Naturally, it should live for at least as
     *  long as the pkgAcquire object does.
+    *  \param Lock defines a lock file that should be acquired to ensure
+    *  only one Acquire class is in action at the time or an empty string
+    *  if no lock file should be used.
     */
-   pkgAcquire(pkgAcquireStatus *Log = 0);
+   bool Setup(pkgAcquireStatus *Progress = NULL, string const &Lock = "");
+
+   /** \brief Construct a new pkgAcquire. */
+   pkgAcquire(pkgAcquireStatus *Log) __deprecated;
+   pkgAcquire();
 
    /** \brief Destroy this pkgAcquire object.
     *
@@ -348,6 +358,18 @@ class pkgAcquire
     *  this download.
     */
    virtual ~pkgAcquire();
+
+   private:
+   /** \brief FD of the Lock file we acquire in Setup (if any) */
+   int LockFD;
+
+   /** \brief Ensure the existence of the given Path
+    *
+    *  \param Parent directory of the Path directory - a trailing
+    *  /apt/ will be removed before CreateDirectory call.
+    *  \param Path which should exist after (successful) call
+    */
+   bool CheckDirectory(string const &Parent, string const &Path) const;
 };
 
 /** \brief Represents a single download source from which an item
@@ -355,7 +377,7 @@ class pkgAcquire
  *
  *  An item may have several assocated ItemDescs over its lifetime.
  */
-struct pkgAcquire::ItemDesc
+struct pkgAcquire::ItemDesc : public WeakPointable
 {
    /** \brief The URI from which to download this item. */
    string URI;
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index a3963d546..f17c76d6c 100644
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -83,13 +83,28 @@ void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Current,bool Candid
 bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
 {
    // Adapt the iterator
-   PkgIterator Pkg = Sim.FindPkg(iPkg.Name());
+   PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
    Flags[Pkg->ID] = 1;
    
    cout << "Inst ";
    Describe(Pkg,cout,true,true);
    Sim.MarkInstall(Pkg,false);
-   
+
+   if (strcmp(Pkg.Arch(),"all") == 0)
+   {
+      pkgCache::GrpIterator G = Pkg.Group();
+      pkgCache::GrpIterator iG = iPkg.Group();
+      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
+      {
+	 if (strcmp(P.Arch(), "all") == 0)
+	    continue;
+	 if (iG.FindPkg(P.Arch())->CurrentVer == 0)
+	    continue;
+	 Flags[P->ID] = 1;
+	 Sim.MarkInstall(P, false);
+      }
+   }
+
    // Look for broken conflicts+predepends.
    for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
    {
@@ -131,9 +146,22 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
 bool pkgSimulate::Configure(PkgIterator iPkg)
 {
    // Adapt the iterator
-   PkgIterator Pkg = Sim.FindPkg(iPkg.Name());
+   PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
    
    Flags[Pkg->ID] = 2;
+
+   if (strcmp(Pkg.Arch(),"all") == 0)
+   {
+      pkgCache::GrpIterator G = Pkg.Group();
+      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
+      {
+	 if (strcmp(P.Arch(), "all") == 0)
+	    continue;
+	 if (Flags[P->ID] == 1)
+	    Flags[P->ID] = 2;
+      }
+   }
+
 //   Sim.MarkInstall(Pkg,false);
    if (Sim[Pkg].InstBroken() == true)
    {
@@ -181,10 +209,26 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
 bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
 {
    // Adapt the iterator
-   PkgIterator Pkg = Sim.FindPkg(iPkg.Name());
+   PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
+
+   if (strcmp(Pkg.Arch(),"all") == 0)
+   {
+      pkgCache::GrpIterator G = Pkg.Group();
+      pkgCache::GrpIterator iG = iPkg.Group();
+      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
+      {
+	 if (strcmp(P.Arch(), "all") == 0)
+	    continue;
+	 if (iG.FindPkg(P.Arch())->CurrentVer == 0)
+	    continue;
+	 Flags[P->ID] = 3;
+	 Sim.MarkDelete(P);
+      }
+   }
+
    if (Purge == true)
       cout << "Purg ";
    else
@@ -491,11 +535,11 @@ void pkgProblemResolver::MakeScores()
    // Important Required Standard Optional Extra
    signed short PrioMap[] = {
       0,
-      _config->FindI("pkgProblemResolver::Scores::Important",3),
-      _config->FindI("pkgProblemResolver::Scores::Required",2),
-      _config->FindI("pkgProblemResolver::Scores::Standard",1),
-      _config->FindI("pkgProblemResolver::Scores::Optional",-1),
-      _config->FindI("pkgProblemResolver::Scores::Extra",-2)
+      (signed short) _config->FindI("pkgProblemResolver::Scores::Important",3),
+      (signed short) _config->FindI("pkgProblemResolver::Scores::Required",2),
+      (signed short) _config->FindI("pkgProblemResolver::Scores::Standard",1),
+      (signed short) _config->FindI("pkgProblemResolver::Scores::Optional",-1),
+      (signed short) _config->FindI("pkgProblemResolver::Scores::Extra",-2)
    };
    signed short PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
    signed short PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
@@ -1353,7 +1397,9 @@ bool ListUpdate(pkgAcquireStatus &Stat,
 		int PulseInterval)
 {
    pkgAcquire::RunResult res;
-   pkgAcquire Fetcher(&Stat);
+   pkgAcquire Fetcher;
+   if (Fetcher.Setup(&Stat, _config->FindDir("Dir::State::Lists")) == false)
+      return false;
 
    // Populate it with the source selection
    if (List.GetIndexes(&Fetcher) == false)
diff --git a/apt-pkg/algorithms.h b/apt-pkg/algorithms.h
index cee30b679..cf4a98c4f 100644
--- a/apt-pkg/algorithms.h
+++ b/apt-pkg/algorithms.h
@@ -48,7 +48,7 @@ class pkgSimulate : public pkgPackageManager				/*{{{*/
       pkgDepCache *Cache;
       public:
       
-      virtual VerIterator GetCandidateVer(PkgIterator Pkg)
+      virtual VerIterator GetCandidateVer(PkgIterator const &Pkg)
       {
 	 return (*Cache)[Pkg].CandidateVerIter(*Cache);
       }
diff --git a/apt-pkg/aptconfiguration.cc b/apt-pkg/aptconfiguration.cc
index 45ae9bed5..44f1f318a 100644
--- a/apt-pkg/aptconfiguration.cc
+++ b/apt-pkg/aptconfiguration.cc
@@ -8,13 +8,19 @@
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
-#include <apt-pkg/fileutl.h>
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/macros.h>
+#include <apt-pkg/strutl.h>
+
+#include <sys/types.h>
+#include <dirent.h>
 
-#include <vector>
-#include <string>
 #include <algorithm>
+#include <string>
+#include <vector>
 									/*}}}*/
 namespace APT {
 // getCompressionTypes - Return Vector of usbale compressiontypes	/*{{{*/
@@ -87,4 +93,271 @@ const Configuration::getCompressionTypes(bool const &Cached) {
 	return types;
 }
 									/*}}}*/
+// GetLanguages - Return Vector of Language Codes			/*{{{*/
+// ---------------------------------------------------------------------
+/* return a vector of language codes in the prefered order.
+   the special word "environment" will be replaced with the long and the short
+   code of the local settings and it will be insured that this will not add
+   duplicates. So in an german local the setting "environment, de_DE, en, de"
+   will result in "de_DE, de, en".
+   The special word "none" is the stopcode for the not-All code vector */
+std::vector<std::string> const Configuration::getLanguages(bool const &All,
+				bool const &Cached, char const ** const Locale) {
+	using std::string;
+
+	// The detection is boring and has a lot of cornercases,
+	// so we cache the results to calculated it only once.
+	std::vector<string> static allCodes;
+	std::vector<string> static codes;
+
+	// we have something in the cache
+	if (codes.empty() == false || allCodes.empty() == false) {
+		if (Cached == true) {
+			if(All == true && allCodes.empty() == false)
+				return allCodes;
+			else
+				return codes;
+		} else {
+			allCodes.clear();
+			codes.clear();
+		}
+	}
+
+	// Include all Language codes we have a Translation file for in /var/lib/apt/lists
+	// so they will be all included in the Cache.
+	std::vector<string> builtin;
+	DIR *D = opendir(_config->FindDir("Dir::State::lists").c_str());
+	if (D != 0) {
+		builtin.push_back("none");
+		for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) {
+			string const name = Ent->d_name;
+			size_t const foundDash = name.rfind("-");
+			size_t const foundUnderscore = name.rfind("_");
+			if (foundDash == string::npos || foundUnderscore == string::npos ||
+			    foundDash <= foundUnderscore ||
+			    name.substr(foundUnderscore+1, foundDash-(foundUnderscore+1)) != "Translation")
+				continue;
+			string const c = name.substr(foundDash+1);
+			if (unlikely(c.empty() == true) || c == "en")
+				continue;
+			// Skip unusual files, like backups or that alike
+			string::const_iterator s = c.begin();
+			for (;s != c.end(); ++s) {
+				if (isalpha(*s) == 0)
+					break;
+			}
+			if (s != c.end())
+				continue;
+			if (std::find(builtin.begin(), builtin.end(), c) != builtin.end())
+				continue;
+			builtin.push_back(c);
+		}
+	}
+	closedir(D);
+
+	// get the environment language codes: LC_MESSAGES (and later LANGUAGE)
+	// we extract both, a long and a short code and then we will
+	// check if we actually need both (rare) or if the short is enough
+	string const envMsg = string(Locale == 0 ? std::setlocale(LC_MESSAGES, NULL) : *Locale);
+	size_t const lenShort = (envMsg.find('_') != string::npos) ? envMsg.find('_') : 2;
+	size_t const lenLong = (envMsg.find_first_of(".@") != string::npos) ? envMsg.find_first_of(".@") : (lenShort + 3);
+
+	string envLong = envMsg.substr(0,lenLong);
+	string const envShort = envLong.substr(0,lenShort);
+	bool envLongIncluded = true;
+
+	// first cornercase: LANG=C, so we use only "en" Translation
+	if (envLong == "C") {
+		codes.push_back("en");
+		allCodes = codes;
+		allCodes.insert(allCodes.end(), builtin.begin(), builtin.end());
+		if (All == true)
+			return allCodes;
+		else
+			return codes;
+	}
+
+	// to save the servers from unneeded queries, we only try also long codes
+	// for languages it is realistic to have a long code translation file…
+	// TODO: Improve translation acquire system to drop them dynamic
+	char const *needLong[] = { "cs", "en", "pt", "sv", "zh", NULL };
+	if (envLong != envShort) {
+		for (char const **l = needLong; *l != NULL; l++)
+			if (envShort.compare(*l) == 0) {
+				envLongIncluded = false;
+				break;
+			}
+	}
+
+	// we don't add the long code, but we allow the user to do so
+	if (envLongIncluded == true)
+		envLong.clear();
+
+	// FIXME: Remove support for the old APT::Acquire::Translation
+	// it was undocumented and so it should be not very widthly used
+	string const oldAcquire = _config->Find("APT::Acquire::Translation","");
+	if (oldAcquire.empty() == false && oldAcquire != "environment") {
+		// TRANSLATORS: the two %s are APT configuration options
+		_error->Notice("Option '%s' is deprecated. Please use '%s' instead, see 'man 5 apt.conf' for details.",
+				"APT::Acquire::Translation", "Acquire::Languages");
+		if (oldAcquire != "none")
+			codes.push_back(oldAcquire);
+		codes.push_back("en");
+		allCodes = codes;
+		for (std::vector<string>::const_iterator b = builtin.begin();
+		     b != builtin.end(); ++b)
+			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+				allCodes.push_back(*b);
+		if (All == true)
+			return allCodes;
+		else
+			return codes;
+	}
+
+	// It is very likely we will need to environment codes later,
+	// so let us generate them now from LC_MESSAGES and LANGUAGE
+	std::vector<string> environment;
+	// take care of LC_MESSAGES
+	if (envLongIncluded == false)
+		environment.push_back(envLong);
+	environment.push_back(envShort);
+	// take care of LANGUAGE
+	const char *language_env = getenv("LANGUAGE") == 0 ? "" : getenv("LANGUAGE");
+	string envLang = Locale == 0 ? language_env : *(Locale+1);
+	if (envLang.empty() == false) {
+		std::vector<string> env = VectorizeString(envLang,':');
+		short addedLangs = 0; // add a maximum of 3 fallbacks from the environment
+		for (std::vector<string>::const_iterator e = env.begin();
+		     e != env.end() && addedLangs < 3; ++e) {
+			if (unlikely(e->empty() == true) || *e == "en")
+				continue;
+			if (*e == envLong || *e == envShort)
+				continue;
+			if (std::find(environment.begin(), environment.end(), *e) != environment.end())
+				continue;
+			if (e->find('_') != string::npos) {
+				// Drop LongCodes here - ShortCodes are also included
+				string const shorty = e->substr(0, e->find('_'));
+				char const **n = needLong;
+				for (; *n != NULL; ++n)
+					if (shorty == *n)
+						break;
+				if (*n == NULL)
+					continue;
+			}
+			++addedLangs;
+			environment.push_back(*e);
+		}
+	}
+
+	// Support settings like Acquire::Translation=none on the command line to
+	// override the configuration settings vector of languages.
+	string const forceLang = _config->Find("Acquire::Languages","");
+	if (forceLang.empty() == false) {
+		if (forceLang == "environment") {
+			codes = environment;
+		} else if (forceLang != "none")
+			codes.push_back(forceLang);
+		allCodes = codes;
+		for (std::vector<string>::const_iterator b = builtin.begin();
+		     b != builtin.end(); ++b)
+			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+				allCodes.push_back(*b);
+		if (All == true)
+			return allCodes;
+		else
+			return codes;
+	}
+
+	std::vector<string> const lang = _config->FindVector("Acquire::Languages");
+	// the default setting -> "environment, en"
+	if (lang.empty() == true) {
+		codes = environment;
+		if (envShort != "en")
+			codes.push_back("en");
+		allCodes = codes;
+		for (std::vector<string>::const_iterator b = builtin.begin();
+		     b != builtin.end(); ++b)
+			if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+				allCodes.push_back(*b);
+		if (All == true)
+			return allCodes;
+		else
+			return codes;
+	}
+
+	// the configs define the order, so add the environment
+	// then needed and ensure the codes are not listed twice.
+	bool noneSeen = false;
+	for (std::vector<string>::const_iterator l = lang.begin();
+	     l != lang.end(); l++) {
+		if (*l == "environment") {
+			for (std::vector<string>::const_iterator e = environment.begin();
+			     e != environment.end(); ++e) {
+				if (std::find(allCodes.begin(), allCodes.end(), *e) != allCodes.end())
+					continue;
+				if (noneSeen == false)
+					codes.push_back(*e);
+				allCodes.push_back(*e);
+			}
+			continue;
+		} else if (*l == "none") {
+			noneSeen = true;
+			continue;
+		} else if (std::find(allCodes.begin(), allCodes.end(), *l) != allCodes.end())
+			continue;
+
+		if (noneSeen == false)
+			codes.push_back(*l);
+		allCodes.push_back(*l);
+	}
+
+	for (std::vector<string>::const_iterator b = builtin.begin();
+	     b != builtin.end(); ++b)
+		if (std::find(allCodes.begin(), allCodes.end(), *b) == allCodes.end())
+			allCodes.push_back(*b);
+
+	if (All == true)
+		return allCodes;
+	else
+		return codes;
+}
+									/*}}}*/
+// getArchitectures - Return Vector of prefered Architectures		/*{{{*/
+std::vector<std::string> const Configuration::getArchitectures(bool const &Cached) {
+	using std::string;
+
+	std::vector<string> static archs;
+	if (likely(Cached == true) && archs.empty() == false)
+		return archs;
+
+	archs = _config->FindVector("APT::Architectures");
+	string const arch = _config->Find("APT::Architecture");
+	if (unlikely(arch.empty() == true))
+		return archs;
+
+	if (archs.empty() == true ||
+	    std::find(archs.begin(), archs.end(), arch) == archs.end())
+		archs.push_back(arch);
+
+	// erase duplicates and empty strings
+	for (std::vector<string>::reverse_iterator a = archs.rbegin();
+	     a != archs.rend(); ++a) {
+		if (a->empty() == true || std::find(a + 1, archs.rend(), *a) != archs.rend())
+			archs.erase(a.base()-1);
+		if (a == archs.rend())
+			break;
+	}
+
+	return archs;
+}
+									/*}}}*/
+// checkArchitecture - are we interested in the given Architecture?	/*{{{*/
+bool const Configuration::checkArchitecture(std::string const &Arch) {
+	if (Arch == "all")
+		return true;
+	std::vector<std::string> const archs = getArchitectures(true);
+	return (std::find(archs.begin(), archs.end(), Arch) != archs.end());
+}
+									/*}}}*/
 }
diff --git a/apt-pkg/aptconfiguration.h b/apt-pkg/aptconfiguration.h
index 6a123adce..dd339d841 100644
--- a/apt-pkg/aptconfiguration.h
+++ b/apt-pkg/aptconfiguration.h
@@ -39,6 +39,49 @@ public:									/*{{{*/
 	 *  \return a vector of (all) Language Codes in the prefered usage order
 	 */
 	std::vector<std::string> static const getCompressionTypes(bool const &Cached = true);
+
+	/** \brief Returns a vector of Language Codes
+	 *
+	 *  Languages can be defined with their two or five chars long code.
+	 *  This methods handles the various ways to set the prefered codes,
+	 *  honors the environment and ensures that the codes are not listed twice.
+	 *
+	 *  The special word "environment" will be replaced with the long and the short
+	 *  code of the local settings and it will be insured that this will not add
+	 *  duplicates. So in an german local the setting "environment, de_DE, en, de"
+	 *  will result in "de_DE, de, en".
+	 *
+	 *  Another special word is "none" which separates the prefered from all codes
+	 *  in this setting. So setting and method can be used to get codes the user want
+	 *  to see or to get all language codes APT (should) have Translations available.
+	 *
+	 *  \param All return all codes or only codes for languages we want to use
+	 *  \param Cached saves the result so we need to calculated it only once
+	 *                this parameter should ony be used for testing purposes.
+	 *  \param Locale don't get the locale from the system but use this one instead
+	 *                this parameter should ony be used for testing purposes.
+	 *
+	 *  \return a vector of (all) Language Codes in the prefered usage order
+	 */
+	std::vector<std::string> static const getLanguages(bool const &All = false,
+			bool const &Cached = true, char const ** const Locale = 0);
+
+	/** \brief Returns a vector of Architectures we support
+	 *
+	 *  \param Cached saves the result so we need to calculated it only once
+	 *                this parameter should ony be used for testing purposes.
+	 *
+	 *  \return a vector of Architectures in prefered order
+	 */
+	std::vector<std::string> static const getArchitectures(bool const &Cached = true);
+
+	/** \brief Are we interested in the given Architecture?
+	 *
+	 *  \param Arch we want to check
+	 *  \return true if we are interested, false otherwise
+	 */
+	bool static const checkArchitecture(std::string const &Arch);
+
 									/*}}}*/
 };
 									/*}}}*/
diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc
index 790312dc8..964c5bd8b 100644
--- a/apt-pkg/cachefile.cc
+++ b/apt-pkg/cachefile.cc
@@ -27,7 +27,8 @@
 // CacheFile::CacheFile - Constructor					/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0)
+pkgCacheFile::pkgCacheFile() : Map(NULL), Cache(NULL), DCache(NULL),
+				SrcList(NULL), Policy(NULL)
 {
 }
 									/*}}}*/
@@ -38,16 +39,30 @@ pkgCacheFile::~pkgCacheFile()
 {
    delete DCache;
    delete Policy;
+   delete SrcList;
    delete Cache;
    delete Map;
    _system->UnLock(true);
-}   
+}
 									/*}}}*/
 // CacheFile::BuildCaches - Open and build the cache files		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgCacheFile::BuildCaches(OpProgress &Progress,bool WithLock)
+bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
 {
+   if (Cache != NULL)
+      return true;
+
+   if (_config->FindB("pkgCacheFile::Generate", true) == false)
+   {
+      Map = new MMap(*new FileFd(_config->FindFile("Dir::Cache::pkgcache"),
+		     FileFd::ReadOnly),MMap::Public|MMap::ReadOnly);
+      Cache = new pkgCache(Map);
+      if (_error->PendingError() == true)
+         return false;
+      return true;
+   }
+
    const bool ErrorWasEmpty = _error->empty();
    if (WithLock == true)
       if (_system->Lock() == false)
@@ -58,15 +73,13 @@ bool pkgCacheFile::BuildCaches(OpProgress &Progress,bool WithLock)
       
    if (_error->PendingError() == true)
       return false;
-   
-   // Read the source list
-   pkgSourceList List;
-   if (List.ReadMainList() == false)
-      return _error->Error(_("The list of sources could not be read."));
+
+   BuildSourceList(Progress);
 
    // Read the caches
-   bool Res = pkgMakeStatusCache(List,Progress,&Map,!WithLock);
-   Progress.Done();
+   bool Res = pkgCacheGenerator::MakeStatusCache(*SrcList,Progress,&Map,!WithLock);
+   if (Progress != NULL)
+      Progress->Done();
    if (Res == false)
       return _error->Error(_("The package lists or status file could not be parsed or opened."));
 
@@ -80,29 +93,70 @@ bool pkgCacheFile::BuildCaches(OpProgress &Progress,bool WithLock)
    return true;
 }
 									/*}}}*/
-// CacheFile::Open - Open the cache files, creating if necessary	/*{{{*/
+// CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock)
+bool pkgCacheFile::BuildSourceList(OpProgress *Progress)
 {
-   if (BuildCaches(Progress,WithLock) == false)
-      return false;
-   
-   // The policy engine
+   if (SrcList != NULL)
+      return true;
+
+   SrcList = new pkgSourceList();
+   if (SrcList->ReadMainList() == false)
+      return _error->Error(_("The list of sources could not be read."));
+   return true;
+}
+									/*}}}*/
+// CacheFile::BuildPolicy - Open and build all relevant preferences	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::BuildPolicy(OpProgress *Progress)
+{
+   if (Policy != NULL)
+      return true;
+
    Policy = new pkgPolicy(Cache);
    if (_error->PendingError() == true)
       return false;
 
    if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false)
       return false;
-   
-   // Create the dependency cache
+
+   return true;
+}
+									/*}}}*/
+// CacheFile::BuildDepCache - Open and build the dependency cache	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::BuildDepCache(OpProgress *Progress)
+{
+   if (DCache != NULL)
+      return true;
+
    DCache = new pkgDepCache(Cache,Policy);
    if (_error->PendingError() == true)
       return false;
-   
-   DCache->Init(&Progress);
-   Progress.Done();
+
+   DCache->Init(Progress);
+   return true;
+}
+									/*}}}*/
+// CacheFile::Open - Open the cache files, creating if necessary	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::Open(OpProgress *Progress, bool WithLock)
+{
+   if (BuildCaches(Progress,WithLock) == false)
+      return false;
+
+   if (BuildPolicy(Progress) == false)
+      return false;
+
+   if (BuildDepCache(Progress) == false)
+      return false;
+
+   if (Progress != NULL)
+      Progress->Done();
    if (_error->PendingError() == true)
       return false;
    
@@ -117,12 +171,14 @@ void pkgCacheFile::Close()
    delete DCache;
    delete Policy;
    delete Cache;
+   delete SrcList;
    delete Map;
    _system->UnLock(true);
 
-   Map = 0;
-   DCache = 0;
-   Policy = 0;
-   Cache = 0;
+   Map = NULL;
+   DCache = NULL;
+   Policy = NULL;
+   Cache = NULL;
+   SrcList = NULL;
 }
 									/*}}}*/
diff --git a/apt-pkg/cachefile.h b/apt-pkg/cachefile.h
index 3b057951c..09d3ec267 100644
--- a/apt-pkg/cachefile.h
+++ b/apt-pkg/cachefile.h
@@ -20,9 +20,9 @@
 
 #include <apt-pkg/depcache.h>
 #include <apt-pkg/acquire.h>
+#include <apt-pkg/policy.h>
 #include <apt-pkg/sourcelist.h>
 
-class pkgPolicy;
 class pkgCacheFile
 {
    protected:
@@ -30,27 +30,47 @@ class pkgCacheFile
    MMap *Map;
    pkgCache *Cache;
    pkgDepCache *DCache;
-   
-   public:
+   pkgSourceList *SrcList;
 
+   public:
    pkgPolicy *Policy;
-      
+
    // We look pretty much exactly like a pointer to a dep cache
    inline operator pkgCache &() {return *Cache;};
    inline operator pkgCache *() {return Cache;};
    inline operator pkgDepCache &() {return *DCache;};
    inline operator pkgDepCache *() {return DCache;};
+   inline operator pkgPolicy &() {return *Policy;};
+   inline operator pkgPolicy *() {return Policy;};
+   inline operator pkgSourceList &() {return *SrcList;};
+   inline operator pkgSourceList *() {return SrcList;};
    inline pkgDepCache *operator ->() {return DCache;};
    inline pkgDepCache &operator *() {return *DCache;};
    inline pkgDepCache::StateCache &operator [](pkgCache::PkgIterator const &I) {return (*DCache)[I];};
    inline unsigned char &operator [](pkgCache::DepIterator const &I) {return (*DCache)[I];};
 
-   bool BuildCaches(OpProgress &Progress,bool WithLock = true);
-   bool Open(OpProgress &Progress,bool WithLock = true);
+   bool BuildCaches(OpProgress *Progress = NULL,bool WithLock = true);
+   __deprecated bool BuildCaches(OpProgress &Progress,bool const &WithLock = true) { return BuildCaches(&Progress, WithLock); };
+   bool BuildSourceList(OpProgress *Progress = NULL);
+   bool BuildPolicy(OpProgress *Progress = NULL);
+   bool BuildDepCache(OpProgress *Progress = NULL);
+   bool Open(OpProgress *Progress = NULL, bool WithLock = true);
+   inline bool ReadOnlyOpen(OpProgress *Progress = NULL) { return Open(Progress, false); };
+   __deprecated bool Open(OpProgress &Progress,bool const &WithLock = true) { return Open(&Progress, WithLock); };
    void Close();
-   
+
+   inline pkgCache* GetPkgCache() { BuildCaches(NULL, false); return Cache; };
+   inline pkgDepCache* GetDepCache() { BuildDepCache(); return DCache; };
+   inline pkgPolicy* GetPolicy() { BuildPolicy(); return Policy; };
+   inline pkgSourceList* GetSourceList() { BuildSourceList(); return SrcList; };
+
+   inline bool IsPkgCacheBuilt() const { return (Cache != NULL); };
+   inline bool IsDepCacheBuilt() const { return (DCache != NULL); };
+   inline bool IsPolicyBuilt() const { return (Policy != NULL); };
+   inline bool IsSrcListBuilt() const { return (SrcList != NULL); };
+
    pkgCacheFile();
-   ~pkgCacheFile();
+   virtual ~pkgCacheFile();
 };
 
 #endif
diff --git a/apt-pkg/cachefilter.cc b/apt-pkg/cachefilter.cc
new file mode 100644
index 000000000..8f0725ea3
--- /dev/null
+++ b/apt-pkg/cachefilter.cc
@@ -0,0 +1,54 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/** \file cachefilter.h
+    Collection of functor classes */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <apt-pkg/cachefilter.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/pkgcache.h>
+
+#include <apti18n.h>
+
+#include <string>
+
+#include <regex.h>
+									/*}}}*/
+namespace APT {
+namespace CacheFilter {
+PackageNameMatchesRegEx::PackageNameMatchesRegEx(std::string const &Pattern) {/*{{{*/
+	pattern = new regex_t;
+	int const Res = regcomp(pattern, Pattern.c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB);
+	if (Res == 0)
+		return;
+
+	delete pattern;
+	pattern = NULL;
+	char Error[300];
+	regerror(Res, pattern, Error, sizeof(Error));
+	_error->Error(_("Regex compilation error - %s"), Error);
+}
+									/*}}}*/
+bool PackageNameMatchesRegEx::operator() (pkgCache::PkgIterator const &Pkg) {/*{{{*/
+	if (unlikely(pattern == NULL))
+		return false;
+	else
+		return regexec(pattern, Pkg.Name(), 0, 0, 0) == 0;
+}
+									/*}}}*/
+bool PackageNameMatchesRegEx::operator() (pkgCache::GrpIterator const &Grp) {/*{{{*/
+	if (unlikely(pattern == NULL))
+		return false;
+	else
+		return regexec(pattern, Grp.Name(), 0, 0, 0) == 0;
+}
+									/*}}}*/
+PackageNameMatchesRegEx::~PackageNameMatchesRegEx() {			/*{{{*/
+	if (pattern == NULL)
+		return;
+	regfree(pattern);
+	delete pattern;
+}
+									/*}}}*/
+}
+}
diff --git a/apt-pkg/cachefilter.h b/apt-pkg/cachefilter.h
new file mode 100644
index 000000000..e7ab1723f
--- /dev/null
+++ b/apt-pkg/cachefilter.h
@@ -0,0 +1,29 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/** \file cachefilter.h
+   Collection of functor classes */
+									/*}}}*/
+#ifndef APT_CACHEFILTER_H
+#define APT_CACHEFILTER_H
+// Include Files							/*{{{*/
+#include <apt-pkg/pkgcache.h>
+
+#include <string>
+
+#include <regex.h>
+									/*}}}*/
+namespace APT {
+namespace CacheFilter {
+// PackageNameMatchesRegEx						/*{{{*/
+class PackageNameMatchesRegEx {
+	regex_t* pattern;
+public:
+	PackageNameMatchesRegEx(std::string const &Pattern);
+	bool operator() (pkgCache::PkgIterator const &Pkg);
+	bool operator() (pkgCache::GrpIterator const &Grp);
+	~PackageNameMatchesRegEx();
+};
+									/*}}}*/
+}
+}
+#endif
diff --git a/apt-pkg/cacheiterators.h b/apt-pkg/cacheiterators.h
index 28466cd40..0be9368bd 100644
--- a/apt-pkg/cacheiterators.h
+++ b/apt-pkg/cacheiterators.h
@@ -1,6 +1,5 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: cacheiterators.h,v 1.18.2.1 2004/05/08 22:44:27 mdz Exp $
 /* ######################################################################
    
    Cache Iterators - Iterators for navigating the cache structure
@@ -30,417 +29,410 @@
 									/*}}}*/
 #ifndef PKGLIB_CACHEITERATORS_H
 #define PKGLIB_CACHEITERATORS_H
+#include<iterator>
+
+#include<string.h>
+// abstract Iterator template						/*{{{*/
+/* This template provides the very basic iterator methods we
+   need to have for doing some walk-over-the-cache magic */
+template<typename Str, typename Itr> class pkgCache::Iterator :
+			public std::iterator<std::forward_iterator_tag, Str> {
+	protected:
+	Str *S;
+	pkgCache *Owner;
+
+	/** \brief Returns the Pointer for this struct in the owner
+	 *  The implementation of this method should be pretty short
+	 *  as it will only return the Pointer into the mmap stored
+	 *  in the owner but the name of this pointer is different for
+	 *  each stucture and we want to abstract here at least for the
+	 *  basic methods from the actual structure.
+	 *  \return Pointer to the first structure of this type
+	 */
+	virtual Str* OwnerPointer() const = 0;
+
+	public:
+	// Iteration
+	virtual void operator ++(int) = 0;
+	virtual void operator ++() = 0; // Should be {operator ++(0);};
+	inline bool end() const {return Owner == 0 || S == OwnerPointer();};
+
+	// Comparison
+	inline bool operator ==(const Itr &B) const {return S == B.S;};
+	inline bool operator !=(const Itr &B) const {return S != B.S;};
+
+	// Accessors
+	inline Str *operator ->() {return S;};
+	inline Str const *operator ->() const {return S;};
+	inline operator Str *() {return S == OwnerPointer() ? 0 : S;};
+	inline operator Str const *() const {return S == OwnerPointer() ? 0 : S;};
+	inline Str &operator *() {return *S;};
+	inline Str const &operator *() const {return *S;};
+	inline pkgCache *Cache() const {return Owner;};
+
+	// Mixed stuff
+	inline void operator =(const Itr &B) {S = B.S; Owner = B.Owner;};
+	inline bool IsGood() const { return S && Owner && ! end();};
+	inline unsigned long Index() const {return S - OwnerPointer();};
+
+	void ReMap(void const * const oldMap, void const * const newMap) {
+		if (Owner == 0 || S == 0)
+			return;
+		S += (Str*)(newMap) - (Str*)(oldMap);
+	}
+
+	// Constructors - look out for the variable assigning
+	inline Iterator() : S(0), Owner(0) {};
+	inline Iterator(pkgCache &Owner,Str *T = 0) : S(T), Owner(&Owner) {};
+};
+									/*}}}*/
+// Group Iterator							/*{{{*/
+/* Packages with the same name are collected in a Group so someone only
+   interest in package names can iterate easily over the names, so the
+   different architectures can be treated as of the "same" package
+   (apt internally treat them as totally different packages) */
+class pkgCache::GrpIterator: public Iterator<Group, GrpIterator> {
+	long HashIndex;
+
+	protected:
+	inline Group* OwnerPointer() const {
+		return Owner->GrpP;
+	};
+
+	public:
+	// This constructor is the 'begin' constructor, never use it.
+	inline GrpIterator(pkgCache &Owner) : Iterator<Group, GrpIterator>(Owner), HashIndex(-1) {
+		S = OwnerPointer();
+		operator ++(0);
+	};
+
+	virtual void operator ++(int);
+	virtual void operator ++() {operator ++(0);};
+
+	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;};
+	inline PkgIterator PackageList() const;
+	PkgIterator FindPkg(string Arch = "any") const;
+	/** \brief find the package with the "best" architecture
+
+	    The best architecture is either the "native" or the first
+	    in the list of Architectures which is not an end-Pointer
+
+	    \param PreferNonVirtual tries to respond with a non-virtual package
+		   and only if this fails returns the best virtual package */
+	PkgIterator FindPreferredPkg(bool const &PreferNonVirtual = true) const;
+	PkgIterator NextPkg(PkgIterator const &Pkg) const;
+
+	// Constructors
+	inline GrpIterator(pkgCache &Owner, Group *Trg) : Iterator<Group, GrpIterator>(Owner, Trg), HashIndex(0) {
+		if (S == 0)
+			S = OwnerPointer();
+	};
+	inline GrpIterator() : Iterator<Group, GrpIterator>(), HashIndex(0) {};
 
-
+};
+									/*}}}*/
 // Package Iterator							/*{{{*/
-class pkgCache::PkgIterator
-{
-   friend class pkgCache;
-   Package *Pkg;
-   pkgCache *Owner;
-   long HashIndex;
-
-   protected:
-   
-   // This constructor is the 'begin' constructor, never use it.
-   inline PkgIterator(pkgCache &Owner) : Owner(&Owner), HashIndex(-1)
-   {
-      Pkg = Owner.PkgP;
-      operator ++(0);
-   };
-   
-   public:
-
-   enum OkState {NeedsNothing,NeedsUnpack,NeedsConfigure};
-      
-   // Iteration
-   void operator ++(int);
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || Pkg == Owner->PkgP?true:false;};
-
-   // Comparison
-   inline bool operator ==(const PkgIterator &B) const {return Pkg == B.Pkg;};
-   inline bool operator !=(const PkgIterator &B) const {return Pkg != B.Pkg;};
-			   
-   // Accessors
-   inline Package *operator ->() {return Pkg;};
-   inline Package const *operator ->() const {return Pkg;};
-   inline Package const &operator *() const {return *Pkg;};
-   inline operator Package *() {return Pkg == Owner->PkgP?0:Pkg;};
-   inline operator Package const *() const {return Pkg == Owner->PkgP?0:Pkg;};
-   inline pkgCache *Cache() {return Owner;};
-   
-   inline const char *Name() const {return Pkg->Name == 0?0:Owner->StrP + Pkg->Name;};
-   inline const char *Section() const {return Pkg->Section == 0?0:Owner->StrP + Pkg->Section;};
-   inline bool Purge() const {return Pkg->CurrentState == pkgCache::State::Purge ||
-	 (Pkg->CurrentVer == 0 && Pkg->CurrentState == pkgCache::State::NotInstalled);};
-   inline VerIterator VersionList() const;
-   inline VerIterator CurrentVer() const;
-   inline DepIterator RevDependsList() const;
-   inline PrvIterator ProvidesList() const;
-   inline unsigned long Index() const {return Pkg - Owner->PkgP;};
-   OkState State() const;
-
-   //Nice printable representation
-   friend std::ostream& operator<<(std::ostream& out, pkgCache::PkgIterator Pkg);
-
-   const char *CandVersion() const;
-   const char *CurVersion() const;
-
-   // Constructors
-   inline PkgIterator(pkgCache &Owner,Package *Trg) : Pkg(Trg), Owner(&Owner),
-          HashIndex(0) 
-   { 
-      if (Pkg == 0)
-	 Pkg = Owner.PkgP;
-   };
-   inline PkgIterator() : Pkg(0), Owner(0), HashIndex(0) {};
+class pkgCache::PkgIterator: public Iterator<Package, PkgIterator> {
+	long HashIndex;
+
+	protected:
+	inline Package* OwnerPointer() const {
+		return Owner->PkgP;
+	};
+
+	public:
+	// This constructor is the 'begin' constructor, never use it.
+	inline PkgIterator(pkgCache &Owner) : Iterator<Package, PkgIterator>(Owner), HashIndex(-1) {
+		S = OwnerPointer();
+		operator ++(0);
+	};
+
+	virtual void operator ++(int);
+	virtual void operator ++() {operator ++(0);};
+
+	enum OkState {NeedsNothing,NeedsUnpack,NeedsConfigure};
+
+	// Accessors
+	inline const char *Name() const {return S->Name == 0?0:Owner->StrP + S->Name;};
+	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
+	inline bool Purge() const {return S->CurrentState == pkgCache::State::Purge ||
+		(S->CurrentVer == 0 && S->CurrentState == pkgCache::State::NotInstalled);};
+	inline const char *Arch() const {return S->Arch == 0?0:Owner->StrP + S->Arch;};
+	inline GrpIterator Group() const { return GrpIterator(*Owner, Owner->GrpP + S->Group);};
+
+	inline VerIterator VersionList() const;
+	inline VerIterator CurrentVer() const;
+	inline DepIterator RevDependsList() const;
+	inline PrvIterator ProvidesList() const;
+	OkState State() const;
+	const char *CandVersion() const;
+	const char *CurVersion() const;
+
+	//Nice printable representation
+	friend std::ostream& operator <<(std::ostream& out, PkgIterator i);
+	std::string FullName(bool const &Pretty = false) const;
+
+	// Constructors
+	inline PkgIterator(pkgCache &Owner,Package *Trg) : Iterator<Package, PkgIterator>(Owner, Trg), HashIndex(0) {
+		if (S == 0)
+			S = OwnerPointer();
+	};
+	inline PkgIterator() : Iterator<Package, PkgIterator>(), HashIndex(0) {};
 };
 									/*}}}*/
 // Version Iterator							/*{{{*/
-class pkgCache::VerIterator
-{
-   Version *Ver;
-   pkgCache *Owner;
-
-   void _dummy();
-   
-   public:
-
-   // Iteration
-   void operator ++(int) {if (Ver != Owner->VerP) Ver = Owner->VerP + Ver->NextVer;};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || (Ver == Owner->VerP?true:false);};
-   inline void operator =(const VerIterator &B) {Ver = B.Ver; Owner = B.Owner;};
-   
-   // Comparison
-   inline bool operator ==(const VerIterator &B) const {return Ver == B.Ver;};
-   inline bool operator !=(const VerIterator &B) const {return Ver != B.Ver;};
-   int CompareVer(const VerIterator &B) const;
-
-   // Testing
-   inline bool IsGood() const { return Ver && Owner && ! end();};
-
-   // Accessors
-   inline Version *operator ->() {return Ver;};
-   inline Version const *operator ->() const {return Ver;};
-   inline Version &operator *() {return *Ver;};
-   inline Version const &operator *() const {return *Ver;};
-   inline operator Version *() {return Ver == Owner->VerP?0:Ver;};
-   inline operator Version const *() const {return Ver == Owner->VerP?0:Ver;};
-   inline pkgCache *Cache() {return Owner;};
-      
-   inline const char *VerStr() const {return Ver->VerStr == 0?0:Owner->StrP + Ver->VerStr;};
-   inline const char *Section() const {return Ver->Section == 0?0:Owner->StrP + Ver->Section;};
-   inline const char *Arch() const {return Ver->Arch == 0?0:Owner->StrP + Ver->Arch;};
-   inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Ver->ParentPkg);};
-   inline DescIterator DescriptionList() const;
-   DescIterator TranslatedDescription() const;
-   inline DepIterator DependsList() const;
-   inline PrvIterator ProvidesList() const;
-   inline VerFileIterator FileList() const;
-   inline unsigned long Index() const {return Ver - Owner->VerP;};
-   bool Downloadable() const;
-   inline const char *PriorityType() {return Owner->Priority(Ver->Priority);};
-   string RelStr();
-   
-   bool Automatic() const;
-   VerFileIterator NewestFile() const;
-
-   inline VerIterator() : Ver(0), Owner(0) {};   
-   inline VerIterator(pkgCache &Owner,Version *Trg = 0) : Ver(Trg), 
-              Owner(&Owner) 
-   { 
-      if (Ver == 0)
-	 Ver = Owner.VerP;
-   };
+class pkgCache::VerIterator : public Iterator<Version, VerIterator> {
+	protected:
+	inline Version* OwnerPointer() const {
+		return Owner->VerP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->VerP) S = Owner->VerP + S->NextVer;};
+	inline void operator ++() {operator ++(0);};
+
+	// Comparison
+	int CompareVer(const VerIterator &B) const;
+	/** \brief compares two version and returns if they are similar
+
+	    This method should be used to identify if two pseudo versions are
+	    refering to the same "real" version */
+	inline bool SimilarVer(const VerIterator &B) const {
+		return (B.end() == false && S->Hash == B->Hash && strcmp(VerStr(), B.VerStr()) == 0);
+	};
+
+	// Accessors
+	inline const char *VerStr() const {return S->VerStr == 0?0:Owner->StrP + S->VerStr;};
+	inline const char *Section() const {return S->Section == 0?0:Owner->StrP + S->Section;};
+	inline const char *Arch() const {
+		if(S->MultiArch == pkgCache::Version::All)
+			return "all";
+		return S->ParentPkg == 0?0:Owner->StrP + ParentPkg()->Arch;
+	};
+	inline const char *Arch(bool const pseudo) const {
+		if(pseudo == false)
+			return Arch();
+		return S->ParentPkg == 0?0:Owner->StrP + ParentPkg()->Arch;
+	};
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);};
+
+	inline DescIterator DescriptionList() const;
+	DescIterator TranslatedDescription() const;
+	inline DepIterator DependsList() const;
+	inline PrvIterator ProvidesList() const;
+	inline VerFileIterator FileList() const;
+	bool Downloadable() const;
+	inline const char *PriorityType() const {return Owner->Priority(S->Priority);};
+	string RelStr() const;
+
+	bool Automatic() const;
+	bool Pseudo() const;
+	VerFileIterator NewestFile() const;
+
+	inline VerIterator(pkgCache &Owner,Version *Trg = 0) : Iterator<Version, VerIterator>(Owner, Trg) {
+		if (S == 0)
+			S = OwnerPointer();
+	};
+	inline VerIterator() : Iterator<Version, VerIterator>() {};
 };
 									/*}}}*/
 // Description Iterator							/*{{{*/
-class pkgCache::DescIterator
-{
-   Description *Desc;
-   pkgCache *Owner;
-   
-   void _dummy();
-   
-   public:
-
-   // Iteration
-   void operator ++(int) {if (Desc != Owner->DescP) Desc = Owner->DescP + Desc->NextDesc;};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || Desc == Owner->DescP?true:false;};
-   inline void operator =(const DescIterator &B) {Desc = B.Desc; Owner = B.Owner;};
-   
-   // Comparison
-   inline bool operator ==(const DescIterator &B) const {return Desc == B.Desc;};
-   inline bool operator !=(const DescIterator &B) const {return Desc != B.Desc;};
-   int CompareDesc(const DescIterator &B) const;
-   
-   // Accessors
-   inline Description *operator ->() {return Desc;};
-   inline Description const *operator ->() const {return Desc;};
-   inline Description &operator *() {return *Desc;};
-   inline Description const &operator *() const {return *Desc;};
-   inline operator Description *() {return Desc == Owner->DescP?0:Desc;};
-   inline operator Description const *() const {return Desc == Owner->DescP?0:Desc;};
-   inline pkgCache *Cache() {return Owner;};
-      
-   inline const char *LanguageCode() const {return Owner->StrP + Desc->language_code;};
-   inline const char *md5() const {return Owner->StrP + Desc->md5sum;};
-   inline DescFileIterator FileList() const;
-   inline unsigned long Index() const {return Desc - Owner->DescP;};
-
-   inline DescIterator() : Desc(0), Owner(0) {};   
-   inline DescIterator(pkgCache &Owner,Description *Trg = 0) : Desc(Trg), 
-              Owner(&Owner) 
-   { 
-      if (Desc == 0)
-	 Desc = Owner.DescP;
-   };
+class pkgCache::DescIterator : public Iterator<Description, DescIterator> {
+	protected:
+	inline Description* OwnerPointer() const {
+		return Owner->DescP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->DescP) S = Owner->DescP + S->NextDesc;};
+	inline void operator ++() {operator ++(0);};
+
+	// Comparison
+	int CompareDesc(const DescIterator &B) const;
+
+	// Accessors
+	inline const char *LanguageCode() const {return Owner->StrP + S->language_code;};
+	inline const char *md5() const {return Owner->StrP + S->md5sum;};
+	inline DescFileIterator FileList() const;
+
+	inline DescIterator() : Iterator<Description, DescIterator>() {};
+	inline DescIterator(pkgCache &Owner,Description *Trg = 0) : Iterator<Description, DescIterator>(Owner, Trg) {
+		if (S == 0)
+			S = Owner.DescP;
+	};
 };
 									/*}}}*/
 // Dependency iterator							/*{{{*/
-class pkgCache::DepIterator
-{
-   Dependency *Dep;
-   enum {DepVer, DepRev} Type;
-   pkgCache *Owner;
-   
-   void _dummy();
-   
-   public:
-
-   // Iteration
-   void operator ++(int) {if (Dep != Owner->DepP) Dep = Owner->DepP +
-	(Type == DepVer?Dep->NextDepends:Dep->NextRevDepends);};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || Dep == Owner->DepP?true:false;};
-   
-   // Comparison
-   inline bool operator ==(const DepIterator &B) const {return Dep == B.Dep;};
-   inline bool operator !=(const DepIterator &B) const {return Dep != B.Dep;};
-
-   // Accessors
-   inline Dependency *operator ->() {return Dep;};
-   inline Dependency const *operator ->() const {return Dep;};
-   inline Dependency &operator *() {return *Dep;};
-   inline Dependency const &operator *() const {return *Dep;};
-   inline operator Dependency *() {return Dep == Owner->DepP?0:Dep;};
-   inline operator Dependency const *() const {return Dep == Owner->DepP?0:Dep;};
-   inline pkgCache *Cache() {return Owner;};
-   
-   inline const char *TargetVer() const {return Dep->Version == 0?0:Owner->StrP + Dep->Version;};
-   inline PkgIterator TargetPkg() {return PkgIterator(*Owner,Owner->PkgP + Dep->Package);};
-   inline PkgIterator SmartTargetPkg() {PkgIterator R(*Owner,0);SmartTargetPkg(R);return R;};
-   inline VerIterator ParentVer() {return VerIterator(*Owner,Owner->VerP + Dep->ParentVer);};
-   inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[Dep->ParentVer].ParentPkg);};
-   inline bool Reverse() {return Type == DepRev;};
-   inline unsigned long Index() const {return Dep - Owner->DepP;};
-   bool IsCritical();
-   void GlobOr(DepIterator &Start,DepIterator &End);
-   Version **AllTargets();   
-   bool SmartTargetPkg(PkgIterator &Result);
-   inline const char *CompType() {return Owner->CompType(Dep->CompareOp);};
-   inline const char *DepType() {return Owner->DepType(Dep->Type);};
-   
-   inline DepIterator(pkgCache &Owner,Dependency *Trg,Version * = 0) :
-          Dep(Trg), Type(DepVer), Owner(&Owner) 
-   {
-      if (Dep == 0)
-	 Dep = Owner.DepP;
-   };
-   inline DepIterator(pkgCache &Owner,Dependency *Trg,Package *) :
-          Dep(Trg), Type(DepRev), Owner(&Owner)
-   {
-      if (Dep == 0)
-	 Dep = Owner.DepP;
-   };
-   inline DepIterator() : Dep(0), Type(DepVer), Owner(0) {};
+class pkgCache::DepIterator : public Iterator<Dependency, DepIterator> {
+	enum {DepVer, DepRev} Type;
+
+	protected:
+	inline Dependency* OwnerPointer() const {
+		return Owner->DepP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->DepP) S = Owner->DepP +
+		(Type == DepVer ? S->NextDepends : S->NextRevDepends);};
+	inline void operator ++() {operator ++(0);};
+
+	// Accessors
+	inline const char *TargetVer() const {return S->Version == 0?0:Owner->StrP + S->Version;};
+	inline PkgIterator TargetPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->Package);};
+	inline PkgIterator SmartTargetPkg() const {PkgIterator R(*Owner,0);SmartTargetPkg(R);return R;};
+	inline VerIterator ParentVer() const {return VerIterator(*Owner,Owner->VerP + S->ParentVer);};
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->ParentVer].ParentPkg);};
+	inline bool Reverse() const {return Type == DepRev;};
+	bool IsCritical() const;
+	void GlobOr(DepIterator &Start,DepIterator &End);
+	Version **AllTargets() const;
+	bool SmartTargetPkg(PkgIterator &Result) const;
+	inline const char *CompType() const {return Owner->CompType(S->CompareOp);};
+	inline const char *DepType() const {return Owner->DepType(S->Type);};
+
+	inline DepIterator(pkgCache &Owner, Dependency *Trg, Version* = 0) :
+		Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepVer) {
+		if (S == 0)
+			S = Owner.DepP;
+	};
+	inline DepIterator(pkgCache &Owner, Dependency *Trg, Package*) :
+		Iterator<Dependency, DepIterator>(Owner, Trg), Type(DepRev) {
+		if (S == 0)
+			S = Owner.DepP;
+	};
+	inline DepIterator() : Iterator<Dependency, DepIterator>(), Type(DepVer) {};
 };
 									/*}}}*/
 // Provides iterator							/*{{{*/
-class pkgCache::PrvIterator
-{
-   Provides *Prv;
-   enum {PrvVer, PrvPkg} Type;
-   pkgCache *Owner;
-   
-   void _dummy();
-   
-   public:
-
-   // Iteration
-   void operator ++(int) {if (Prv != Owner->ProvideP) Prv = Owner->ProvideP +
-	(Type == PrvVer?Prv->NextPkgProv:Prv->NextProvides);};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || Prv == Owner->ProvideP?true:false;};
-   
-   // Comparison
-   inline bool operator ==(const PrvIterator &B) const {return Prv == B.Prv;};
-   inline bool operator !=(const PrvIterator &B) const {return Prv != B.Prv;};
-
-   // Accessors
-   inline Provides *operator ->() {return Prv;};
-   inline Provides const *operator ->() const {return Prv;};
-   inline Provides &operator *() {return *Prv;};
-   inline Provides const &operator *() const {return *Prv;};
-   inline operator Provides *() {return Prv == Owner->ProvideP?0:Prv;};
-   inline operator Provides const *() const {return Prv == Owner->ProvideP?0:Prv;};
-   inline pkgCache *Cache() {return Owner;};
-
-   inline const char *Name() const {return Owner->StrP + Owner->PkgP[Prv->ParentPkg].Name;};
-   inline const char *ProvideVersion() const {return Prv->ProvideVersion == 0?0:Owner->StrP + Prv->ProvideVersion;};
-   inline PkgIterator ParentPkg() {return PkgIterator(*Owner,Owner->PkgP + Prv->ParentPkg);};
-   inline VerIterator OwnerVer() {return VerIterator(*Owner,Owner->VerP + Prv->Version);};
-   inline PkgIterator OwnerPkg() {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[Prv->Version].ParentPkg);};
-   inline unsigned long Index() const {return Prv - Owner->ProvideP;};
-
-   inline PrvIterator() : Prv(0), Type(PrvVer), Owner(0)  {};
-
-   inline PrvIterator(pkgCache &Owner,Provides *Trg,Version *) :
-          Prv(Trg), Type(PrvVer), Owner(&Owner) 
-   {
-      if (Prv == 0)
-	 Prv = Owner.ProvideP;
-   };
-   inline PrvIterator(pkgCache &Owner,Provides *Trg,Package *) : 
-          Prv(Trg), Type(PrvPkg), Owner(&Owner)
-   {
-      if (Prv == 0)
-	 Prv = Owner.ProvideP;
-   };
+class pkgCache::PrvIterator : public Iterator<Provides, PrvIterator> {
+	enum {PrvVer, PrvPkg} Type;
+
+	protected:
+	inline Provides* OwnerPointer() const {
+		return Owner->ProvideP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->ProvideP) S = Owner->ProvideP +
+		(Type == PrvVer?S->NextPkgProv:S->NextProvides);};
+	inline void operator ++() {operator ++(0);};
+
+	// Accessors
+	inline const char *Name() const {return Owner->StrP + Owner->PkgP[S->ParentPkg].Name;};
+	inline const char *ProvideVersion() const {return S->ProvideVersion == 0?0:Owner->StrP + S->ProvideVersion;};
+	inline PkgIterator ParentPkg() const {return PkgIterator(*Owner,Owner->PkgP + S->ParentPkg);};
+	inline VerIterator OwnerVer() const {return VerIterator(*Owner,Owner->VerP + S->Version);};
+	inline PkgIterator OwnerPkg() const {return PkgIterator(*Owner,Owner->PkgP + Owner->VerP[S->Version].ParentPkg);};
+
+	inline PrvIterator() : Iterator<Provides, PrvIterator>(), Type(PrvVer) {};
+
+	inline PrvIterator(pkgCache &Owner, Provides *Trg, Version*) :
+		Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvVer) {
+		if (S == 0)
+			S = Owner.ProvideP;
+	};
+	inline PrvIterator(pkgCache &Owner, Provides *Trg, Package*) :
+		Iterator<Provides, PrvIterator>(Owner, Trg), Type(PrvPkg) {
+		if (S == 0)
+			S = Owner.ProvideP;
+	};
 };
 									/*}}}*/
 // Package file								/*{{{*/
-class pkgCache::PkgFileIterator
-{
-   pkgCache *Owner;
-   PackageFile *File;
-
-   public:
-
-   // Iteration
-   void operator ++(int) {if (File!= Owner->PkgFileP) File = Owner->PkgFileP + File->NextFile;};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || File == Owner->PkgFileP?true:false;};
-
-   // Comparison
-   inline bool operator ==(const PkgFileIterator &B) const {return File == B.File;};
-   inline bool operator !=(const PkgFileIterator &B) const {return File != B.File;};
-			   
-   // Accessors
-   inline PackageFile *operator ->() {return File;};
-   inline PackageFile const *operator ->() const {return File;};
-   inline PackageFile const &operator *() const {return *File;};
-   inline operator PackageFile *() {return File == Owner->PkgFileP?0:File;};
-   inline operator PackageFile const *() const {return File == Owner->PkgFileP?0:File;};
-   inline pkgCache *Cache() {return Owner;};
-
-   inline const char *FileName() const {return File->FileName == 0?0:Owner->StrP + File->FileName;};
-   inline const char *Archive() const {return File->Archive == 0?0:Owner->StrP + File->Archive;};
-   inline const char *Component() const {return File->Component == 0?0:Owner->StrP + File->Component;};
-   inline const char *Version() const {return File->Version == 0?0:Owner->StrP + File->Version;};
-   inline const char *Origin() const {return File->Origin == 0?0:Owner->StrP + File->Origin;};
-   inline const char *Codename() const {return File->Codename ==0?0:Owner->StrP + File->Codename;};
-   inline const char *Label() const {return File->Label == 0?0:Owner->StrP + File->Label;};
-   inline const char *Site() const {return File->Site == 0?0:Owner->StrP + File->Site;};
-   inline const char *Architecture() const {return File->Architecture == 0?0:Owner->StrP + File->Architecture;};
-   inline const char *IndexType() const {return File->IndexType == 0?0:Owner->StrP + File->IndexType;};
-
-   inline unsigned long Index() const {return File - Owner->PkgFileP;};
-
-   bool IsOk();
-   string RelStr();
-   
-   // Constructors
-   inline PkgFileIterator() : Owner(0), File(0) {};
-   inline PkgFileIterator(pkgCache &Owner) : Owner(&Owner), File(Owner.PkgFileP) {};
-   inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Owner(&Owner), File(Trg) {};
+class pkgCache::PkgFileIterator : public Iterator<PackageFile, PkgFileIterator> {
+	protected:
+	inline PackageFile* OwnerPointer() const {
+		return Owner->PkgFileP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->PkgFileP) S = Owner->PkgFileP + S->NextFile;};
+	inline void operator ++() {operator ++(0);};
+
+	// Accessors
+	inline const char *FileName() const {return S->FileName == 0?0:Owner->StrP + S->FileName;};
+	inline const char *Archive() const {return S->Archive == 0?0:Owner->StrP + S->Archive;};
+	inline const char *Component() const {return S->Component == 0?0:Owner->StrP + S->Component;};
+	inline const char *Version() const {return S->Version == 0?0:Owner->StrP + S->Version;};
+	inline const char *Origin() const {return S->Origin == 0?0:Owner->StrP + S->Origin;};
+	inline const char *Codename() const {return S->Codename ==0?0:Owner->StrP + S->Codename;};
+	inline const char *Label() const {return S->Label == 0?0:Owner->StrP + S->Label;};
+	inline const char *Site() const {return S->Site == 0?0:Owner->StrP + S->Site;};
+	inline const char *Architecture() const {return S->Architecture == 0?0:Owner->StrP + S->Architecture;};
+	inline const char *IndexType() const {return S->IndexType == 0?0:Owner->StrP + S->IndexType;};
+
+	bool IsOk();
+	string RelStr();
+
+	// Constructors
+	inline PkgFileIterator() : Iterator<PackageFile, PkgFileIterator>() {};
+	inline PkgFileIterator(pkgCache &Owner) : Iterator<PackageFile, PkgFileIterator>(Owner, Owner.PkgFileP) {};
+	inline PkgFileIterator(pkgCache &Owner,PackageFile *Trg) : Iterator<PackageFile, PkgFileIterator>(Owner, Trg) {};
 };
 									/*}}}*/
 // Version File								/*{{{*/
-class pkgCache::VerFileIterator
-{
-   pkgCache *Owner;
-   VerFile *FileP;
-
-   public:
-
-   // Iteration
-   void operator ++(int) {if (FileP != Owner->VerFileP) FileP = Owner->VerFileP + FileP->NextFile;};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 || FileP == Owner->VerFileP?true:false;};
-
-   // Comparison
-   inline bool operator ==(const VerFileIterator &B) const {return FileP == B.FileP;};
-   inline bool operator !=(const VerFileIterator &B) const {return FileP != B.FileP;};
-			   
-   // Accessors
-   inline VerFile *operator ->() {return FileP;};
-   inline VerFile const *operator ->() const {return FileP;};
-   inline VerFile const &operator *() const {return *FileP;};
-   inline operator VerFile *() {return FileP == Owner->VerFileP?0:FileP;};
-   inline operator VerFile const *() const {return FileP == Owner->VerFileP?0:FileP;};
-   inline pkgCache *Cache() {return Owner;};
-  
-   inline PkgFileIterator File() const {return PkgFileIterator(*Owner,FileP->File + Owner->PkgFileP);};
-   inline unsigned long Index() const {return FileP - Owner->VerFileP;};
-      
-   inline VerFileIterator() : Owner(0), FileP(0) {};
-   inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Owner(&Owner), FileP(Trg) {};
+class pkgCache::VerFileIterator : public pkgCache::Iterator<VerFile, VerFileIterator> {
+	protected:
+	inline VerFile* OwnerPointer() const {
+		return Owner->VerFileP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->VerFileP) S = Owner->VerFileP + S->NextFile;};
+	inline void operator ++() {operator ++(0);};
+
+	// Accessors
+	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);};
+
+	inline VerFileIterator() : Iterator<VerFile, VerFileIterator>() {};
+	inline VerFileIterator(pkgCache &Owner,VerFile *Trg) : Iterator<VerFile, VerFileIterator>(Owner, Trg) {};
 };
 									/*}}}*/
 // Description File							/*{{{*/
-class pkgCache::DescFileIterator
-{
-   pkgCache *Owner;
-   DescFile *FileP;
-
-   public:
-
-   // Iteration
-   void operator ++(int) {if (FileP != Owner->DescFileP) FileP = Owner->DescFileP + FileP->NextFile;};
-   inline void operator ++() {operator ++(0);};
-   inline bool end() const {return Owner == 0 ||  FileP == Owner->DescFileP?true:false;};
-
-   // Comparison
-   inline bool operator ==(const DescFileIterator &B) const {return FileP == B.FileP;};
-   inline bool operator !=(const DescFileIterator &B) const {return FileP != B.FileP;};
-			   
-   // Accessors
-   inline DescFile *operator ->() {return FileP;};
-   inline DescFile const *operator ->() const {return FileP;};
-   inline DescFile const &operator *() const {return *FileP;};
-   inline operator DescFile *() {return FileP == Owner->DescFileP?0:FileP;};
-   inline operator DescFile const *() const {return FileP == Owner->DescFileP?0:FileP;};
-   inline pkgCache *Cache() {return Owner;};
-  
-   inline PkgFileIterator File() const {return PkgFileIterator(*Owner,FileP->File + Owner->PkgFileP);};
-   inline unsigned long Index() const {return FileP - Owner->DescFileP;};
-      
-   inline DescFileIterator() : Owner(0), FileP(0) {};
-   inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Owner(&Owner), FileP(Trg) {};
+class pkgCache::DescFileIterator : public Iterator<DescFile, DescFileIterator> {
+	protected:
+	inline DescFile* OwnerPointer() const {
+		return Owner->DescFileP;
+	};
+
+	public:
+	// Iteration
+	void operator ++(int) {if (S != Owner->DescFileP) S = Owner->DescFileP + S->NextFile;};
+	inline void operator ++() {operator ++(0);};
+
+	// Accessors
+	inline PkgFileIterator File() const {return PkgFileIterator(*Owner,S->File + Owner->PkgFileP);};
+
+	inline DescFileIterator() : Iterator<DescFile, DescFileIterator>() {};
+	inline DescFileIterator(pkgCache &Owner,DescFile *Trg) : Iterator<DescFile, DescFileIterator>(Owner, Trg) {};
 };
 									/*}}}*/
 // Inlined Begin functions cant be in the class because of order problems /*{{{*/
+inline pkgCache::PkgIterator pkgCache::GrpIterator::PackageList() const
+       {return PkgIterator(*Owner,Owner->PkgP + S->FirstPackage);};
 inline pkgCache::VerIterator pkgCache::PkgIterator::VersionList() const
-       {return VerIterator(*Owner,Owner->VerP + Pkg->VersionList);};
+       {return VerIterator(*Owner,Owner->VerP + S->VersionList);};
 inline pkgCache::VerIterator pkgCache::PkgIterator::CurrentVer() const
-       {return VerIterator(*Owner,Owner->VerP + Pkg->CurrentVer);};
+       {return VerIterator(*Owner,Owner->VerP + S->CurrentVer);};
 inline pkgCache::DepIterator pkgCache::PkgIterator::RevDependsList() const
-       {return DepIterator(*Owner,Owner->DepP + Pkg->RevDepends,Pkg);};
+       {return DepIterator(*Owner,Owner->DepP + S->RevDepends,S);};
 inline pkgCache::PrvIterator pkgCache::PkgIterator::ProvidesList() const
-       {return PrvIterator(*Owner,Owner->ProvideP + Pkg->ProvidesList,Pkg);};
+       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);};
 inline pkgCache::DescIterator pkgCache::VerIterator::DescriptionList() const
-       {return DescIterator(*Owner,Owner->DescP + Ver->DescriptionList);};
+       {return DescIterator(*Owner,Owner->DescP + S->DescriptionList);};
 inline pkgCache::PrvIterator pkgCache::VerIterator::ProvidesList() const
-       {return PrvIterator(*Owner,Owner->ProvideP + Ver->ProvidesList,Ver);};
+       {return PrvIterator(*Owner,Owner->ProvideP + S->ProvidesList,S);};
 inline pkgCache::DepIterator pkgCache::VerIterator::DependsList() const
-       {return DepIterator(*Owner,Owner->DepP + Ver->DependsList,Ver);};
+       {return DepIterator(*Owner,Owner->DepP + S->DependsList,S);};
 inline pkgCache::VerFileIterator pkgCache::VerIterator::FileList() const
-       {return VerFileIterator(*Owner,Owner->VerFileP + Ver->FileList);};
+       {return VerFileIterator(*Owner,Owner->VerFileP + S->FileList);};
 inline pkgCache::DescFileIterator pkgCache::DescIterator::FileList() const
-       {return DescFileIterator(*Owner,Owner->DescFileP + Desc->FileList);};
+       {return DescFileIterator(*Owner,Owner->DescFileP + S->FileList);};
 									/*}}}*/
 #endif
diff --git a/apt-pkg/cacheset.cc b/apt-pkg/cacheset.cc
new file mode 100644
index 000000000..f17a9e0d5
--- /dev/null
+++ b/apt-pkg/cacheset.cc
@@ -0,0 +1,511 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+
+   Simple wrapper around a std::set to provide a similar interface to
+   a set of cache structures as to the complete set of all structures
+   in the pkgCache. Currently only Package is supported.
+
+   ##################################################################### */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/cachefilter.h>
+#include <apt-pkg/cacheset.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/versionmatch.h>
+
+#include <apti18n.h>
+
+#include <vector>
+
+#include <regex.h>
+									/*}}}*/
+namespace APT {
+// FromTask - Return all packages in the cache from a specific task	/*{{{*/
+PackageSet PackageSet::FromTask(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
+	size_t const archfound = pattern.find_last_of(':');
+	std::string arch = "native";
+	if (archfound != std::string::npos) {
+		arch = pattern.substr(archfound+1);
+		pattern.erase(archfound);
+	}
+
+	if (pattern[pattern.length() -1] != '^')
+		return APT::PackageSet(TASK);
+	pattern.erase(pattern.length()-1);
+
+	if (unlikely(Cache.GetPkgCache() == 0 || Cache.GetDepCache() == 0))
+		return APT::PackageSet(TASK);
+
+	PackageSet pkgset(TASK);
+	// get the records
+	pkgRecords Recs(Cache);
+
+	// build regexp for the task
+	regex_t Pattern;
+	char S[300];
+	snprintf(S, sizeof(S), "^Task:.*[, ]%s([, ]|$)", pattern.c_str());
+	if(regcomp(&Pattern,S, REG_EXTENDED | REG_NOSUB | REG_NEWLINE) != 0) {
+		_error->Error("Failed to compile task regexp");
+		return pkgset;
+	}
+
+	for (pkgCache::GrpIterator Grp = Cache->GrpBegin(); Grp.end() == false; ++Grp) {
+		pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
+		if (Pkg.end() == true)
+			continue;
+		pkgCache::VerIterator ver = Cache[Pkg].CandidateVerIter(Cache);
+		if(ver.end() == true)
+			continue;
+
+		pkgRecords::Parser &parser = Recs.Lookup(ver.FileList());
+		const char *start, *end;
+		parser.GetRec(start,end);
+		unsigned int const length = end - start;
+		char buf[length];
+		strncpy(buf, start, length);
+		buf[length-1] = '\0';
+		if (regexec(&Pattern, buf, 0, 0, 0) != 0)
+			continue;
+
+		pkgset.insert(Pkg);
+	}
+	regfree(&Pattern);
+
+	if (pkgset.empty() == true)
+		return helper.canNotFindTask(Cache, pattern);
+
+	helper.showTaskSelection(pkgset, pattern);
+	return pkgset;
+}
+									/*}}}*/
+// FromRegEx - Return all packages in the cache matching a pattern	/*{{{*/
+PackageSet PackageSet::FromRegEx(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper) {
+	static const char * const isregex = ".?+*|[^$";
+	if (pattern.find_first_of(isregex) == std::string::npos)
+		return PackageSet(REGEX);
+
+	size_t archfound = pattern.find_last_of(':');
+	std::string arch = "native";
+	if (archfound != std::string::npos) {
+		arch = pattern.substr(archfound+1);
+		if (arch.find_first_of(isregex) == std::string::npos)
+			pattern.erase(archfound);
+		else
+			arch = "native";
+	}
+
+	if (unlikely(Cache.GetPkgCache() == 0))
+		return PackageSet(REGEX);
+
+	APT::CacheFilter::PackageNameMatchesRegEx regexfilter(pattern);
+
+	PackageSet pkgset(REGEX);
+	for (pkgCache::GrpIterator Grp = Cache.GetPkgCache()->GrpBegin(); Grp.end() == false; ++Grp) {
+		if (regexfilter(Grp) == false)
+			continue;
+		pkgCache::PkgIterator Pkg = Grp.FindPkg(arch);
+		if (Pkg.end() == true) {
+			if (archfound == std::string::npos) {
+				std::vector<std::string> archs = APT::Configuration::getArchitectures();
+				for (std::vector<std::string>::const_iterator a = archs.begin();
+				     a != archs.end() && Pkg.end() != true; ++a)
+					Pkg = Grp.FindPkg(*a);
+			}
+			if (Pkg.end() == true)
+				continue;
+		}
+
+		pkgset.insert(Pkg);
+	}
+
+	if (pkgset.empty() == true)
+		return helper.canNotFindRegEx(Cache, pattern);
+
+	helper.showRegExSelection(pkgset, pattern);
+	return pkgset;
+}
+									/*}}}*/
+// FromName - Returns the package defined  by this string		/*{{{*/
+pkgCache::PkgIterator PackageSet::FromName(pkgCacheFile &Cache,
+			std::string const &str, CacheSetHelper &helper) {
+	std::string pkg = str;
+	size_t archfound = pkg.find_last_of(':');
+	std::string arch;
+	if (archfound != std::string::npos) {
+		arch = pkg.substr(archfound+1);
+		pkg.erase(archfound);
+	}
+
+	if (Cache.GetPkgCache() == 0)
+		return pkgCache::PkgIterator(Cache, 0);
+
+	pkgCache::PkgIterator Pkg(Cache, 0);
+	if (arch.empty() == true) {
+		pkgCache::GrpIterator Grp = Cache.GetPkgCache()->FindGrp(pkg);
+		if (Grp.end() == false)
+			Pkg = Grp.FindPreferredPkg();
+	} else
+		Pkg = Cache.GetPkgCache()->FindPkg(pkg, arch);
+
+	if (Pkg.end() == true)
+		return helper.canNotFindPkgName(Cache, str);
+	return Pkg;
+}
+									/*}}}*/
+// GroupedFromCommandLine - Return all versions specified on commandline/*{{{*/
+std::map<unsigned short, PackageSet> PackageSet::GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<PackageSet::Modifier> const &mods,
+		unsigned short const &fallback, CacheSetHelper &helper) {
+	std::map<unsigned short, PackageSet> pkgsets;
+	for (const char **I = cmdline; *I != 0; ++I) {
+		unsigned short modID = fallback;
+		std::string str = *I;
+		bool modifierPresent = false;
+		for (std::list<PackageSet::Modifier>::const_iterator mod = mods.begin();
+		     mod != mods.end(); ++mod) {
+			size_t const alength = strlen(mod->Alias);
+			switch(mod->Pos) {
+			case PackageSet::Modifier::POSTFIX:
+				if (str.compare(str.length() - alength, alength,
+						mod->Alias, 0, alength) != 0)
+					continue;
+				str.erase(str.length() - alength);
+				modID = mod->ID;
+				break;
+			case PackageSet::Modifier::PREFIX:
+				continue;
+			case PackageSet::Modifier::NONE:
+				continue;
+			}
+			modifierPresent = true;
+			break;
+		}
+		if (modifierPresent == true) {
+			bool const errors = helper.showErrors(false);
+			pkgCache::PkgIterator Pkg = FromName(Cache, *I, helper);
+			helper.showErrors(errors);
+			if (Pkg.end() == false) {
+				pkgsets[fallback].insert(Pkg);
+				continue;
+			}
+		}
+		pkgsets[modID].insert(PackageSet::FromString(Cache, str, helper));
+	}
+	return pkgsets;
+}
+									/*}}}*/
+// FromCommandLine - Return all packages specified on commandline	/*{{{*/
+PackageSet PackageSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper) {
+	PackageSet pkgset;
+	for (const char **I = cmdline; *I != 0; ++I) {
+		PackageSet pset = FromString(Cache, *I, helper);
+		pkgset.insert(pset.begin(), pset.end());
+	}
+	return pkgset;
+}
+									/*}}}*/
+// FromString - Return all packages matching a specific string		/*{{{*/
+PackageSet PackageSet::FromString(pkgCacheFile &Cache, std::string const &str, CacheSetHelper &helper) {
+	_error->PushToStack();
+
+	PackageSet pkgset;
+	pkgCache::PkgIterator Pkg = FromName(Cache, str, helper);
+	if (Pkg.end() == false)
+		pkgset.insert(Pkg);
+	else {
+		pkgset = FromTask(Cache, str, helper);
+		if (pkgset.empty() == true) {
+			pkgset = FromRegEx(Cache, str, helper);
+			if (pkgset.empty() == true)
+				pkgset = helper.canNotFindPackage(Cache, str);
+		}
+	}
+
+	if (pkgset.empty() == false)
+		_error->RevertToStack();
+	else
+		_error->MergeWithStack();
+	return pkgset;
+}
+									/*}}}*/
+// GroupedFromCommandLine - Return all versions specified on commandline/*{{{*/
+std::map<unsigned short, VersionSet> VersionSet::GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<VersionSet::Modifier> const &mods,
+		unsigned short const &fallback, CacheSetHelper &helper) {
+	std::map<unsigned short, VersionSet> versets;
+	for (const char **I = cmdline; *I != 0; ++I) {
+		unsigned short modID = fallback;
+		VersionSet::Version select = VersionSet::NEWEST;
+		std::string str = *I;
+		bool modifierPresent = false;
+		for (std::list<VersionSet::Modifier>::const_iterator mod = mods.begin();
+		     mod != mods.end(); ++mod) {
+			if (modID == fallback && mod->ID == fallback)
+				select = mod->SelectVersion;
+			size_t const alength = strlen(mod->Alias);
+			switch(mod->Pos) {
+			case VersionSet::Modifier::POSTFIX:
+				if (str.compare(str.length() - alength, alength,
+						mod->Alias, 0, alength) != 0)
+					continue;
+				str.erase(str.length() - alength);
+				modID = mod->ID;
+				select = mod->SelectVersion;
+				break;
+			case VersionSet::Modifier::PREFIX:
+				continue;
+			case VersionSet::Modifier::NONE:
+				continue;
+			}
+			modifierPresent = true;
+			break;
+		}
+
+		if (modifierPresent == true) {
+			bool const errors = helper.showErrors(false);
+			VersionSet const vset = VersionSet::FromString(Cache, std::string(*I), select, helper, true);
+			helper.showErrors(errors);
+			if (vset.empty() == false) {
+				versets[fallback].insert(vset);
+				continue;
+			}
+		}
+		versets[modID].insert(VersionSet::FromString(Cache, str, select , helper));
+	}
+	return versets;
+}
+									/*}}}*/
+// FromCommandLine - Return all versions specified on commandline	/*{{{*/
+APT::VersionSet VersionSet::FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
+		APT::VersionSet::Version const &fallback, CacheSetHelper &helper) {
+	VersionSet verset;
+	for (const char **I = cmdline; *I != 0; ++I)
+		verset.insert(VersionSet::FromString(Cache, *I, fallback, helper));
+	return verset;
+}
+									/*}}}*/
+// FromString - Returns all versions spedcified by a string		/*{{{*/
+APT::VersionSet VersionSet::FromString(pkgCacheFile &Cache, std::string pkg,
+		APT::VersionSet::Version const &fallback, CacheSetHelper &helper,
+		bool const &onlyFromName) {
+	std::string ver;
+	bool verIsRel = false;
+	size_t const vertag = pkg.find_last_of("/=");
+	if (vertag != string::npos) {
+		ver = pkg.substr(vertag+1);
+		verIsRel = (pkg[vertag] == '/');
+		pkg.erase(vertag);
+	}
+	PackageSet pkgset;
+	if (onlyFromName == false)
+		pkgset = PackageSet::FromString(Cache, pkg, helper);
+	else {
+		pkgset.insert(PackageSet::FromName(Cache, pkg, helper));
+	}
+
+	VersionSet verset;
+	bool errors = true;
+	if (pkgset.getConstructor() != PackageSet::UNKNOWN)
+		errors = helper.showErrors(false);
+	for (PackageSet::const_iterator P = pkgset.begin();
+	     P != pkgset.end(); ++P) {
+		if (vertag == string::npos) {
+			verset.insert(VersionSet::FromPackage(Cache, P, fallback, helper));
+			continue;
+		}
+		pkgCache::VerIterator V;
+		if (ver == "installed")
+			V = getInstalledVer(Cache, P, helper);
+		else if (ver == "candidate")
+			V = getCandidateVer(Cache, P, helper);
+		else if (ver == "newest") {
+			if (P->VersionList != 0)
+				V = P.VersionList();
+			else
+				V = helper.canNotFindNewestVer(Cache, P);
+		} else {
+			pkgVersionMatch Match(ver, (verIsRel == true ? pkgVersionMatch::Release :
+					pkgVersionMatch::Version));
+			V = Match.Find(P);
+			if (V.end() == true) {
+				if (verIsRel == true)
+					_error->Error(_("Release '%s' for '%s' was not found"),
+							ver.c_str(), P.FullName(true).c_str());
+				else
+					_error->Error(_("Version '%s' for '%s' was not found"),
+							ver.c_str(), P.FullName(true).c_str());
+				continue;
+			}
+		}
+		if (V.end() == true)
+			continue;
+		helper.showSelectedVersion(P, V, ver, verIsRel);
+		verset.insert(V);
+	}
+	if (pkgset.getConstructor() != PackageSet::UNKNOWN)
+		helper.showErrors(errors);
+	return verset;
+}
+									/*}}}*/
+// FromPackage - versions from package based on fallback		/*{{{*/
+VersionSet VersionSet::FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P,
+		VersionSet::Version const &fallback, CacheSetHelper &helper) {
+	VersionSet verset;
+	pkgCache::VerIterator V;
+	bool showErrors;
+	switch(fallback) {
+	case VersionSet::ALL:
+		if (P->VersionList != 0)
+			for (V = P.VersionList(); V.end() != true; ++V)
+				verset.insert(V);
+		else
+			verset.insert(helper.canNotFindAllVer(Cache, P));
+		break;
+	case VersionSet::CANDANDINST:
+		verset.insert(getInstalledVer(Cache, P, helper));
+		verset.insert(getCandidateVer(Cache, P, helper));
+		break;
+	case VersionSet::CANDIDATE:
+		verset.insert(getCandidateVer(Cache, P, helper));
+		break;
+	case VersionSet::INSTALLED:
+		verset.insert(getInstalledVer(Cache, P, helper));
+		break;
+	case VersionSet::CANDINST:
+		showErrors = helper.showErrors(false);
+		V = getCandidateVer(Cache, P, helper);
+		if (V.end() == true)
+			V = getInstalledVer(Cache, P, helper);
+		helper.showErrors(showErrors);
+		if (V.end() == false)
+			verset.insert(V);
+		else
+			verset.insert(helper.canNotFindInstCandVer(Cache, P));
+		break;
+	case VersionSet::INSTCAND:
+		showErrors = helper.showErrors(false);
+		V = getInstalledVer(Cache, P, helper);
+		if (V.end() == true)
+			V = getCandidateVer(Cache, P, helper);
+		helper.showErrors(showErrors);
+		if (V.end() == false)
+			verset.insert(V);
+		else
+			verset.insert(helper.canNotFindInstCandVer(Cache, P));
+		break;
+	case VersionSet::NEWEST:
+		if (P->VersionList != 0)
+			verset.insert(P.VersionList());
+		else
+			verset.insert(helper.canNotFindNewestVer(Cache, P));
+		break;
+	}
+	return verset;
+}
+									/*}}}*/
+// getCandidateVer - Returns the candidate version of the given package	/*{{{*/
+pkgCache::VerIterator VersionSet::getCandidateVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
+	pkgCache::VerIterator Cand;
+	if (Cache.IsPolicyBuilt() == true || Cache.IsDepCacheBuilt() == false)
+	{
+		if (unlikely(Cache.GetPolicy() == 0))
+			return pkgCache::VerIterator(Cache);
+		Cand = Cache.GetPolicy()->GetCandidateVer(Pkg);
+	} else {
+		Cand = Cache[Pkg].CandidateVerIter(Cache);
+	}
+	if (Cand.end() == true)
+		return helper.canNotFindCandidateVer(Cache, Pkg);
+	return Cand;
+}
+									/*}}}*/
+// getInstalledVer - Returns the installed version of the given package	/*{{{*/
+pkgCache::VerIterator VersionSet::getInstalledVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper) {
+	if (Pkg->CurrentVer == 0)
+		return helper.canNotFindInstalledVer(Cache, Pkg);
+	return Pkg.CurrentVer();
+}
+									/*}}}*/
+// canNotFindPkgName - handle the case no package has this name		/*{{{*/
+pkgCache::PkgIterator CacheSetHelper::canNotFindPkgName(pkgCacheFile &Cache,
+			std::string const &str) {
+	if (ShowError == true)
+		_error->Error(_("Unable to locate package %s"), str.c_str());
+	return pkgCache::PkgIterator(Cache, 0);
+}
+									/*}}}*/
+// canNotFindTask - handle the case no package is found for a task	/*{{{*/
+PackageSet CacheSetHelper::canNotFindTask(pkgCacheFile &Cache, std::string pattern) {
+	if (ShowError == true)
+		_error->Error(_("Couldn't find task '%s'"), pattern.c_str());
+	return PackageSet();
+}
+									/*}}}*/
+// canNotFindRegEx - handle the case no package is found by a regex	/*{{{*/
+PackageSet CacheSetHelper::canNotFindRegEx(pkgCacheFile &Cache, std::string pattern) {
+	if (ShowError == true)
+		_error->Error(_("Couldn't find any package by regex '%s'"), pattern.c_str());
+	return PackageSet();
+}
+									/*}}}*/
+// canNotFindPackage - handle the case no package is found from a string/*{{{*/
+PackageSet CacheSetHelper::canNotFindPackage(pkgCacheFile &Cache, std::string const &str) {
+	return PackageSet();
+}
+									/*}}}*/
+// canNotFindAllVer							/*{{{*/
+VersionSet CacheSetHelper::canNotFindAllVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select versions from package '%s' as it purely virtual"), Pkg.FullName(true).c_str());
+	return VersionSet();
+}
+									/*}}}*/
+// canNotFindInstCandVer						/*{{{*/
+VersionSet CacheSetHelper::canNotFindInstCandVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
+	return VersionSet();
+}
+									/*}}}*/
+// canNotFindInstCandVer						/*{{{*/
+VersionSet CacheSetHelper::canNotFindCandInstVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select installed nor candidate version from package '%s' as it has neither of them"), Pkg.FullName(true).c_str());
+	return VersionSet();
+}
+									/*}}}*/
+// canNotFindNewestVer							/*{{{*/
+pkgCache::VerIterator CacheSetHelper::canNotFindNewestVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select newest version from package '%s' as it is purely virtual"), Pkg.FullName(true).c_str());
+	return pkgCache::VerIterator(Cache, 0);
+}
+									/*}}}*/
+// canNotFindCandidateVer						/*{{{*/
+pkgCache::VerIterator CacheSetHelper::canNotFindCandidateVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select candidate version from package %s as it has no candidate"), Pkg.FullName(true).c_str());
+	return pkgCache::VerIterator(Cache, 0);
+}
+									/*}}}*/
+// canNotFindInstalledVer						/*{{{*/
+pkgCache::VerIterator CacheSetHelper::canNotFindInstalledVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg) {
+	if (ShowError == true)
+		_error->Error(_("Can't select installed version from package %s as it is not installed"), Pkg.FullName(true).c_str());
+	return pkgCache::VerIterator(Cache, 0);
+}
+									/*}}}*/
+}
diff --git a/apt-pkg/cacheset.h b/apt-pkg/cacheset.h
new file mode 100644
index 000000000..c8c3dd096
--- /dev/null
+++ b/apt-pkg/cacheset.h
@@ -0,0 +1,375 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/** \file cacheset.h
+   Wrappers around std::set to have set::iterators which behave
+   similar to the Iterators of the cache structures.
+
+   Provides also a few helper methods which work with these sets */
+									/*}}}*/
+#ifndef APT_CACHESET_H
+#define APT_CACHESET_H
+// Include Files							/*{{{*/
+#include <iostream>
+#include <fstream>
+#include <list>
+#include <map>
+#include <set>
+#include <string>
+
+#include <apt-pkg/cachefile.h>
+#include <apt-pkg/pkgcache.h>
+									/*}}}*/
+namespace APT {
+class PackageSet;
+class VersionSet;
+class CacheSetHelper {							/*{{{*/
+/** \class APT::CacheSetHelper
+    Simple base class with a lot of virtual methods which can be overridden
+    to alter the behavior or the output of the CacheSets.
+
+    This helper is passed around by the static methods in the CacheSets and
+    used every time they hit an error condition or something could be
+    printed out.
+*/
+public:									/*{{{*/
+	CacheSetHelper(bool const &ShowError = true) : ShowError(ShowError) {};
+	virtual ~CacheSetHelper() {};
+
+	virtual void showTaskSelection(PackageSet const &pkgset, string const &pattern) {};
+	virtual void showRegExSelection(PackageSet const &pkgset, string const &pattern) {};
+	virtual void showSelectedVersion(pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const Ver,
+				 string const &ver, bool const &verIsRel) {};
+
+	virtual pkgCache::PkgIterator canNotFindPkgName(pkgCacheFile &Cache, std::string const &str);
+	virtual PackageSet canNotFindTask(pkgCacheFile &Cache, std::string pattern);
+	virtual PackageSet canNotFindRegEx(pkgCacheFile &Cache, std::string pattern);
+	virtual PackageSet canNotFindPackage(pkgCacheFile &Cache, std::string const &str);
+	virtual VersionSet canNotFindAllVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg);
+	virtual VersionSet canNotFindInstCandVer(pkgCacheFile &Cache,
+				pkgCache::PkgIterator const &Pkg);
+	virtual VersionSet canNotFindCandInstVer(pkgCacheFile &Cache,
+				pkgCache::PkgIterator const &Pkg);
+	virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache,
+				pkgCache::PkgIterator const &Pkg);
+	virtual pkgCache::VerIterator canNotFindCandidateVer(pkgCacheFile &Cache,
+				pkgCache::PkgIterator const &Pkg);
+	virtual pkgCache::VerIterator canNotFindInstalledVer(pkgCacheFile &Cache,
+				pkgCache::PkgIterator const &Pkg);
+
+	bool showErrors() const { return ShowError; };
+	bool showErrors(bool const &newValue) { if (ShowError == newValue) return ShowError; else return ((ShowError = newValue) == false); };
+									/*}}}*/
+protected:
+	bool ShowError;
+};									/*}}}*/
+class PackageSet : public std::set<pkgCache::PkgIterator> {		/*{{{*/
+/** \class APT::PackageSet
+
+    Simple wrapper around a std::set to provide a similar interface to
+    a set of packages as to the complete set of all packages in the
+    pkgCache. */
+public:									/*{{{*/
+	/** \brief smell like a pkgCache::PkgIterator */
+	class const_iterator : public std::set<pkgCache::PkgIterator>::const_iterator {/*{{{*/
+	public:
+		const_iterator(std::set<pkgCache::PkgIterator>::const_iterator x) :
+			 std::set<pkgCache::PkgIterator>::const_iterator(x) {}
+
+		operator pkgCache::PkgIterator(void) { return **this; }
+
+		inline const char *Name() const {return (**this).Name(); }
+		inline std::string FullName(bool const &Pretty) const { return (**this).FullName(Pretty); }
+		inline std::string FullName() const { return (**this).FullName(); }
+		inline const char *Section() const {return (**this).Section(); }
+		inline bool Purge() const {return (**this).Purge(); }
+		inline const char *Arch() const {return (**this).Arch(); }
+		inline pkgCache::GrpIterator Group() const { return (**this).Group(); }
+		inline pkgCache::VerIterator VersionList() const { return (**this).VersionList(); }
+		inline pkgCache::VerIterator CurrentVer() const { return (**this).CurrentVer(); }
+		inline pkgCache::DepIterator RevDependsList() const { return (**this).RevDependsList(); }
+		inline pkgCache::PrvIterator ProvidesList() const { return (**this).ProvidesList(); }
+		inline pkgCache::PkgIterator::OkState State() const { return (**this).State(); }
+		inline const char *CandVersion() const { return (**this).CandVersion(); }
+		inline const char *CurVersion() const { return (**this).CurVersion(); }
+		inline pkgCache *Cache() const { return (**this).Cache(); };
+		inline unsigned long Index() const {return (**this).Index();};
+		// we have only valid iterators here
+		inline bool end() const { return false; };
+
+		friend std::ostream& operator<<(std::ostream& out, const_iterator i) { return operator<<(out, (*i)); }
+
+		inline pkgCache::Package const * operator->() const {
+			return &***this;
+		};
+	};
+	// 103. set::iterator is required to be modifiable, but this allows modification of keys
+	typedef APT::PackageSet::const_iterator iterator;
+									/*}}}*/
+
+	using std::set<pkgCache::PkgIterator>::insert;
+	inline void insert(pkgCache::PkgIterator const &P) { if (P.end() == false) std::set<pkgCache::PkgIterator>::insert(P); };
+	inline void insert(PackageSet const &pkgset) { insert(pkgset.begin(), pkgset.end()); };
+
+	/** \brief returns all packages in the cache who belong to the given task
+
+	    A simple helper responsible for search for all members of a task
+	    in the cache. Optional it prints a a notice about the
+	    packages chosen cause of the given task.
+	    \param Cache the packages are in
+	    \param pattern name of the task
+	    \param helper responsible for error and message handling */
+	static APT::PackageSet FromTask(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper);
+	static APT::PackageSet FromTask(pkgCacheFile &Cache, std::string const &pattern) {
+		CacheSetHelper helper;
+		return APT::PackageSet::FromTask(Cache, pattern, helper);
+	}
+
+	/** \brief returns all packages in the cache whose name matchs a given pattern
+
+	    A simple helper responsible for executing a regular expression on all
+	    package names in the cache. Optional it prints a a notice about the
+	    packages chosen cause of the given package.
+	    \param Cache the packages are in
+	    \param pattern regular expression for package names
+	    \param helper responsible for error and message handling */
+	static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string pattern, CacheSetHelper &helper);
+	static APT::PackageSet FromRegEx(pkgCacheFile &Cache, std::string const &pattern) {
+		CacheSetHelper helper;
+		return APT::PackageSet::FromRegEx(Cache, pattern, helper);
+	}
+
+	/** \brief returns all packages specified by a string
+
+	    \param Cache the packages are in
+	    \param string String the package name(s) should be extracted from
+	    \param helper responsible for error and message handling */
+	static APT::PackageSet FromString(pkgCacheFile &Cache, std::string const &string, CacheSetHelper &helper);
+	static APT::PackageSet FromString(pkgCacheFile &Cache, std::string const &string) {
+		CacheSetHelper helper;
+		return APT::PackageSet::FromString(Cache, string, helper);
+	}
+
+	/** \brief returns a package specified by a string
+
+	    \param Cache the package is in
+	    \param string String the package name should be extracted from
+	    \param helper responsible for error and message handling */
+	static pkgCache::PkgIterator FromName(pkgCacheFile &Cache, std::string const &string, CacheSetHelper &helper);
+	static pkgCache::PkgIterator FromName(pkgCacheFile &Cache, std::string const &string) {
+		CacheSetHelper helper;
+		return APT::PackageSet::FromName(Cache, string, helper);
+	}
+
+	/** \brief returns all packages specified on the commandline
+
+	    Get all package names from the commandline and executes regex's if needed.
+	    No special package command is supported, just plain names.
+	    \param Cache the packages are in
+	    \param cmdline Command line the package names should be extracted from
+	    \param helper responsible for error and message handling */
+	static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline, CacheSetHelper &helper);
+	static APT::PackageSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) {
+		CacheSetHelper helper;
+		return APT::PackageSet::FromCommandLine(Cache, cmdline, helper);
+	}
+
+	struct Modifier {
+		enum Position { NONE, PREFIX, POSTFIX };
+		unsigned short ID;
+		const char * const Alias;
+		Position Pos;
+		Modifier (unsigned short const &id, const char * const alias, Position const &pos) : ID(id), Alias(alias), Pos(pos) {};
+	};
+
+	/** \brief group packages by a action modifiers
+
+	    At some point it is needed to get from the same commandline
+	    different package sets grouped by a modifier. Take
+		apt-get install apt awesome-
+	    as an example.
+	    \param Cache the packages are in
+	    \param cmdline Command line the package names should be extracted from
+	    \param mods list of modifiers the method should accept
+	    \param fallback the default modifier group for a package
+	    \param helper responsible for error and message handling */
+	static std::map<unsigned short, PackageSet> GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<PackageSet::Modifier> const &mods,
+		unsigned short const &fallback, CacheSetHelper &helper);
+	static std::map<unsigned short, PackageSet> GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<PackageSet::Modifier> const &mods,
+		unsigned short const &fallback) {
+		CacheSetHelper helper;
+		return APT::PackageSet::GroupedFromCommandLine(Cache, cmdline,
+				mods, fallback, helper);
+	}
+
+	enum Constructor { UNKNOWN, REGEX, TASK };
+	Constructor getConstructor() const { return ConstructedBy; };
+
+	PackageSet() : ConstructedBy(UNKNOWN) {};
+	PackageSet(Constructor const &by) : ConstructedBy(by) {};
+									/*}}}*/
+private:								/*{{{*/
+	Constructor ConstructedBy;
+									/*}}}*/
+};									/*}}}*/
+class VersionSet : public std::set<pkgCache::VerIterator> {		/*{{{*/
+/** \class APT::VersionSet
+
+    Simple wrapper around a std::set to provide a similar interface to
+    a set of versions as to the complete set of all versions in the
+    pkgCache. */
+public:									/*{{{*/
+	/** \brief smell like a pkgCache::VerIterator */
+	class const_iterator : public std::set<pkgCache::VerIterator>::const_iterator {/*{{{*/
+	public:
+		const_iterator(std::set<pkgCache::VerIterator>::const_iterator x) :
+			 std::set<pkgCache::VerIterator>::const_iterator(x) {}
+
+		operator pkgCache::VerIterator(void) { return **this; }
+
+		inline pkgCache *Cache() const { return (**this).Cache(); };
+		inline unsigned long Index() const {return (**this).Index();};
+		// we have only valid iterators here
+		inline bool end() const { return false; };
+
+		inline pkgCache::Version const * operator->() const {
+			return &***this;
+		};
+
+		inline int CompareVer(const pkgCache::VerIterator &B) const { return (**this).CompareVer(B); };
+		inline const char *VerStr() const { return (**this).VerStr(); };
+		inline const char *Section() const { return (**this).Section(); };
+		inline const char *Arch() const { return (**this).Arch(); };
+		inline const char *Arch(bool const pseudo) const { return (**this).Arch(pseudo); };
+		inline pkgCache::PkgIterator ParentPkg() const { return (**this).ParentPkg(); };
+		inline pkgCache::DescIterator DescriptionList() const { return (**this).DescriptionList(); };
+		inline pkgCache::DescIterator TranslatedDescription() const { return (**this).TranslatedDescription(); };
+		inline pkgCache::DepIterator DependsList() const { return (**this).DependsList(); };
+		inline pkgCache::PrvIterator ProvidesList() const { return (**this).ProvidesList(); };
+		inline pkgCache::VerFileIterator FileList() const { return (**this).FileList(); };
+		inline bool Downloadable() const { return (**this).Downloadable(); };
+		inline const char *PriorityType() const { return (**this).PriorityType(); };
+		inline string RelStr() const { return (**this).RelStr(); };
+		inline bool Automatic() const { return (**this).Automatic(); };
+		inline bool Pseudo() const { return (**this).Pseudo(); };
+		inline pkgCache::VerFileIterator NewestFile() const { return (**this).NewestFile(); };
+	};
+									/*}}}*/
+	// 103. set::iterator is required to be modifiable, but this allows modification of keys
+	typedef APT::VersionSet::const_iterator iterator;
+
+	using std::set<pkgCache::VerIterator>::insert;
+	inline void insert(pkgCache::VerIterator const &V) { if (V.end() == false) std::set<pkgCache::VerIterator>::insert(V); };
+	inline void insert(VersionSet const &verset) { insert(verset.begin(), verset.end()); };
+
+	/** \brief specifies which version(s) will be returned if non is given */
+	enum Version {
+		/** All versions */
+		ALL,
+		/** Candidate and installed version */
+		CANDANDINST,
+		/** Candidate version */
+		CANDIDATE,
+		/** Installed version */
+		INSTALLED,
+		/** Candidate or if non installed version */
+		CANDINST,
+		/** Installed or if non candidate version */
+		INSTCAND,
+		/** Newest version */
+		NEWEST
+	};
+
+	/** \brief returns all versions specified on the commandline
+
+	    Get all versions from the commandline, uses given default version if
+	    non specifically requested  and executes regex's if needed on names.
+	    \param Cache the packages and versions are in
+	    \param cmdline Command line the versions should be extracted from
+	    \param helper responsible for error and message handling */
+	static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
+			APT::VersionSet::Version const &fallback, CacheSetHelper &helper);
+	static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline,
+			APT::VersionSet::Version const &fallback) {
+		CacheSetHelper helper;
+		return APT::VersionSet::FromCommandLine(Cache, cmdline, fallback, helper);
+	}
+	static APT::VersionSet FromCommandLine(pkgCacheFile &Cache, const char **cmdline) {
+		return APT::VersionSet::FromCommandLine(Cache, cmdline, CANDINST);
+	}
+
+	static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg,
+			APT::VersionSet::Version const &fallback, CacheSetHelper &helper,
+			bool const &onlyFromName = false);
+	static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg,
+			APT::VersionSet::Version const &fallback) {
+		CacheSetHelper helper;
+		return APT::VersionSet::FromString(Cache, pkg, fallback, helper);
+	}
+	static APT::VersionSet FromString(pkgCacheFile &Cache, std::string pkg) {
+		return APT::VersionSet::FromString(Cache, pkg, CANDINST);
+	}
+
+	/** \brief returns all versions specified for the package
+
+	    \param Cache the package and versions are in
+	    \param P the package in question
+	    \param fallback the version(s) you want to get
+	    \param helper the helper used for display and error handling */
+	static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P,
+		VersionSet::Version const &fallback, CacheSetHelper &helper);
+	static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P,
+			APT::VersionSet::Version const &fallback) {
+		CacheSetHelper helper;
+		return APT::VersionSet::FromPackage(Cache, P, fallback, helper);
+	}
+	static APT::VersionSet FromPackage(pkgCacheFile &Cache, pkgCache::PkgIterator const &P) {
+		return APT::VersionSet::FromPackage(Cache, P, CANDINST);
+	}
+
+	struct Modifier {
+		enum Position { NONE, PREFIX, POSTFIX };
+		unsigned short ID;
+		const char * const Alias;
+		Position Pos;
+		VersionSet::Version SelectVersion;
+		Modifier (unsigned short const &id, const char * const alias, Position const &pos,
+			  VersionSet::Version const &select) : ID(id), Alias(alias), Pos(pos),
+			 SelectVersion(select) {};
+	};
+
+	static std::map<unsigned short, VersionSet> GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<VersionSet::Modifier> const &mods,
+		unsigned short const &fallback, CacheSetHelper &helper);
+	static std::map<unsigned short, VersionSet> GroupedFromCommandLine(
+		pkgCacheFile &Cache, const char **cmdline,
+		std::list<VersionSet::Modifier> const &mods,
+		unsigned short const &fallback) {
+		CacheSetHelper helper;
+		return APT::VersionSet::GroupedFromCommandLine(Cache, cmdline,
+				mods, fallback, helper);
+	}
+									/*}}}*/
+protected:								/*{{{*/
+
+	/** \brief returns the candidate version of the package
+
+	    \param Cache to be used to query for information
+	    \param Pkg we want the candidate version from this package */
+	static pkgCache::VerIterator getCandidateVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper);
+
+	/** \brief returns the installed version of the package
+
+	    \param Cache to be used to query for information
+	    \param Pkg we want the installed version from this package */
+	static pkgCache::VerIterator getInstalledVer(pkgCacheFile &Cache,
+		pkgCache::PkgIterator const &Pkg, CacheSetHelper &helper);
+									/*}}}*/
+};									/*}}}*/
+}
+#endif
diff --git a/apt-pkg/cdrom.cc b/apt-pkg/cdrom.cc
index 783ffc430..e3e0027fc 100644
--- a/apt-pkg/cdrom.cc
+++ b/apt-pkg/cdrom.cc
@@ -6,6 +6,8 @@
 #include<apt-pkg/cdromutl.h>
 #include<apt-pkg/strutl.h>
 #include<apt-pkg/cdrom.h>
+#include<apt-pkg/aptconfiguration.h>
+
 #include<sstream>
 #include<fstream>
 #include<config.h>
@@ -216,33 +218,23 @@ int pkgCdrom::Score(string Path)
 /* Here we drop everything that is not this machines arch */
 bool pkgCdrom::DropBinaryArch(vector<string> &List)
 {
-   char S[300];
-   snprintf(S,sizeof(S),"/binary-%s/",
-	    _config->Find("Apt::Architecture").c_str());
-   
+
    for (unsigned int I = 0; I < List.size(); I++)
    {
       const char *Str = List[I].c_str();
-      
-      const char *Res;
-      if ((Res = strstr(Str,"/binary-")) == 0)
+      const char *Start, *End;
+      if ((Start = strstr(Str,"/binary-")) == 0)
 	 continue;
 
-      // Weird, remove it.
-      if (strlen(Res) < strlen(S))
-      {
-	 List.erase(List.begin() + I);
-	 I--;
-	 continue;
-      }
-	  
-      // See if it is our arch
-      if (stringcmp(Res,Res + strlen(S),S) == 0)
-	 continue;
-      
-      // Erase it
+      // Between Start and End is the architecture
+      Start += 8;
+      if ((End = strstr(Start,"/")) != 0 && Start != End &&
+          APT::Configuration::checkArchitecture(string(Start, --End)) == true)
+	 continue; // okay, architecture is accepted
+
+      // not accepted -> Erase it
       List.erase(List.begin() + I);
-      I--;
+      --I; // the next entry is at the same index after the erase
    }
    
    return true;
@@ -391,7 +383,7 @@ bool pkgCdrom::WriteDatabase(Configuration &Cnf)
 
    Out.close();
    
-   rename(DFile.c_str(),string(DFile + '~').c_str());
+   link(DFile.c_str(),string(DFile + '~').c_str());
    if (rename(NewFile.c_str(),DFile.c_str()) != 0)
       return _error->Errno("rename","Failed to rename %s.new to %s",
 			   DFile.c_str(),DFile.c_str());
diff --git a/apt-pkg/clean.cc b/apt-pkg/clean.cc
index 0d1dfbf74..629afd7cf 100644
--- a/apt-pkg/clean.cc
+++ b/apt-pkg/clean.cc
@@ -12,6 +12,7 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
 
 #include <apti18n.h>    
 
@@ -26,7 +27,6 @@
 bool pkgArchiveCleaner::Go(string Dir,pkgCache &Cache)
 {
    bool CleanInstalled = _config->FindB("APT::Clean-Installed",true);
-   string MyArch = _config->Find("APT::Architecture");
       
    DIR *D = opendir(Dir.c_str());
    if (D == 0)
@@ -75,9 +75,9 @@ bool pkgArchiveCleaner::Go(string Dir,pkgCache &Cache)
       for (I = Start; *I != 0 && *I != '.' ;I++);
       if (*I != '.')
 	 continue;
-      string Arch = DeQuoteString(string(Start,I-Start));
+      string const Arch = DeQuoteString(string(Start,I-Start));
       
-      if (Arch != "all" && Arch != MyArch)
+      if (APT::Configuration::checkArchitecture(Arch) == false)
 	 continue;
       
       // Lookup the package
diff --git a/apt-pkg/contrib/cmndline.cc b/apt-pkg/contrib/cmndline.cc
index bfd53695e..5a9944096 100644
--- a/apt-pkg/contrib/cmndline.cc
+++ b/apt-pkg/contrib/cmndline.cc
@@ -135,7 +135,9 @@ bool CommandLine::Parse(int argc,const char **argv)
    for (; I != argc; I++)
       *Files++ = argv[I];
    *Files = 0;
-   
+
+   SaveInConfig(argc, argv);
+
    return true;
 }
 									/*}}}*/
@@ -351,3 +353,41 @@ bool CommandLine::DispatchArg(Dispatch *Map,bool NoMatch)
    return false;
 }
 									/*}}}*/
+// CommandLine::SaveInConfig - for output later in a logfile or so	/*{{{*/
+// ---------------------------------------------------------------------
+/* We save the commandline here to have it around later for e.g. logging.
+   It feels a bit like a hack here and isn't bulletproof, but it is better
+   than nothing after all. */
+void CommandLine::SaveInConfig(unsigned int const &argc, char const * const * const argv)
+{
+   char cmdline[100 + argc * 50];
+   unsigned int length = 0;
+   bool lastWasOption = false;
+   bool closeQuote = false;
+   for (unsigned int i = 0; i < argc && length < sizeof(cmdline); ++i, ++length)
+   {
+      for (unsigned int j = 0; argv[i][j] != '\0' && length < sizeof(cmdline)-1; ++j, ++length)
+      {
+	 cmdline[length] = argv[i][j];
+	 if (lastWasOption == true && argv[i][j] == '=')
+	 {
+	    // That is possibly an option: Quote it if it includes spaces,
+	    // the benefit is that this will eliminate also most false positives
+	    const char* c = &argv[i][j+1];
+	    for (; *c != '\0' && *c != ' '; ++c);
+	    if (*c == '\0') continue;
+	    cmdline[++length] = '"';
+	    closeQuote = true;
+	 }
+      }
+      if (closeQuote == true)
+	 cmdline[length++] = '"';
+      // Problem: detects also --hello
+      if (cmdline[length-1] == 'o')
+	 lastWasOption = true;
+      cmdline[length] = ' ';
+   }
+   cmdline[--length] = '\0';
+   _config->Set("CommandLine::AsString", cmdline);
+}
+									/*}}}*/
diff --git a/apt-pkg/contrib/cmndline.h b/apt-pkg/contrib/cmndline.h
index e28071e81..7c0c71aa7 100644
--- a/apt-pkg/contrib/cmndline.h
+++ b/apt-pkg/contrib/cmndline.h
@@ -60,6 +60,7 @@ class CommandLine
    Configuration *Conf;
    bool HandleOpt(int &I,int argc,const char *argv[],
 		  const char *&Opt,Args *A,bool PreceedeMatch = false);
+   void static SaveInConfig(unsigned int const &argc, char const * const * const argv);
 
    public:
    
diff --git a/apt-pkg/contrib/configuration.cc b/apt-pkg/contrib/configuration.cc
index 8e3b84499..81cc87d15 100644
--- a/apt-pkg/contrib/configuration.cc
+++ b/apt-pkg/contrib/configuration.cc
@@ -79,7 +79,7 @@ Configuration::~Configuration()
 /* This will lookup a single item by name below another item. It is a 
    helper function for the main lookup function */
 Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
-					   unsigned long Len,bool Create)
+					   unsigned long const &Len,bool const &Create)
 {
    int Res = 1;
    Item *I = Head->Child;
@@ -112,7 +112,7 @@ Configuration::Item *Configuration::Lookup(Item *Head,const char *S,
 // ---------------------------------------------------------------------
 /* This performs a fully scoped lookup of a given name, possibly creating
    new items */
-Configuration::Item *Configuration::Lookup(const char *Name,bool Create)
+Configuration::Item *Configuration::Lookup(const char *Name,bool const &Create)
 {
    if (Name == 0)
       return Root->Child;
@@ -239,7 +239,7 @@ vector<string> Configuration::FindVector(const char *Name) const
 // Configuration::FindI - Find an integer value				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-int Configuration::FindI(const char *Name,int Default) const
+int Configuration::FindI(const char *Name,int const &Default) const
 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
@@ -256,7 +256,7 @@ int Configuration::FindI(const char *Name,int Default) const
 // Configuration::FindB - Find a boolean type				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool Configuration::FindB(const char *Name,bool Default) const
+bool Configuration::FindB(const char *Name,bool const &Default) const
 {
    const Item *Itm = Lookup(Name);
    if (Itm == 0 || Itm->Value.empty() == true)
@@ -332,7 +332,7 @@ void Configuration::Set(const char *Name,const string &Value)
 // Configuration::Set - Set an integer value				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void Configuration::Set(const char *Name,int Value)
+void Configuration::Set(const char *Name,int const &Value)
 {
    Item *Itm = Lookup(Name,true);
    if (Itm == 0)
@@ -345,7 +345,7 @@ void Configuration::Set(const char *Name,int Value)
 // Configuration::Clear - Clear an single value from a list	        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void Configuration::Clear(const string Name, int Value)
+void Configuration::Clear(string const &Name, int const &Value)
 {
    char S[300];
    snprintf(S,sizeof(S),"%i",Value);
@@ -355,7 +355,7 @@ void Configuration::Clear(const string Name, int Value)
 // Configuration::Clear - Clear an single value from a list	        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void Configuration::Clear(const string Name, string Value)
+void Configuration::Clear(string const &Name, string const &Value)
 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0 || Top->Child == 0)
@@ -386,7 +386,7 @@ void Configuration::Clear(const string Name, string Value)
 // Configuration::Clear - Clear an entire tree				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void Configuration::Clear(string Name)
+void Configuration::Clear(string const &Name)
 {
    Item *Top = Lookup(Name.c_str(),false);
    if (Top == 0) 
@@ -501,8 +501,8 @@ string Configuration::Item::FullTag(const Item *Stop) const
    sections like 'zone "foo.org" { .. };' This causes each section to be
    added in with a tag like "zone::foo.org" instead of being split 
    tag/value. AsSectional enables Sectional parsing.*/
-bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
-		    unsigned Depth)
+bool ReadConfigFile(Configuration &Conf,const string &FName,bool const &AsSectional,
+		    unsigned const &Depth)
 {   
    // Open the stream for reading
    ifstream F(FName.c_str(),ios::in); 
@@ -773,6 +773,8 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
 	       else
 		  return _error->Error(_("Syntax error %s:%u: Unsupported directive '%s'"),FName.c_str(),CurLine,Tag.c_str());
 	    }
+	    else if (Tag.empty() == true && NoWord == false && Word == "#clear")
+	       return _error->Error(_("Syntax error %s:%u: clear directive requires an option tree as argument"),FName.c_str(),CurLine);
 	    else
 	    {
 	       // Set the item in the configuration class
@@ -830,7 +832,7 @@ bool ReadConfigFile(Configuration &Conf,const string &FName,bool AsSectional,
 // ---------------------------------------------------------------------
 /* */
 bool ReadConfigDir(Configuration &Conf,const string &Dir,
-		   bool AsSectional, unsigned Depth)
+		   bool const &AsSectional, unsigned const &Depth)
 {
    vector<string> const List = GetListOfFilesInDir(Dir, "conf", true, true);
 
@@ -841,3 +843,46 @@ bool ReadConfigDir(Configuration &Conf,const string &Dir,
    return true;
 }
 									/*}}}*/
+// MatchAgainstConfig Constructor					/*{{{*/
+Configuration::MatchAgainstConfig::MatchAgainstConfig(char const * Config)
+{
+   std::vector<std::string> const strings = _config->FindVector(Config);
+   for (std::vector<std::string>::const_iterator s = strings.begin();
+	s != strings.end(); ++s)
+   {
+      regex_t *p = new regex_t;
+      if (regcomp(p, s->c_str(), REG_EXTENDED | REG_ICASE | REG_NOSUB) == 0)
+	 patterns.push_back(p);
+      else
+      {
+	 regfree(p);
+	 delete p;
+	 _error->Warning("Regex compilation error for '%s' in configuration option '%s'",
+				s->c_str(), Config);
+      }
+    }
+
+}
+									/*}}}*/
+// MatchAgainstConfig Destructor					/*{{{*/
+Configuration::MatchAgainstConfig::~MatchAgainstConfig()
+{
+   for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+	p != patterns.end(); ++p)
+   {
+      regfree(*p);
+      delete *p;
+   }
+}
+									/*}}}*/
+// MatchAgainstConfig::Match - returns true if a pattern matches	/*{{{*/
+bool Configuration::MatchAgainstConfig::Match(char const * str) const
+{
+   for(std::vector<regex_t *>::const_iterator p = patterns.begin();
+	p != patterns.end(); ++p)
+      if (regexec(*p, str, 0, 0, 0) == 0)
+	 return true;
+
+   return false;
+}
+									/*}}}*/
diff --git a/apt-pkg/contrib/configuration.h b/apt-pkg/contrib/configuration.h
index e2da83f5b..cbe18e4e5 100644
--- a/apt-pkg/contrib/configuration.h
+++ b/apt-pkg/contrib/configuration.h
@@ -28,7 +28,7 @@
 #ifndef PKGLIB_CONFIGURATION_H
 #define PKGLIB_CONFIGURATION_H
 
-
+#include <regex.h>
 
 #include <string>
 #include <vector>
@@ -58,8 +58,8 @@ class Configuration
    Item *Root;
    bool ToFree;
    
-   Item *Lookup(Item *Head,const char *S,unsigned long Len,bool Create);
-   Item *Lookup(const char *Name,bool Create);   
+   Item *Lookup(Item *Head,const char *S,unsigned long const &Len,bool const &Create);
+   Item *Lookup(const char *Name,const bool &Create);
    inline const Item *Lookup(const char *Name) const
    {
       return ((Configuration *)this)->Lookup(Name,false);
@@ -68,32 +68,33 @@ class Configuration
    public:
 
    string Find(const char *Name,const char *Default = 0) const;
-   string Find(const string Name,const char *Default = 0) const {return Find(Name.c_str(),Default);};
+   string Find(string const &Name,const char *Default = 0) const {return Find(Name.c_str(),Default);};
+   string Find(string const &Name, string const &Default) const {return Find(Name.c_str(),Default.c_str());};
    string FindFile(const char *Name,const char *Default = 0) const;
    string FindDir(const char *Name,const char *Default = 0) const;
-   std::vector<string> FindVector(const string &Name) const;
+   std::vector<string> FindVector(string const &Name) const;
    std::vector<string> FindVector(const char *Name) const;
-   int FindI(const char *Name,int Default = 0) const;
-   int FindI(const string Name,int Default = 0) const {return FindI(Name.c_str(),Default);};
-   bool FindB(const char *Name,bool Default = false) const;
-   bool FindB(const string Name,bool Default = false) const {return FindB(Name.c_str(),Default);};
+   int FindI(const char *Name,int const &Default = 0) const;
+   int FindI(string const &Name,int const &Default = 0) const {return FindI(Name.c_str(),Default);};
+   bool FindB(const char *Name,bool const &Default = false) const;
+   bool FindB(string const &Name,bool const &Default = false) const {return FindB(Name.c_str(),Default);};
    string FindAny(const char *Name,const char *Default = 0) const;
 	      
-   inline void Set(const string Name,string Value) {Set(Name.c_str(),Value);};
+   inline void Set(const string &Name,const string &Value) {Set(Name.c_str(),Value);};
    void CndSet(const char *Name,const string &Value);
    void Set(const char *Name,const string &Value);
-   void Set(const char *Name,int Value);   
+   void Set(const char *Name,const int &Value);
    
-   inline bool Exists(const string Name) const {return Exists(Name.c_str());};
+   inline bool Exists(const string &Name) const {return Exists(Name.c_str());};
    bool Exists(const char *Name) const;
    bool ExistsAny(const char *Name) const;
 
    // clear a whole tree
-   void Clear(const string Name);
+   void Clear(const string &Name);
 
    // remove a certain value from a list (e.g. the list of "APT::Keep-Fds")
-   void Clear(const string List, string Value);
-   void Clear(const string List, int Value);
+   void Clear(string const &List, string const &Value);
+   void Clear(string const &List, int const &Value);
 
    inline const Item *Tree(const char *Name) const {return Lookup(Name);};
 
@@ -103,16 +104,33 @@ class Configuration
    Configuration(const Item *Root);
    Configuration();
    ~Configuration();
+
+   /** \brief match a string against a configurable list of patterns */
+   class MatchAgainstConfig
+   {
+     std::vector<regex_t *> patterns;
+
+   public:
+     MatchAgainstConfig(char const * Config);
+     virtual ~MatchAgainstConfig();
+
+     /** \brief Returns \b true for a string matching one of the patterns */
+     bool Match(char const * str) const;
+     bool Match(std::string const &str) const { return Match(str.c_str()); };
+
+     /** \brief returns if the matcher setup was successful */
+     bool wasConstructedSuccessfully() const { return patterns.empty() == false; }
+   };
 };
 
 extern Configuration *_config;
 
 bool ReadConfigFile(Configuration &Conf,const string &FName,
-		    bool AsSectional = false,
-		    unsigned Depth = 0);
+		    bool const &AsSectional = false,
+		    unsigned const &Depth = 0);
 
 bool ReadConfigDir(Configuration &Conf,const string &Dir,
-		   bool AsSectional = false,
-		   unsigned Depth = 0);
+		   bool const &AsSectional = false,
+		   unsigned const &Depth = 0);
 
 #endif
diff --git a/apt-pkg/contrib/error.cc b/apt-pkg/contrib/error.cc
index 927b7e05c..fbb6e4636 100644
--- a/apt-pkg/contrib/error.cc
+++ b/apt-pkg/contrib/error.cc
@@ -1,16 +1,15 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: error.cc,v 1.11 2002/03/26 07:38:58 jgg Exp $
 /* ######################################################################
-   
-   Global Erorr Class - Global error mechanism
+
+   Global Error Class - Global error mechanism
 
    We use a simple STL vector to store each error record. A PendingFlag
    is kept which indicates when the vector contains a Sever error.
-   
+
    This source is placed in the Public Domain, do with it what you will
    It was originally written by Jason Gunthorpe.
-   
+
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
@@ -19,7 +18,6 @@
 #include <iostream>
 #include <errno.h>
 #include <stdio.h>
-#include <stdarg.h>
 #include <unistd.h>
 
 #include <string>
@@ -28,209 +26,217 @@
 #include "config.h"
    									/*}}}*/
 
-using namespace std;
-
 // Global Error Object							/*{{{*/
 /* If the implementation supports posix threads then the accessor function
    is compiled to be thread safe otherwise a non-safe version is used. A
    Per-Thread error object is maintained in much the same manner as libc
    manages errno */
 #if defined(_POSIX_THREADS) && defined(HAVE_PTHREAD)
- #include <pthread.h>
-
- static pthread_key_t ErrorKey;
- static void ErrorDestroy(void *Obj) {delete (GlobalError *)Obj;};
- static void KeyAlloc() {pthread_key_create(&ErrorKey,ErrorDestroy);};
-
- GlobalError *_GetErrorObj()
- {
-    static pthread_once_t Once = PTHREAD_ONCE_INIT;
-    pthread_once(&Once,KeyAlloc);
-    
-    void *Res = pthread_getspecific(ErrorKey);
-    if (Res == 0)
-       pthread_setspecific(ErrorKey,Res = new GlobalError);
-    return (GlobalError *)Res;
- }
+	#include <pthread.h>
+
+	static pthread_key_t ErrorKey;
+	static void ErrorDestroy(void *Obj) {delete (GlobalError *)Obj;};
+	static void KeyAlloc() {pthread_key_create(&ErrorKey,ErrorDestroy);};
+
+	GlobalError *_GetErrorObj() {
+		static pthread_once_t Once = PTHREAD_ONCE_INIT;
+		pthread_once(&Once,KeyAlloc);
+
+		void *Res = pthread_getspecific(ErrorKey);
+		if (Res == 0)
+			pthread_setspecific(ErrorKey,Res = new GlobalError);
+		return (GlobalError *)Res;
+	}
 #else
- GlobalError *_GetErrorObj()
- {
-    static GlobalError *Obj = new GlobalError;
-    return Obj;
- }
+	GlobalError *_GetErrorObj() {
+		static GlobalError *Obj = new GlobalError;
+		return Obj;
+	}
 #endif
 									/*}}}*/
-
 // GlobalError::GlobalError - Constructor				/*{{{*/
-// ---------------------------------------------------------------------
-/* */
-GlobalError::GlobalError() : List(0), PendingFlag(false)
-{
+GlobalError::GlobalError() : PendingFlag(false) {}
+									/*}}}*/
+// GlobalError::FatalE - Get part of the error string from errno	/*{{{*/
+bool GlobalError::FatalE(const char *Function,const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return InsertErrno(FATAL, Function, Description, args);
 }
 									/*}}}*/
 // GlobalError::Errno - Get part of the error string from errno		/*{{{*/
-// ---------------------------------------------------------------------
-/* Function indicates the stdlib function that failed and Description is
-   a user string that leads the text. Form is:
-     Description - Function (errno: strerror)
-   Carefull of the buffer overrun, sprintf.
- */
-bool GlobalError::Errno(const char *Function,const char *Description,...)
-{
-   va_list args;
-   va_start(args,Description);
-
-   // sprintf the description
-   char S[400];
-   vsnprintf(S,sizeof(S),Description,args);
-   snprintf(S + strlen(S),sizeof(S) - strlen(S),
-	    " - %s (%i: %s)",Function,errno,strerror(errno));
-
-   // Put it on the list
-   Item *Itm = new Item;
-   Itm->Text = S;
-   Itm->Error = true;
-   Insert(Itm);
-
-   PendingFlag = true;
-
-   return false;
-}
-									/*}}}*/
-// GlobalError::WarningE - Get part of the warn string from errno	/*{{{*/
-// ---------------------------------------------------------------------
-/* Function indicates the stdlib function that failed and Description is
-   a user string that leads the text. Form is:
-     Description - Function (errno: strerror)
-   Carefull of the buffer overrun, sprintf.
- */
-bool GlobalError::WarningE(const char *Function,const char *Description,...)
-{
-   va_list args;
-   va_start(args,Description);
-
-   // sprintf the description
-   char S[400];
-   vsnprintf(S,sizeof(S),Description,args);
-   snprintf(S + strlen(S),sizeof(S) - strlen(S),
-	    " - %s (%i: %s)",Function,errno,strerror(errno));
-
-   // Put it on the list
-   Item *Itm = new Item;
-   Itm->Text = S;
-   Itm->Error = false;
-   Insert(Itm);
-
-   return false;
+bool GlobalError::Errno(const char *Function,const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return InsertErrno(ERROR, Function, Description, args);
+}
+									/*}}}*/
+// GlobalError::WarningE - Get part of the warning string from errno	/*{{{*/
+bool GlobalError::WarningE(const char *Function,const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return InsertErrno(WARNING, Function, Description, args);
+}
+									/*}}}*/
+// GlobalError::NoticeE - Get part of the notice string from errno	/*{{{*/
+bool GlobalError::NoticeE(const char *Function,const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return InsertErrno(NOTICE, Function, Description, args);
+}
+									/*}}}*/
+// GlobalError::DebugE - Get part of the debug string from errno	/*{{{*/
+bool GlobalError::DebugE(const char *Function,const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return InsertErrno(DEBUG, Function, Description, args);
+}
+									/*}}}*/
+// GlobalError::InsertErrno - formats an error message with the errno	/*{{{*/
+bool GlobalError::InsertErrno(MsgType type, const char* Function,
+			      const char* Description, va_list &args) {
+	char S[400];
+	snprintf(S, sizeof(S), "%s - %s (%i: %s)", Description,
+		 Function, errno, strerror(errno));
+	return Insert(type, S, args);
+}
+									/*}}}*/
+// GlobalError::Fatal - Add a fatal error to the list			/*{{{*/
+bool GlobalError::Fatal(const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return Insert(FATAL, Description, args);
 }
 									/*}}}*/
 // GlobalError::Error - Add an error to the list			/*{{{*/
-// ---------------------------------------------------------------------
-/* Just vsprintfs and pushes */
-bool GlobalError::Error(const char *Description,...)
-{
-   va_list args;
-   va_start(args,Description);
-
-   // sprintf the description
-   char S[400];
-   vsnprintf(S,sizeof(S),Description,args);
-
-   // Put it on the list
-   Item *Itm = new Item;
-   Itm->Text = S;
-   Itm->Error = true;
-   Insert(Itm);
-   
-   PendingFlag = true;
-   
-   return false;
+bool GlobalError::Error(const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return Insert(ERROR, Description, args);
 }
 									/*}}}*/
 // GlobalError::Warning - Add a warning to the list			/*{{{*/
-// ---------------------------------------------------------------------
-/* This doesn't set the pending error flag */
-bool GlobalError::Warning(const char *Description,...)
+bool GlobalError::Warning(const char *Description,...) {
+	va_list args;
+	va_start(args,Description);
+	return Insert(WARNING, Description, args);
+}
+									/*}}}*/
+// GlobalError::Notice - Add a notice to the list			/*{{{*/
+bool GlobalError::Notice(const char *Description,...)
 {
-   va_list args;
-   va_start(args,Description);
+	va_list args;
+	va_start(args,Description);
+	return Insert(NOTICE, Description, args);
+}
+									/*}}}*/
+// GlobalError::Debug - Add a debug to the list				/*{{{*/
+bool GlobalError::Debug(const char *Description,...)
+{
+	va_list args;
+	va_start(args,Description);
+	return Insert(DEBUG, Description, args);
+}
+									/*}}}*/
+// GlobalError::Insert - Insert a new item at the end			/*{{{*/
+bool GlobalError::Insert(MsgType type, const char* Description,
+			 va_list &args) {
+	char S[400];
+	vsnprintf(S,sizeof(S),Description,args);
+
+	Item const m(S, type);
+	Messages.push_back(m);
+
+	if (type == ERROR || type == FATAL)
+		PendingFlag = true;
 
-   // sprintf the description
-   char S[400];
-   vsnprintf(S,sizeof(S),Description,args);
+	if (type == FATAL || type == DEBUG)
+		std::clog << m << std::endl;
 
-   // Put it on the list
-   Item *Itm = new Item;
-   Itm->Text = S;
-   Itm->Error = false;
-   Insert(Itm);
-   
-   return false;
+	return false;
 }
 									/*}}}*/
 // GlobalError::PopMessage - Pulls a single message out			/*{{{*/
-// ---------------------------------------------------------------------
-/* This should be used in a loop checking empty() each cycle. It returns
-   true if the message is an error. */
-bool GlobalError::PopMessage(string &Text)
-{
-   if (List == 0)
-      return false;
-      
-   bool Ret = List->Error;
-   Text = List->Text;
-   Item *Old = List;
-   List = List->Next;
-   delete Old;
-   
-   // This really should check the list to see if only warnings are left..
-   if (List == 0)
-      PendingFlag = false;
-   
-   return Ret;
+bool GlobalError::PopMessage(std::string &Text) {
+	if (Messages.empty() == true)
+		return false;
+
+	Item const msg = Messages.front();
+	Messages.pop_front();
+
+	bool const Ret = (msg.Type == ERROR || msg.Type == FATAL);
+	Text = msg.Text;
+	if (PendingFlag == false || Ret == false)
+		return Ret;
+
+	// check if another error message is pending
+	for (std::list<Item>::const_iterator m = Messages.begin();
+	     m != Messages.end(); m++)
+		if (m->Type == ERROR || m->Type == FATAL)
+			return Ret;
+
+	PendingFlag = false;
+	return Ret;
 }
 									/*}}}*/
 // GlobalError::DumpErrors - Dump all of the errors/warns to cerr	/*{{{*/
-// ---------------------------------------------------------------------
-/* */
-void GlobalError::DumpErrors()
-{
-   // Print any errors or warnings found
-   string Err;
-   while (empty() == false)
-   {
-      bool Type = PopMessage(Err);
-      if (Type == true)
-	 cerr << "E: " << Err << endl;
-      else
-	 cerr << "W: " << Err << endl;
-   }
-}
-									/*}}}*/
-// GlobalError::Discard - Discard									/*{{{*/
-// ---------------------------------------------------------------------
-/* */
-void GlobalError::Discard()
-{
-   while (List != 0)
-   {
-      Item *Old = List;
-      List = List->Next;
-      delete Old;
-   }
-   
-   PendingFlag = false;
+void GlobalError::DumpErrors(std::ostream &out, MsgType const &trashhold,
+			     bool const &mergeStack) {
+	if (mergeStack == true)
+		for (std::list<MsgStack>::const_reverse_iterator s = Stacks.rbegin();
+		     s != Stacks.rend(); ++s)
+			Messages.insert(Messages.begin(), s->Messages.begin(), s->Messages.end());
+
+	for (std::list<Item>::const_iterator m = Messages.begin();
+	     m != Messages.end(); m++)
+		if (m->Type >= trashhold)
+			out << (*m) << std::endl;
+	Discard();
+}
+									/*}}}*/
+// GlobalError::Discard - Discard					/*{{{*/
+void GlobalError::Discard() {
+	Messages.clear();
+	PendingFlag = false;
 };
 									/*}}}*/
-// GlobalError::Insert - Insert a new item at the end			/*{{{*/
-// ---------------------------------------------------------------------
-/* */
-void GlobalError::Insert(Item *Itm)
-{
-   Item **End = &List;
-   for (Item *I = List; I != 0; I = I->Next)
-      End = &I->Next;
-   Itm->Next = *End;
-   *End = Itm;
+// GlobalError::empty - does our error list include anything?		/*{{{*/
+bool GlobalError::empty(MsgType const &trashhold) const {
+	if (PendingFlag == true)
+		return false;
+
+	if (Messages.empty() == true)
+		return true;
+
+	for (std::list<Item>::const_iterator m = Messages.begin();
+	     m != Messages.end(); m++)
+		if (m->Type >= trashhold)
+			return false;
+
+	return true;
+}
+									/*}}}*/
+// GlobalError::PushToStack						/*{{{*/
+void GlobalError::PushToStack() {
+	MsgStack pack(Messages, PendingFlag);
+	Stacks.push_back(pack);
+	Discard();
+}
+									/*}}}*/
+// GlobalError::RevertToStack						/*{{{*/
+void GlobalError::RevertToStack() {
+	Discard();
+	MsgStack pack = Stacks.back();
+	Messages = pack.Messages;
+	PendingFlag = pack.PendingFlag;
+	Stacks.pop_back();
+}
+									/*}}}*/
+// GlobalError::MergeWithStack						/*{{{*/
+void GlobalError::MergeWithStack() {
+	MsgStack pack = Stacks.back();
+	Messages.insert(Messages.begin(), pack.Messages.begin(), pack.Messages.end());
+	PendingFlag = PendingFlag || pack.PendingFlag;
+	Stacks.pop_back();
 }
 									/*}}}*/
diff --git a/apt-pkg/contrib/error.h b/apt-pkg/contrib/error.h
index 90747ff7e..e5517c2da 100644
--- a/apt-pkg/contrib/error.h
+++ b/apt-pkg/contrib/error.h
@@ -42,43 +42,248 @@
 
 #include <apt-pkg/macros.h>
 
+#include <iostream>
+#include <list>
 #include <string>
 
-class GlobalError
+#include <stdarg.h>
+
+class GlobalError							/*{{{*/
 {
-   struct Item
-   {
-      std::string Text;
-      bool Error;
-      Item *Next;
-   };
-   
-   Item *List;
-   bool PendingFlag;
-   void Insert(Item *I);
-   
-   public:
+public:									/*{{{*/
+	/** \brief a message can have one of following severity */
+	enum MsgType {
+		/** \brief Message will be printed instantly as it is likely that
+			this error will lead to a complete crash */
+		FATAL = 40,
+		/** \brief An error does hinder the correct execution and should be corrected */
+		ERROR = 30,
+		/** \brief indicates problem that can lead to errors later on */
+		WARNING = 20,
+		/** \brief deprecation warnings, old fallback behavior, … */
+		NOTICE = 10,
+		/** \brief for developers only in areas it is hard to print something directly */
+		DEBUG = 0
+	};
 
-   // Call to generate an error from a library call.
-   bool Errno(const char *Function,const char *Description,...) __like_printf_2 __cold;
-   bool WarningE(const char *Function,const char *Description,...) __like_printf_2 __cold;
+	/** \brief add a fatal error message with errno to the list
+	 *
+	 *  \param Function name of the function generating the error
+	 *  \param Description format string for the error message
+	 *
+	 *  \return \b false
+	 */
+	bool FatalE(const char *Function,const char *Description,...) __like_printf(3) __cold;
 
-   /* A warning should be considered less severe than an error, and may be
-      ignored by the client. */
-   bool Error(const char *Description,...) __like_printf_1 __cold;
-   bool Warning(const char *Description,...) __like_printf_1 __cold;
+	/** \brief add an Error message with errno to the list
+	 *
+	 *  \param Function name of the function generating the error
+	 *  \param Description format string for the error message
+	 *
+	 *  \return \b false
+	 */
+	bool Errno(const char *Function,const char *Description,...) __like_printf(3) __cold;
 
-   // Simple accessors
-   inline bool PendingError() {return PendingFlag;};
-   inline bool empty() {return List == 0;};
-   bool PopMessage(std::string &Text);
-   void Discard();
+	/** \brief add a warning message with errno to the list
+	 *
+	 *  A warning should be considered less severe than an error and
+	 *  may be ignored by the client.
+	 *
+	 *  \param Function Name of the function generates the warning.
+	 *  \param Description Format string for the warning message.
+	 *
+	 *  \return \b false
+	 */
+	bool WarningE(const char *Function,const char *Description,...) __like_printf(3) __cold;
 
-   // Usefull routine to dump to cerr
-   void DumpErrors();
-   
-   GlobalError();
+	/** \brief add a notice message with errno to the list
+	 *
+	 *  \param Function name of the function generating the error
+	 *  \param Description format string for the error message
+	 *
+	 *  \return \b false
+	 */
+	bool NoticeE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+
+	/** \brief add a debug message with errno to the list
+	 *
+	 *  \param Function name of the function generating the error
+	 *  \param Description format string for the error message
+	 *
+	 *  \return \b false
+	 */
+	bool DebugE(const char *Function,const char *Description,...) __like_printf(3) __cold;
+
+	/** \brief add an fatal error message to the list
+	 *
+	 *  Most of the stuff we consider as "error" is also "fatal" for
+	 *  the user as the application will not have the expected result,
+	 *  but a fatal message here means that it gets printed directly
+	 *  to stderr in addiction to adding it to the list as the error
+	 *  leads sometimes to crashes and a maybe duplicated message
+	 *  is better than "Segfault" as the only displayed text
+	 *
+	 *  \param Description Format string for the fatal error message.
+	 *
+	 *  \return \b false
+	 */
+	bool Fatal(const char *Description,...) __like_printf(2) __cold;
+
+	/** \brief add an Error message to the list
+	 *
+	 *  \param Description Format string for the error message.
+	 *
+	 *  \return \b false
+	 */
+	bool Error(const char *Description,...) __like_printf(2) __cold;
+
+	/** \brief add a warning message to the list
+	 *
+	 *  A warning should be considered less severe than an error and
+	 *  may be ignored by the client.
+	 *
+	 *  \param Description Format string for the message
+	 *
+	 *  \return \b false
+	 */
+	bool Warning(const char *Description,...) __like_printf(2) __cold;
+
+	/** \brief add a notice message to the list
+	 *
+	 *  A notice should be considered less severe than an error or a
+	 *  warning and can be ignored by the client without further problems
+	 *  for some times, but he should consider fixing the problem.
+	 *  This error type can be used for e.g. deprecation warnings of options.
+	 *
+	 *  \param Description Format string for the message
+	 *
+	 *  \return \b false
+	 */
+	bool Notice(const char *Description,...) __like_printf(2) __cold;
+
+	/** \brief add a debug message to the list
+	 *
+	 *  \param Description Format string for the message
+	 *
+	 *  \return \b false
+	 */
+	bool Debug(const char *Description,...) __like_printf(2) __cold;
+
+	/** \brief is an error in the list?
+	 *
+	 *  \return \b true if an error is included in the list, \b false otherwise
+	 */
+	inline bool PendingError() const {return PendingFlag;};
+
+	/** \brief is the list empty?
+	 *
+	 *  The default checks if the list is empty or contains only notices,
+	 *  if you want to check if also no notices happend set the parameter
+	 *  flag to \b false.
+	 *
+	 *  \param WithoutNotice does notices count, default is \b true, so no
+	 *
+	 *  \return \b true if an the list is empty, \b false otherwise
+	 */
+	bool empty(MsgType const &trashhold = WARNING) const;
+
+	/** \brief returns and removes the first (or last) message in the list
+	 *
+	 *  \param[out] Text message of the first/last item
+	 *
+	 *  \return \b true if the message was an error, \b false otherwise
+	 */
+	bool PopMessage(std::string &Text);
+
+	/** \brief clears the list of messages */
+	void Discard();
+
+	/** \brief outputs the list of messages to the given stream
+	 *
+	 *  Note that all messages are discarded, also the notices
+	 *  displayed or not.
+	 *
+	 *  \param[out] out output stream to write the messages in
+	 *  \param WithoutNotice output notices or not
+	 */
+	void DumpErrors(std::ostream &out, MsgType const &trashhold = WARNING,
+			bool const &mergeStack = true);
+
+	/** \brief dumps the list of messages to std::cerr
+	 *
+	 *  Note that all messages are discarded, also the notices
+	 *  displayed or not.
+	 *
+	 *  \param WithoutNotice print notices or not
+	 */
+	void inline DumpErrors(MsgType const &trashhold = WARNING) {
+		DumpErrors(std::cerr, trashhold);
+	}
+
+	/** \brief put the current Messages into the stack
+	 *
+	 *  All "old" messages will be pushed into a stack to
+	 *  them later back, but for now the Message query will be
+	 *  empty and performs as no messages were present before.
+	 *
+	 * The stack can be as deep as you want - all stack operations
+	 * will only operate on the last element in the stack.
+	 */
+	void PushToStack();
+
+	/** \brief throw away all current messages */
+	void RevertToStack();
+
+	/** \brief merge current and stack together */
+	void MergeWithStack();
+
+	/** \brief return the deep of the stack */
+	size_t StackCount() const {
+		return Stacks.size();
+	}
+
+	GlobalError();
+									/*}}}*/
+private:								/*{{{*/
+	struct Item {
+		std::string Text;
+		MsgType Type;
+
+		Item(char const *Text, MsgType const &Type) :
+			Text(Text), Type(Type) {};
+
+		friend std::ostream& operator<< (std::ostream &out, Item i) {
+			switch(i.Type) {
+			case FATAL:
+			case ERROR: out << "E"; break;
+			case WARNING: out << "W"; break;
+			case NOTICE: out << "N"; break;
+			case DEBUG: out << "D"; break;
+			}
+			return out << ": " << i.Text;
+		}
+	};
+
+	std::list<Item> Messages;
+	bool PendingFlag;
+
+	struct MsgStack {
+		std::list<Item> const Messages;
+		bool const PendingFlag;
+
+		MsgStack(std::list<Item> const &Messages, bool const &Pending) :
+			 Messages(Messages), PendingFlag(Pending) {};
+	};
+
+	std::list<MsgStack> Stacks;
+
+	bool InsertErrno(MsgType type, const char* Function,
+			 const char* Description, va_list &args);
+	bool Insert(MsgType type, const char* Description,
+			 va_list &args);
+									/*}}}*/
 };
+									/*}}}*/
 
 // The 'extra-ansi' syntax is used to help with collisions. 
 GlobalError *_GetErrorObj();
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index da32983f1..2a3b8a87d 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -11,6 +11,7 @@
    Most of this source is placed in the Public Domain, do with it what 
    you will
    It was originally written by Jason Gunthorpe <jgg@debian.org>.
+   FileFd gzip support added by Martin Pitt <martin.pitt@canonical.com>
    
    The exception is RunScripts() it is under the GPLv2
 
@@ -18,6 +19,7 @@
 									/*}}}*/
 // Include Files							/*{{{*/
 #include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/configuration.h>
@@ -26,6 +28,7 @@
 
 #include <cstdlib>
 #include <cstring>
+#include <cstdio>
 
 #include <iostream>
 #include <unistd.h>
@@ -197,16 +200,62 @@ bool FileExists(string File)
    return true;
 }
 									/*}}}*/
+// DirectoryExists - Check if a directory exists and is really one	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool DirectoryExists(string const &Path)
+{
+   struct stat Buf;
+   if (stat(Path.c_str(),&Buf) != 0)
+      return false;
+   return ((Buf.st_mode & S_IFDIR) != 0);
+}
+									/*}}}*/
+// CreateDirectory - poor man's mkdir -p guarded by a parent directory	/*{{{*/
+// ---------------------------------------------------------------------
+/* This method will create all directories needed for path in good old
+   mkdir -p style but refuses to do this if Parent is not a prefix of
+   this Path. Example: /var/cache/ and /var/cache/apt/archives are given,
+   so it will create apt/archives if /var/cache exists - on the other
+   hand if the parent is /var/lib the creation will fail as this path
+   is not a parent of the path to be generated. */
+bool CreateDirectory(string const &Parent, string const &Path)
+{
+   if (Parent.empty() == true || Path.empty() == true)
+      return false;
+
+   if (DirectoryExists(Path) == true)
+      return true;
+
+   if (DirectoryExists(Parent) == false)
+      return false;
+
+   // we are not going to create directories "into the blue"
+   if (Path.find(Parent, 0) != 0)
+      return false;
+
+   vector<string> const dirs = VectorizeString(Path.substr(Parent.size()), '/');
+   string progress = Parent;
+   for (vector<string>::const_iterator d = dirs.begin(); d != dirs.end(); ++d)
+   {
+      if (d->empty() == true)
+	 continue;
+
+      progress.append("/").append(*d);
+      if (DirectoryExists(progress) == true)
+	 continue;
+
+      if (mkdir(progress.c_str(), 0755) != 0)
+	 return false;
+   }
+   return true;
+}
+									/*}}}*/
 // GetListOfFilesInDir - returns a vector of files in the given dir	/*{{{*/
 // ---------------------------------------------------------------------
 /* If an extension is given only files with this extension are included
    in the returned vector, otherwise every "normal" file is included. */
 std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
-					bool const &SortList)
-{
-   return GetListOfFilesInDir(Dir, Ext, SortList, false);
-}
-std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
 					bool const &SortList, bool const &AllowNoExt)
 {
    std::vector<string> ext;
@@ -234,6 +283,7 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
    }
 
    std::vector<string> List;
+   Configuration::MatchAgainstConfig SilentIgnore("Dir::Ignore-Files-Silently");
    DIR *D = opendir(Dir.c_str());
    if (D == 0) 
    {
@@ -259,6 +309,7 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
 	    {
 	       if (Debug == true)
 		  std::clog << "Bad file: " << Ent->d_name << " → no extension" << std::endl;
+	       _error->Notice("Ignoring file '%s' in directory '%s' as it has no filename extension", Ent->d_name, Dir.c_str());
 	       continue;
 	    }
 	 }
@@ -266,6 +317,8 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
 	 {
 	    if (Debug == true)
 	       std::clog << "Bad file: " << Ent->d_name << " → bad extension »" << flExtension(Ent->d_name) << "«" << std::endl;
+	    if (SilentIgnore.Match(Ent->d_name) == false)
+	       _error->Notice("Ignoring file '%s' in directory '%s' as it has an invalid filename extension", Ent->d_name, Dir.c_str());
 	    continue;
 	 }
       }
@@ -604,13 +657,25 @@ bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms)
       case ReadOnly:
       iFd = open(FileName.c_str(),O_RDONLY);
       break;
+
+      case ReadOnlyGzip:
+      iFd = open(FileName.c_str(),O_RDONLY);
+      if (iFd > 0) {
+	 gz = gzdopen (iFd, "r");
+	 if (gz == NULL) {
+	     close (iFd);
+	     iFd = -1;
+	 }
+      }
+      break;
       
       case WriteEmpty:
       {
-	 struct stat Buf;
-	 if (lstat(FileName.c_str(),&Buf) == 0 && S_ISLNK(Buf.st_mode))
-	    unlink(FileName.c_str());
-	 iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_TRUNC,Perms);
+	 Flags |= Replace;
+	 char *name = strdup((FileName + ".XXXXXX").c_str());
+	 TemporaryFileName = string(mktemp(name));
+	 iFd = open(TemporaryFileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms);
+	 free(name);
 	 break;
       }
       
@@ -635,6 +700,24 @@ bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms)
    SetCloseExec(iFd,true);
    return true;
 }
+
+bool FileFd::OpenDescriptor(int Fd, OpenMode Mode, bool AutoClose)
+{
+   Close();
+   Flags = (AutoClose) ? FileFd::AutoClose : 0;
+   iFd = Fd;
+   if (Mode == ReadOnlyGzip) {
+      gz = gzdopen (iFd, "r");
+      if (gz == NULL) {
+	 if (AutoClose)
+	    close (iFd);
+	 return _error->Errno("gzdopen",_("Could not open file descriptor %d"),
+			      Fd);
+      }
+   }
+   this->FileName = "";
+   return true;
+}
 									/*}}}*/
 // FileFd::~File - Closes the file					/*{{{*/
 // ---------------------------------------------------------------------
@@ -658,7 +741,10 @@ bool FileFd::Read(void *To,unsigned long Size,unsigned long *Actual)
    
    do
    {
-      Res = read(iFd,To,Size);
+      if (gz != NULL)
+         Res = gzread(gz,To,Size);
+      else
+         Res = read(iFd,To,Size);
       if (Res < 0 && errno == EINTR)
 	 continue;
       if (Res < 0)
@@ -697,7 +783,10 @@ bool FileFd::Write(const void *From,unsigned long Size)
    errno = 0;
    do
    {
-      Res = write(iFd,From,Size);
+      if (gz != NULL)
+         Res = gzwrite(gz,From,Size);
+      else
+         Res = write(iFd,From,Size);
       if (Res < 0 && errno == EINTR)
 	 continue;
       if (Res < 0)
@@ -723,7 +812,12 @@ bool FileFd::Write(const void *From,unsigned long Size)
 /* */
 bool FileFd::Seek(unsigned long To)
 {
-   if (lseek(iFd,To,SEEK_SET) != (signed)To)
+   int res;
+   if (gz)
+      res = gzseek(gz,To,SEEK_SET);
+   else
+      res = lseek(iFd,To,SEEK_SET);
+   if (res != (signed)To)
    {
       Flags |= Fail;
       return _error->Error("Unable to seek to %lu",To);
@@ -737,7 +831,12 @@ bool FileFd::Seek(unsigned long To)
 /* */
 bool FileFd::Skip(unsigned long Over)
 {
-   if (lseek(iFd,Over,SEEK_CUR) < 0)
+   int res;
+   if (gz)
+      res = gzseek(gz,Over,SEEK_CUR);
+   else
+      res = lseek(iFd,Over,SEEK_CUR);
+   if (res < 0)
    {
       Flags |= Fail;
       return _error->Error("Unable to seek ahead %lu",Over);
@@ -751,6 +850,11 @@ bool FileFd::Skip(unsigned long Over)
 /* */
 bool FileFd::Truncate(unsigned long To)
 {
+   if (gz)
+   {
+      Flags |= Fail;
+      return _error->Error("Truncating gzipped files is not implemented (%s)", FileName.c_str());
+   }
    if (ftruncate(iFd,To) != 0)
    {
       Flags |= Fail;
@@ -765,7 +869,11 @@ bool FileFd::Truncate(unsigned long To)
 /* */
 unsigned long FileFd::Tell()
 {
-   off_t Res = lseek(iFd,0,SEEK_CUR);
+   off_t Res;
+   if (gz)
+     Res = gztell(gz);
+   else
+     Res = lseek(iFd,0,SEEK_CUR);
    if (Res == (off_t)-1)
       _error->Errno("lseek","Failed to determine the current file position");
    return Res;
@@ -776,6 +884,7 @@ unsigned long FileFd::Tell()
 /* */
 unsigned long FileFd::Size()
 {
+   //TODO: For gz, do we need the actual file size here or the uncompressed length?
    struct stat Buf;
    if (fstat(iFd,&Buf) != 0)
       return _error->Errno("fstat","Unable to determine the file size");
@@ -789,14 +898,33 @@ bool FileFd::Close()
 {
    bool Res = true;
    if ((Flags & AutoClose) == AutoClose)
-      if (iFd >= 0 && close(iFd) != 0)
-	 Res &= _error->Errno("close",_("Problem closing the file"));
+   {
+      if (gz != NULL) {
+	 int const e = gzclose(gz);
+	 // gzdopen() on empty files always fails with "buffer error" here, ignore that
+	 if (e != 0 && e != Z_BUF_ERROR)
+	    Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str());
+      } else
+	 if (iFd > 0 && close(iFd) != 0)
+	    Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str());
+   }
+
+   if ((Flags & Replace) == Replace && iFd >= 0) {
+      if (rename(TemporaryFileName.c_str(), FileName.c_str()) != 0)
+	 Res &= _error->Errno("rename",_("Problem renaming the file %s to %s"), TemporaryFileName.c_str(), FileName.c_str());
+
+      FileName = TemporaryFileName; // for the unlink() below.
+   }
+
    iFd = -1;
-   
+   gz = NULL;
+
    if ((Flags & Fail) == Fail && (Flags & DelOnFail) == DelOnFail &&
        FileName.empty() == false)
       if (unlink(FileName.c_str()) != 0)
-	 Res &= _error->WarningE("unlnk",_("Problem unlinking the file"));
+	 Res &= _error->WarningE("unlnk",_("Problem unlinking the file %s"), FileName.c_str());
+
+
    return Res;
 }
 									/*}}}*/
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 85a94898c..62705478d 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -21,10 +21,16 @@
 #ifndef PKGLIB_FILEUTL_H
 #define PKGLIB_FILEUTL_H
 
+#include <apt-pkg/macros.h>
 
 #include <string>
 #include <vector>
 
+#include <zlib.h>
+
+/* Define this for python-apt */
+#define APT_HAS_GZIP 1
+
 using std::string;
 
 class FileFd
@@ -33,12 +39,14 @@ class FileFd
    int iFd;
  
    enum LocalFlags {AutoClose = (1<<0),Fail = (1<<1),DelOnFail = (1<<2),
-                    HitEof = (1<<3)};
+                    HitEof = (1<<3), Replace = (1<<4) };
    unsigned long Flags;
    string FileName;
-   
+   string TemporaryFileName;
+   gzFile gz;
+
    public:
-   enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp};
+   enum OpenMode {ReadOnly,WriteEmpty,WriteExists,WriteAny,WriteTemp,ReadOnlyGzip};
    
    inline bool Read(void *To,unsigned long Size,bool AllowEof)
    {
@@ -55,6 +63,7 @@ class FileFd
    unsigned long Tell();
    unsigned long Size();
    bool Open(string FileName,OpenMode Mode,unsigned long Perms = 0666);
+   bool OpenDescriptor(int Fd, OpenMode Mode, bool AutoClose=false);
    bool Close();
    bool Sync();
    
@@ -69,12 +78,12 @@ class FileFd
    inline string &Name() {return FileName;};
    
    FileFd(string FileName,OpenMode Mode,unsigned long Perms = 0666) : iFd(-1), 
-            Flags(0) 
+            Flags(0), gz(NULL)
    {
       Open(FileName,Mode,Perms);
    };
-   FileFd(int Fd = -1) : iFd(Fd), Flags(AutoClose) {};
-   FileFd(int Fd,bool) : iFd(Fd), Flags(0) {};
+   FileFd(int Fd = -1) : iFd(Fd), Flags(AutoClose), gz(NULL) {};
+   FileFd(int Fd,bool) : iFd(Fd), Flags(0), gz(NULL) {};
    virtual ~FileFd();
 };
 
@@ -82,11 +91,10 @@ bool RunScripts(const char *Cnf);
 bool CopyFile(FileFd &From,FileFd &To);
 int GetLock(string File,bool Errors = true);
 bool FileExists(string File);
-// FIXME: next ABI-Break: merge the two method-headers
-std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
-					bool const &SortList);
+bool DirectoryExists(string const &Path) __attrib_const;
+bool CreateDirectory(string const &Parent, string const &Path);
 std::vector<string> GetListOfFilesInDir(string const &Dir, string const &Ext,
-					bool const &SortList, bool const &AllowNoExt);
+					bool const &SortList, bool const &AllowNoExt=false);
 std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> const &Ext,
 					bool const &SortList);
 string SafeGetCWD();
diff --git a/apt-pkg/contrib/macros.h b/apt-pkg/contrib/macros.h
index 9aeb77b81..62e7b65db 100644
--- a/apt-pkg/contrib/macros.h
+++ b/apt-pkg/contrib/macros.h
@@ -56,33 +56,35 @@
 
 // some nice optional GNUC features
 #if __GNUC__ >= 3
-        #define __must_check    __attribute__ ((warn_unused_result))
-        #define __deprecated    __attribute__ ((deprecated))
-        /* likely() and unlikely() can be used to mark boolean expressions
-           as (not) likely true which will help the compiler to optimise */
-        #define likely(x)       __builtin_expect (!!(x), 1)
-        #define unlikely(x)     __builtin_expect (!!(x), 0)
+	#define __must_check	__attribute__ ((warn_unused_result))
+	#define __deprecated	__attribute__ ((deprecated))
+	#define __attrib_const	__attribute__ ((__const__))
+	/* likely() and unlikely() can be used to mark boolean expressions
+	   as (not) likely true which will help the compiler to optimise */
+	#define likely(x)	__builtin_expect (!!(x), 1)
+	#define unlikely(x)	__builtin_expect (!!(x), 0)
 #else
-        #define __must_check    /* no warn_unused_result */
-        #define __deprecated    /* no deprecated */
-        #define likely(x)       (x)
-        #define unlikely(x)     (x)
+	#define __must_check	/* no warn_unused_result */
+	#define __deprecated	/* no deprecated */
+	#define __attrib_const	/* no const attribute */
+	#define likely(x)	(x)
+	#define unlikely(x)	(x)
 #endif
 
 // cold functions are unlikely() to be called
 #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4
-        #define __cold  __attribute__ ((__cold__))
+	#define __cold	__attribute__ ((__cold__))
+	#define __hot	__attribute__ ((__hot__))
 #else
-        #define __cold  /* no cold marker */
+	#define __cold	/* no cold marker */
+	#define __hot	/* no hot marker */
 #endif
 
 #ifdef __GNUG__
 // Methods have a hidden this parameter that is visible to this attribute
-	#define __like_printf_1 __attribute__ ((format (printf, 2, 3)))
-	#define __like_printf_2 __attribute__ ((format (printf, 3, 4)))
+	#define __like_printf(n)	__attribute__((format(printf, n, n + 1)))
 #else
-	#define __like_printf_1
-	#define __like_printf_2
+	#define __like_printf(n)	/* no like-printf */
 #endif
 
 #endif
diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 4d5fcf71e..69fb61fca 100644
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -27,6 +27,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <stdlib.h>
+#include <errno.h>
 
 #include <cstring>
    									/*}}}*/
@@ -35,7 +36,7 @@
 // ---------------------------------------------------------------------
 /* */
 MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
-                     Base(0)
+                     Base(0), SyncToFd(NULL)
 {
    if ((Flags & NoImmMap) != NoImmMap)
       Map(F);
@@ -45,7 +46,7 @@ MMap::MMap(FileFd &F,unsigned long Flags) : Flags(Flags), iSize(0),
 // ---------------------------------------------------------------------
 /* */
 MMap::MMap(unsigned long Flags) : Flags(Flags), iSize(0),
-                     Base(0)
+                     Base(0), SyncToFd(NULL)
 {
 }
 									/*}}}*/
@@ -78,7 +79,24 @@ bool MMap::Map(FileFd &Fd)
    // Map it.
    Base = mmap(0,iSize,Prot,Map,Fd.Fd(),0);
    if (Base == (void *)-1)
-      return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"),iSize);
+   {
+      if (errno == ENODEV || errno == EINVAL)
+      {
+	 // The filesystem doesn't support this particular kind of mmap.
+	 // So we allocate a buffer and read the whole file into it.
+	 int const dupped_fd = dup(Fd.Fd());
+	 if (dupped_fd == -1)
+	    return _error->Errno("mmap", _("Couldn't duplicate file descriptor %i"), Fd.Fd());
+
+	 Base = new unsigned char[iSize];
+	 SyncToFd = new FileFd (dupped_fd);
+	 if (!SyncToFd->Seek(0L) || !SyncToFd->Read(Base, iSize))
+	    return false;
+      }
+      else
+	 return _error->Errno("mmap",_("Couldn't make mmap of %lu bytes"),
+	                      iSize);
+     }
 
    return true;
 }
@@ -93,10 +111,19 @@ bool MMap::Close(bool DoSync)
    
    if (DoSync == true)
       Sync();
-   
-   if (munmap((char *)Base,iSize) != 0)
-      _error->Warning("Unable to munmap");
-   
+
+   if (SyncToFd != NULL)
+   {
+      delete[] (char *)Base;
+      delete SyncToFd;
+      SyncToFd = NULL;
+   }
+   else
+   {
+      if (munmap((char *)Base, iSize) != 0)
+	 _error->WarningE("mmap", _("Unable to close mmap"));
+   }
+
    iSize = 0;
    Base = 0;
    return true;
@@ -113,8 +140,18 @@ bool MMap::Sync()
    
 #ifdef _POSIX_SYNCHRONIZED_IO   
    if ((Flags & ReadOnly) != ReadOnly)
-      if (msync((char *)Base,iSize,MS_SYNC) < 0)
-	 return _error->Errno("msync","Unable to write mmap");
+   {
+      if (SyncToFd != NULL)
+      {
+	 if (!SyncToFd->Seek(0) || !SyncToFd->Write(Base, iSize))
+	    return false;
+      }
+      else
+      {
+	 if (msync((char *)Base, iSize, MS_SYNC) < 0)
+	    return _error->Errno("msync", _("Unable to synchronize mmap"));
+      }
+   }
 #endif   
    return true;
 }
@@ -130,8 +167,19 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
 #ifdef _POSIX_SYNCHRONIZED_IO
    unsigned long PSize = sysconf(_SC_PAGESIZE);
    if ((Flags & ReadOnly) != ReadOnly)
-      if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
-	 return _error->Errno("msync","Unable to write mmap");
+   {
+      if (SyncToFd != 0)
+      {
+	 if (!SyncToFd->Seek(0) ||
+	     !SyncToFd->Write (((char *)Base)+Start, Stop-Start))
+	    return false;
+      }
+      else
+      {
+	 if (msync((char *)Base+(int)(Start/PSize)*PSize,Stop - Start,MS_SYNC) < 0)
+	    return _error->Errno("msync", _("Unable to synchronize mmap"));
+      }
+   }
 #endif   
    return true;
 }
@@ -140,8 +188,10 @@ bool MMap::Sync(unsigned long Start,unsigned long Stop)
 // DynamicMMap::DynamicMMap - Constructor				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-DynamicMMap::DynamicMMap(FileFd &F,unsigned long Flags,unsigned long WorkSpace) :
-             MMap(F,Flags | NoImmMap), Fd(&F), WorkSpace(WorkSpace)
+DynamicMMap::DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &Workspace,
+			 unsigned long const &Grow, unsigned long const &Limit) :
+		MMap(F,Flags | NoImmMap), Fd(&F), WorkSpace(Workspace),
+		GrowFactor(Grow), Limit(Limit)
 {
    if (_error->PendingError() == true)
       return;
@@ -165,32 +215,48 @@ DynamicMMap::DynamicMMap(FileFd &F,unsigned long Flags,unsigned long WorkSpace)
 /* We try here to use mmap to reserve some space - this is much more
    cooler than the fallback solution to simply allocate a char array
    and could come in handy later than we are able to grow such an mmap */
-DynamicMMap::DynamicMMap(unsigned long Flags,unsigned long WorkSpace) :
-             MMap(Flags | NoImmMap | UnMapped), Fd(0), WorkSpace(WorkSpace)
+DynamicMMap::DynamicMMap(unsigned long Flags,unsigned long const &WorkSpace,
+			 unsigned long const &Grow, unsigned long const &Limit) :
+		MMap(Flags | NoImmMap | UnMapped), Fd(0), WorkSpace(WorkSpace),
+		GrowFactor(Grow), Limit(Limit)
 {
-   if (_error->PendingError() == true)
-      return;
+	if (_error->PendingError() == true)
+		return;
+
+	// disable Moveable if we don't grow
+	if (Grow == 0)
+		this->Flags &= ~Moveable;
+
+#ifndef __linux__
+	// kfreebsd doesn't have mremap, so we use the fallback
+	if ((this->Flags & Moveable) == Moveable)
+		this->Flags |= Fallback;
+#endif
 
 #ifdef _POSIX_MAPPED_FILES
-   // Set the permissions.
-   int Prot = PROT_READ;
-   int Map = MAP_PRIVATE | MAP_ANONYMOUS;
-   if ((Flags & ReadOnly) != ReadOnly)
-      Prot |= PROT_WRITE;
-   if ((Flags & Public) == Public)
-      Map = MAP_SHARED | MAP_ANONYMOUS;
+	if ((this->Flags & Fallback) != Fallback) {
+		// Set the permissions.
+		int Prot = PROT_READ;
+		int Map = MAP_PRIVATE | MAP_ANONYMOUS;
+		if ((this->Flags & ReadOnly) != ReadOnly)
+			Prot |= PROT_WRITE;
+		if ((this->Flags & Public) == Public)
+			Map = MAP_SHARED | MAP_ANONYMOUS;
 
-   // use anonymous mmap() to get the memory
-   Base = (unsigned char*) mmap(0, WorkSpace, Prot, Map, -1, 0);
+		// use anonymous mmap() to get the memory
+		Base = (unsigned char*) mmap(0, WorkSpace, Prot, Map, -1, 0);
 
-   if(Base == MAP_FAILED)
-      _error->Errno("DynamicMMap",_("Couldn't make mmap of %lu bytes"),WorkSpace);
-#else
-   // fallback to a static allocated space
-   Base = new unsigned char[WorkSpace];
-   memset(Base,0,WorkSpace);
+		if(Base == MAP_FAILED)
+			_error->Errno("DynamicMMap",_("Couldn't make mmap of %lu bytes"),WorkSpace);
+
+		iSize = 0;
+		return;
+	}
 #endif
-   iSize = 0;
+	// fallback to a static allocated space
+	Base = new unsigned char[WorkSpace];
+	memset(Base,0,WorkSpace);
+	iSize = 0;
 }
 									/*}}}*/
 // DynamicMMap::~DynamicMMap - Destructor				/*{{{*/
@@ -231,7 +297,7 @@ unsigned long DynamicMMap::RawAllocate(unsigned long Size,unsigned long Aln)
    {
       if(!Grow())
       {
-	 _error->Error(_("Dynamic MMap ran out of room. Please increase the size "
+	 _error->Fatal(_("Dynamic MMap ran out of room. Please increase the size "
 			 "of APT::Cache-Limit. Current value: %lu. (man 5 apt.conf)"), WorkSpace);
 	 return 0;
       }
@@ -248,7 +314,7 @@ unsigned long DynamicMMap::Allocate(unsigned long ItemSize)
    // Look for a matching pool entry
    Pool *I;
    Pool *Empty = 0;
-   for (I = Pools; I != Pools + PoolCount; I++)
+   for (I = Pools; I != Pools + PoolCount; ++I)
    {
       if (I->ItemSize == 0)
 	 Empty = I;
@@ -276,7 +342,11 @@ unsigned long DynamicMMap::Allocate(unsigned long ItemSize)
    {
       const unsigned long size = 20*1024;
       I->Count = size/ItemSize;
+      Pool* oldPools = Pools;
       Result = RawAllocate(size,ItemSize);
+      if (Pools != oldPools)
+	 I += Pools - oldPools;
+
       // Does the allocation failed ?
       if (Result == 0 && _error->PendingError())
 	 return 0;
@@ -299,7 +369,7 @@ unsigned long DynamicMMap::WriteString(const char *String,
    if (Len == (unsigned long)-1)
       Len = strlen(String);
 
-   unsigned long Result = RawAllocate(Len+1,0);
+   unsigned long const Result = RawAllocate(Len+1,0);
 
    if (Result == 0 && _error->PendingError())
       return 0;
@@ -311,30 +381,62 @@ unsigned long DynamicMMap::WriteString(const char *String,
 									/*}}}*/
 // DynamicMMap::Grow - Grow the mmap					/*{{{*/
 // ---------------------------------------------------------------------
-/* This method will try to grow the mmap we currently use. This doesn't
-   work most of the time because we can't move the mmap around in the
-   memory for now as this would require to adjust quite a lot of pointers
-   but why we should not at least try to grow it before we give up? */
-bool DynamicMMap::Grow()
-{
-#if defined(_POSIX_MAPPED_FILES) && defined(__linux__)
-   unsigned long newSize = WorkSpace + 1024*1024;
+/* This method is a wrapper around different methods to (try to) grow
+   a mmap (or our char[]-fallback). Encounterable environments:
+   1. Moveable + !Fallback + linux -> mremap with MREMAP_MAYMOVE
+   2. Moveable + !Fallback + !linux -> not possible (forbidden by constructor)
+   3. Moveable + Fallback -> realloc
+   4. !Moveable + !Fallback + linux -> mremap alone - which will fail in 99,9%
+   5. !Moveable + !Fallback + !linux -> not possible (forbidden by constructor)
+   6. !Moveable + Fallback -> not possible
+   [ While Moveable and Fallback stands for the equally named flags and
+     "linux" indicates a linux kernel instead of a freebsd kernel. ]
+   So what you can see here is, that a MMAP which want to be growable need
+   to be moveable to have a real chance but that this method will at least try
+   the nearly impossible 4 to grow it before it finally give up: Never say never. */
+bool DynamicMMap::Grow() {
+	if (Limit != 0 && WorkSpace >= Limit)
+		return _error->Error(_("Unable to increase the size of the MMap as the "
+		                       "limit of %lu bytes is already reached."), Limit);
+	if (GrowFactor <= 0)
+		return _error->Error(_("Unable to increase size of the MMap as automatic growing is disabled by user."));
 
-   if(Fd != 0)
-   {
-      Fd->Seek(newSize - 1);
-      char C = 0;
-      Fd->Write(&C,sizeof(C));
-   }
+	unsigned long const newSize = WorkSpace + GrowFactor;
 
-   Base = mremap(Base, WorkSpace, newSize, 0);
-   if(Base == MAP_FAILED)
-      return false;
+	if(Fd != 0) {
+		Fd->Seek(newSize - 1);
+		char C = 0;
+		Fd->Write(&C,sizeof(C));
+	}
 
-   WorkSpace = newSize;
-   return true;
+	unsigned long const poolOffset = Pools - ((Pool*) Base);
+
+	if ((Flags & Fallback) != Fallback) {
+#if defined(_POSIX_MAPPED_FILES) && defined(__linux__)
+   #ifdef MREMAP_MAYMOVE
+
+		if ((Flags & Moveable) == Moveable)
+			Base = mremap(Base, WorkSpace, newSize, MREMAP_MAYMOVE);
+		else
+   #endif
+			Base = mremap(Base, WorkSpace, newSize, 0);
+
+		if(Base == MAP_FAILED)
+			return false;
 #else
-   return false;
+		return false;
 #endif
+	} else {
+		if ((Flags & Moveable) != Moveable)
+			return false;
+
+		Base = realloc(Base, newSize);
+		if (Base == NULL)
+			return false;
+	}
+
+	Pools =(Pool*) Base + poolOffset;
+	WorkSpace = newSize;
+	return true;
 }
 									/*}}}*/
diff --git a/apt-pkg/contrib/mmap.h b/apt-pkg/contrib/mmap.h
index bde62217d..5ca951204 100644
--- a/apt-pkg/contrib/mmap.h
+++ b/apt-pkg/contrib/mmap.h
@@ -44,13 +44,18 @@ class MMap
    unsigned long iSize;
    void *Base;
 
+   // In case mmap can not be used, we keep a dup of the file
+   // descriptor that should have been mmaped so that we can write to
+   // the file in Sync().
+   FileFd *SyncToFd;
+
    bool Map(FileFd &Fd);
    bool Close(bool DoSync = true);
    
    public:
 
    enum OpenFlags {NoImmMap = (1<<0),Public = (1<<1),ReadOnly = (1<<2),
-                   UnMapped = (1<<3)};
+                   UnMapped = (1<<3), Moveable = (1<<4), Fallback = (1 << 5)};
       
    // Simple accessors
    inline operator void *() {return Base;};
@@ -82,6 +87,8 @@ class DynamicMMap : public MMap
    
    FileFd *Fd;
    unsigned long WorkSpace;
+   unsigned long const GrowFactor;
+   unsigned long const Limit;
    Pool *Pools;
    unsigned int PoolCount;
 
@@ -96,8 +103,10 @@ class DynamicMMap : public MMap
    inline unsigned long WriteString(const string &S) {return WriteString(S.c_str(),S.length());};
    void UsePools(Pool &P,unsigned int Count) {Pools = &P; PoolCount = Count;};
    
-   DynamicMMap(FileFd &F,unsigned long Flags,unsigned long WorkSpace = 2*1024*1024);
-   DynamicMMap(unsigned long Flags,unsigned long WorkSpace = 2*1024*1024);
+   DynamicMMap(FileFd &F,unsigned long Flags,unsigned long const &WorkSpace = 2*1024*1024,
+	       unsigned long const &Grow = 1024*1024, unsigned long const &Limit = 0);
+   DynamicMMap(unsigned long Flags,unsigned long const &WorkSpace = 2*1024*1024,
+	       unsigned long const &Grow = 1024*1024, unsigned long const &Limit = 0);
    virtual ~DynamicMMap();
 };
 
diff --git a/apt-pkg/contrib/strutl.cc b/apt-pkg/contrib/strutl.cc
index b54758632..ace74cb37 100644
--- a/apt-pkg/contrib/strutl.cc
+++ b/apt-pkg/contrib/strutl.cc
@@ -574,7 +574,7 @@ int stringcmp(string::const_iterator A,string::const_iterator AEnd,
 int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
 {
    for (; A != AEnd && B != BEnd; A++, B++)
-      if (toupper(*A) != toupper(*B))
+      if (tolower_ascii(*A) != tolower_ascii(*B))
 	 break;
 
    if (A == AEnd && B == BEnd)
@@ -583,7 +583,7 @@ int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
       return 1;
    if (B == BEnd)
       return -1;
-   if (toupper(*A) < toupper(*B))
+   if (tolower_ascii(*A) < tolower_ascii(*B))
       return -1;
    return 1;
 }
@@ -592,7 +592,7 @@ int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
 		  const char *B,const char *BEnd)
 {
    for (; A != AEnd && B != BEnd; A++, B++)
-      if (toupper(*A) != toupper(*B))
+      if (tolower_ascii(*A) != tolower_ascii(*B))
 	 break;
 
    if (A == AEnd && B == BEnd)
@@ -601,7 +601,7 @@ int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
       return 1;
    if (B == BEnd)
       return -1;
-   if (toupper(*A) < toupper(*B))
+   if (tolower_ascii(*A) < tolower_ascii(*B))
       return -1;
    return 1;
 }
@@ -609,7 +609,7 @@ int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
 		  string::const_iterator B,string::const_iterator BEnd)
 {
    for (; A != AEnd && B != BEnd; A++, B++)
-      if (toupper(*A) != toupper(*B))
+      if (tolower_ascii(*A) != tolower_ascii(*B))
 	 break;
 
    if (A == AEnd && B == BEnd)
@@ -618,7 +618,7 @@ int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
       return 1;
    if (B == BEnd)
       return -1;
-   if (toupper(*A) < toupper(*B))
+   if (tolower_ascii(*A) < tolower_ascii(*B))
       return -1;
    return 1;
 }
@@ -797,28 +797,28 @@ bool ReadMessages(int Fd, vector<string> &List)
 // MonthConv - Converts a month string into a number			/*{{{*/
 // ---------------------------------------------------------------------
 /* This was lifted from the boa webserver which lifted it from 'wn-v1.07'
-   Made it a bit more robust with a few touppers though. */
+   Made it a bit more robust with a few tolower_ascii though. */
 static int MonthConv(char *Month)
 {
-   switch (toupper(*Month)) 
+   switch (tolower_ascii(*Month)) 
    {
-      case 'A':
-      return toupper(Month[1]) == 'P'?3:7;
-      case 'D':
+      case 'a':
+      return tolower_ascii(Month[1]) == 'p'?3:7;
+      case 'd':
       return 11;
-      case 'F':
+      case 'f':
       return 1;
-      case 'J':
-      if (toupper(Month[1]) == 'A')
+      case 'j':
+      if (tolower_ascii(Month[1]) == 'a')
 	 return 0;
-      return toupper(Month[2]) == 'N'?5:6;
-      case 'M':
-      return toupper(Month[2]) == 'R'?2:4;
-      case 'N':
+      return tolower_ascii(Month[2]) == 'n'?5:6;
+      case 'm':
+      return tolower_ascii(Month[2]) == 'r'?2:4;
+      case 'n':
       return 10;
-      case 'O':
+      case 'o':
       return 9;
-      case 'S':
+      case 's':
       return 8;
 
       // Pretend it is January..
@@ -827,34 +827,70 @@ static int MonthConv(char *Month)
    }   
 }
 									/*}}}*/
-// timegm - Internal timegm function if gnu is not available		/*{{{*/
+// timegm - Internal timegm if the gnu version is not available		/*{{{*/
 // ---------------------------------------------------------------------
-/* Ripped this evil little function from wget - I prefer the use of 
-   GNU timegm if possible as this technique will have interesting problems
-   with leap seconds, timezones and other.
-   
-   Converts struct tm to time_t, assuming the data in tm is UTC rather
+/* Converts struct tm to time_t, assuming the data in tm is UTC rather
    than local timezone (mktime assumes the latter).
-   
-   Contributed by Roger Beeman <beeman@cisco.com>, with the help of
-   Mark Baushke <mdb@cisco.com> and the rest of the Gurus at CISCO. */
 
-/* Turned it into an autoconf check, because GNU is not the only thing which
-   can provide timegm. -- 2002-09-22, Joel Baker */
-
-#ifndef HAVE_TIMEGM // Now with autoconf!
+   This function is a nonstandard GNU extension that is also present on
+   the BSDs and maybe other systems. For others we follow the advice of
+   the manpage of timegm and use his portable replacement. */
+#ifndef HAVE_TIMEGM
 static time_t timegm(struct tm *t)
 {
-   time_t tl, tb;
-   
-   tl = mktime (t);
-   if (tl == -1)
-      return -1;
-   tb = mktime (gmtime (&tl));
-   return (tl <= tb ? (tl + (tl - tb)) : (tl - (tb - tl)));
+   char *tz = getenv("TZ");
+   setenv("TZ", "", 1);
+   tzset();
+   time_t ret = mktime(t);
+   if (tz)
+      setenv("TZ", tz, 1);
+   else
+      unsetenv("TZ");
+   tzset();
+   return ret;
 }
 #endif
 									/*}}}*/
+// FullDateToTime - Converts a HTTP1.1 full date strings into a time_t	/*{{{*/
+// ---------------------------------------------------------------------
+/* tries to parses a full date as specified in RFC2616 Section 3.3.1
+   with one exception: All timezones (%Z) are accepted but the protocol
+   says that it MUST be GMT, but this one is equal to UTC which we will
+   encounter from time to time (e.g. in Release files) so we accept all
+   here and just assume it is GMT (or UTC) later on */
+bool RFC1123StrToTime(const char* const str,time_t &time)
+{
+   struct tm Tm;
+   setlocale (LC_ALL,"C");
+   bool const invalid =
+   // Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
+      (strptime(str, "%a, %d %b %Y %H:%M:%S %Z", &Tm) == NULL &&
+   // Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
+       strptime(str, "%A, %d-%b-%y %H:%M:%S %Z", &Tm) == NULL &&
+   // Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
+       strptime(str, "%a %b %d %H:%M:%S %Y", &Tm) == NULL);
+   setlocale (LC_ALL,"");
+   if (invalid == true)
+      return false;
+
+   time = timegm(&Tm);
+   return true;
+}
+									/*}}}*/
+// FTPMDTMStrToTime - Converts a ftp modification date into a time_t	/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool FTPMDTMStrToTime(const char* const str,time_t &time)
+{
+   struct tm Tm;
+   // MDTM includes no whitespaces but recommend and ignored by strptime
+   if (strptime(str, "%Y %m %d %H %M %S", &Tm) == NULL)
+      return false;
+
+   time = timegm(&Tm);
+   return true;
+}
+									/*}}}*/
 // StrToTime - Converts a string into a time_t				/*{{{*/
 // ---------------------------------------------------------------------
 /* This handles all 3 populare time formats including RFC 1123, RFC 1036
@@ -1008,6 +1044,24 @@ bool TokSplitString(char Tok,char *Input,char **List,
    return true;
 }
 									/*}}}*/
+// VectorizeString - Split a string up into a vector of strings		/*{{{*/
+// ---------------------------------------------------------------------
+/* This can be used to split a given string up into a vector, so the
+   propose is the same as in the method above and this one is a bit slower
+   also, but the advantage is that we have an iteratable vector */
+vector<string> VectorizeString(string const &haystack, char const &split)
+{
+   string::const_iterator start = haystack.begin();
+   string::const_iterator end = start;
+   vector<string> exploded;
+   do {
+      for (; end != haystack.end() && *end != split; ++end);
+      exploded.push_back(string(start, end));
+      start = end + 1;
+   } while (end != haystack.end() && (++end) != haystack.end());
+   return exploded;
+}
+									/*}}}*/
 // RegexChoice - Simple regex list/list matcher				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -1123,10 +1177,13 @@ char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
 
 // tolower_ascii - tolower() function that ignores the locale		/*{{{*/
 // ---------------------------------------------------------------------
-/* */
-int tolower_ascii(int c)
+/* This little function is the most called method we have and tries
+   therefore to do the absolut minimum - and is noteable faster than
+   standard tolower/toupper and as a bonus avoids problems with different
+   locales - we only operate on ascii chars anyway. */
+int tolower_ascii(int const c)
 {
-   if (c >= 'A' and c <= 'Z')
+   if (c >= 'A' && c <= 'Z')
       return c + 32;
    return c;
 }
diff --git a/apt-pkg/contrib/strutl.h b/apt-pkg/contrib/strutl.h
index a92c0a78f..a457ff047 100644
--- a/apt-pkg/contrib/strutl.h
+++ b/apt-pkg/contrib/strutl.h
@@ -25,19 +25,12 @@
 #include <iostream>
 #include <time.h>
 
+#include "macros.h"
+
 using std::string;
 using std::vector;
 using std::ostream;
 
-#ifdef __GNUG__
-// Methods have a hidden this parameter that is visible to this attribute
-#define APT_FORMAT2 __attribute__ ((format (printf, 2, 3)))
-#define APT_FORMAT3 __attribute__ ((format (printf, 3, 4)))
-#else
-#define APT_FORMAT2
-#define APT_FORMAT3
-#endif    
-
 bool UTF8ToCodeset(const char *codeset, const string &orig, string *dest);
 char *_strstrip(char *String);
 char *_strtabexpand(char *String,size_t Len);
@@ -52,7 +45,9 @@ string Base64Encode(const string &Str);
 string OutputInDepth(const unsigned long Depth, const char* Separator="  ");
 string URItoFileName(const string &URI);
 string TimeRFC1123(time_t Date);
-bool StrToTime(const string &Val,time_t &Result);
+bool RFC1123StrToTime(const char* const str,time_t &time) __must_check;
+bool FTPMDTMStrToTime(const char* const str,time_t &time) __must_check;
+__deprecated bool StrToTime(const string &Val,time_t &Result);
 string LookupTag(const string &Message,const char *Tag,const char *Default = 0);
 int StringToBool(const string &Text,int Default = -1);
 bool ReadMessages(int Fd, vector<string> &List);
@@ -60,11 +55,12 @@ bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base = 0)
 bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length);
 bool TokSplitString(char Tok,char *Input,char **List,
 		    unsigned long ListMax);
-void ioprintf(ostream &out,const char *format,...) APT_FORMAT2;
-void strprintf(string &out,const char *format,...) APT_FORMAT2;
-char *safe_snprintf(char *Buffer,char *End,const char *Format,...) APT_FORMAT3;
+vector<string> VectorizeString(string const &haystack, char const &split) __attrib_const;
+void ioprintf(ostream &out,const char *format,...) __like_printf(2);
+void strprintf(string &out,const char *format,...) __like_printf(2);
+char *safe_snprintf(char *Buffer,char *End,const char *Format,...) __like_printf(3);
 bool CheckDomainList(const string &Host, const string &List);
-int tolower_ascii(int c);
+int tolower_ascii(int const c) __attrib_const __hot;
 
 #define APT_MKSTRCMP(name,func) \
 inline int name(const char *A,const char *B) {return func(A,A+strlen(A),B,B+strlen(B));}; \
@@ -144,6 +140,4 @@ struct RxChoiceList
 unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
 		      const char **ListEnd);
 
-#undef APT_FORMAT2
-
 #endif
diff --git a/apt-pkg/contrib/weakptr.h b/apt-pkg/contrib/weakptr.h
new file mode 100644
index 000000000..5158e393c
--- /dev/null
+++ b/apt-pkg/contrib/weakptr.h
@@ -0,0 +1,62 @@
+/* weakptr.h - An object which supports weak pointers.
+ *
+ * Copyright (C) 2010 Julian Andres Klode <jak@debian.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+
+#ifndef WEAK_POINTER_H
+#define WEAK_POINTER_H
+
+#include <set>
+/**
+ * Class for objects providing support for weak pointers.
+ *
+ * This class allows for the registration of certain pointers as weak,
+ * which will cause them to be set to NULL when the destructor of the
+ * object is called.
+ */
+class WeakPointable {
+private:
+    std::set<WeakPointable**> pointers;
+
+public:
+
+    /**
+     * Add a new weak pointer.
+     */
+    inline void AddWeakPointer(WeakPointable** weakptr) {
+       pointers.insert(weakptr);
+    }
+
+    /**
+     * Remove the weak pointer from the list of weak pointers.
+     */
+    inline void RemoveWeakPointer(WeakPointable **weakptr) {
+       pointers.erase(weakptr);
+    }
+
+    /**
+     * Deconstruct the object, set all weak pointers to NULL.
+     */
+    ~WeakPointable() {
+        std::set<WeakPointable**>::iterator iter = pointers.begin();
+        while (iter != pointers.end())
+            **(iter++) = NULL;
+    }
+};
+
+#endif // WEAK_POINTER_H
diff --git a/apt-pkg/deb/debindexfile.cc b/apt-pkg/deb/debindexfile.cc
index 3b11ad2eb..ba5b3f266 100644
--- a/apt-pkg/deb/debindexfile.cc
+++ b/apt-pkg/deb/debindexfile.cc
@@ -63,9 +63,13 @@ string debSourcesIndex::SourceInfo(pkgSrcRecords::Parser const &Record,
 /* */
 pkgSrcRecords::Parser *debSourcesIndex::CreateSrcParser() const
 {
-   string SourcesURI = URItoFileName(IndexURI("Sources"));
-   return new debSrcRecordParser(_config->FindDir("Dir::State::lists") +
-				 SourcesURI,this);
+   string SourcesURI = _config->FindDir("Dir::State::lists") + 
+      URItoFileName(IndexURI("Sources"));
+   string SourcesURIgzip = SourcesURI + ".gz";
+   if (!FileExists(SourcesURI) && FileExists(SourcesURIgzip))
+      SourcesURI = SourcesURIgzip;
+
+   return new debSrcRecordParser(SourcesURI,this);
 }
 									/*}}}*/
 // SourcesIndex::Describe - Give a descriptive path to the index	/*{{{*/
@@ -106,8 +110,14 @@ string debSourcesIndex::Info(const char *Type) const
 /* */
 inline string debSourcesIndex::IndexFile(const char *Type) const
 {
-   return URItoFileName(IndexURI(Type));
+   string s = URItoFileName(IndexURI(Type));
+   string sgzip = s + ".gz";
+   if (!FileExists(s) && FileExists(sgzip))
+       return sgzip;
+   else
+       return s;
 }
+
 string debSourcesIndex::IndexURI(const char *Type) const
 {
    string Res;
@@ -149,9 +159,12 @@ unsigned long debSourcesIndex::Size() const
 // PackagesIndex::debPackagesIndex - Contructor				/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-debPackagesIndex::debPackagesIndex(string URI,string Dist,string Section,bool Trusted) : 
-                  pkgIndexFile(Trusted), URI(URI), Dist(Dist), Section(Section)
+debPackagesIndex::debPackagesIndex(string const &URI, string const &Dist, string const &Section,
+					bool const &Trusted, string const &Arch) :
+                  pkgIndexFile(Trusted), URI(URI), Dist(Dist), Section(Section), Architecture(Arch)
 {
+	if (Architecture == "native")
+		Architecture = _config->Find("APT::Architecture");
 }
 									/*}}}*/
 // PackagesIndex::ArchiveInfo - Short version of the archive url	/*{{{*/
@@ -171,6 +184,8 @@ string debPackagesIndex::ArchiveInfo(pkgCache::VerIterator Ver) const
    Res += " ";
    Res += Ver.ParentPkg().Name();
    Res += " ";
+   if (Dist[Dist.size() - 1] != '/')
+      Res.append(Ver.Arch()).append(" ");
    Res += Ver.VerStr();
    return Res;
 }
@@ -204,6 +219,8 @@ string debPackagesIndex::Info(const char *Type) const
    else
       Info += Dist + '/' + Section;   
    Info += " ";
+   if (Dist[Dist.size() - 1] != '/')
+      Info += Architecture + " ";
    Info += Type;
    return Info;
 }
@@ -213,7 +230,12 @@ string debPackagesIndex::Info(const char *Type) const
 /* */
 inline string debPackagesIndex::IndexFile(const char *Type) const
 {
-   return _config->FindDir("Dir::State::lists") + URItoFileName(IndexURI(Type));
+   string s =_config->FindDir("Dir::State::lists") + URItoFileName(IndexURI(Type));
+   string sgzip = s + ".gz";
+   if (!FileExists(s) && FileExists(sgzip))
+       return sgzip;
+   else
+       return s;
 }
 string debPackagesIndex::IndexURI(const char *Type) const
 {
@@ -227,7 +249,7 @@ string debPackagesIndex::IndexURI(const char *Type) const
    }
    else
       Res = URI + "dists/" + Dist + '/' + Section +
-      "/binary-" + _config->Find("APT::Architecture") + '/';
+      "/binary-" + Architecture + '/';
    
    Res += Type;
    return Res;
@@ -255,21 +277,23 @@ unsigned long debPackagesIndex::Size() const
 // PackagesIndex::Merge - Load the index file into a cache		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debPackagesIndex::Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const
+bool debPackagesIndex::Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const
 {
    string PackageFile = IndexFile("Packages");
-   FileFd Pkg(PackageFile,FileFd::ReadOnly);
-   debListParser Parser(&Pkg);
+   FileFd Pkg(PackageFile,FileFd::ReadOnlyGzip);
+   debListParser Parser(&Pkg, Architecture);
+
    if (_error->PendingError() == true)
       return _error->Error("Problem opening %s",PackageFile.c_str());
-   
-   Prog.SubProgress(0,Info("Packages"));
+   if (Prog != NULL)
+      Prog->SubProgress(0,Info("Packages"));
    ::URI Tmp(URI);
    if (Gen.SelectFile(PackageFile,Tmp.Host,*this) == false)
       return _error->Error("Problem with SelectFile %s",PackageFile.c_str());
 
    // Store the IMS information
    pkgCache::PkgFileIterator File = Gen.GetCurFile();
+   pkgCacheGenerator::Dynamic<pkgCache::PkgFileIterator> DynFile(File);
    struct stat St;
    if (fstat(Pkg.Fd(),&St) != 0)
       return _error->Errno("fstat","Failed to stat");
@@ -329,17 +353,23 @@ pkgCache::PkgFileIterator debPackagesIndex::FindInCache(pkgCache &Cache) const
 // TranslationsIndex::debTranslationsIndex - Contructor			/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-debTranslationsIndex::debTranslationsIndex(string URI,string Dist,string Section) : 
-                  pkgIndexFile(true), URI(URI), Dist(Dist), Section(Section)
-{
-}
+debTranslationsIndex::debTranslationsIndex(string URI,string Dist,string Section,
+						char const * const Translation) :
+			pkgIndexFile(true), URI(URI), Dist(Dist), Section(Section),
+				Language(Translation)
+{}
 									/*}}}*/
 // TranslationIndex::Trans* - Return the URI to the translation files	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
 inline string debTranslationsIndex::IndexFile(const char *Type) const
 {
-   return _config->FindDir("Dir::State::lists") + URItoFileName(IndexURI(Type));
+   string s =_config->FindDir("Dir::State::lists") + URItoFileName(IndexURI(Type));
+   string sgzip = s + ".gz";
+   if (!FileExists(s) && FileExists(sgzip))
+       return sgzip;
+   else
+       return s;
 }
 string debTranslationsIndex::IndexURI(const char *Type) const
 {
@@ -365,8 +395,8 @@ string debTranslationsIndex::IndexURI(const char *Type) const
 bool debTranslationsIndex::GetIndexes(pkgAcquire *Owner) const
 {
    if (TranslationsAvailable()) {
-     string TranslationFile = "Translation-" + LanguageCode();
-     new pkgAcqIndexTrans(Owner, IndexURI(LanguageCode().c_str()),
+     string const TranslationFile = string("Translation-").append(Language);
+     new pkgAcqIndexTrans(Owner, IndexURI(Language),
 			  Info(TranslationFile.c_str()),
 			  TranslationFile);
    }
@@ -385,7 +415,7 @@ string debTranslationsIndex::Describe(bool Short) const
       snprintf(S,sizeof(S),"%s",Info(TranslationFile().c_str()).c_str());
    else
       snprintf(S,sizeof(S),"%s (%s)",Info(TranslationFile().c_str()).c_str(),
-	       IndexFile(LanguageCode().c_str()).c_str());
+	       IndexFile(Language).c_str());
    return S;
 }
 									/*}}}*/
@@ -407,20 +437,20 @@ string debTranslationsIndex::Info(const char *Type) const
    return Info;
 }
 									/*}}}*/
-bool debTranslationsIndex::HasPackages() const
+bool debTranslationsIndex::HasPackages() const				/*{{{*/
 {
    if(!TranslationsAvailable())
       return false;
    
-   return FileExists(IndexFile(LanguageCode().c_str()));
+   return FileExists(IndexFile(Language));
 }
-
+									/*}}}*/
 // TranslationsIndex::Exists - Check if the index is available		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
 bool debTranslationsIndex::Exists() const
 {
-   return FileExists(IndexFile(LanguageCode().c_str()));
+   return FileExists(IndexFile(Language));
 }
 									/*}}}*/
 // TranslationsIndex::Size - Return the size of the index		/*{{{*/
@@ -429,7 +459,7 @@ bool debTranslationsIndex::Exists() const
 unsigned long debTranslationsIndex::Size() const
 {
    struct stat S;
-   if (stat(IndexFile(LanguageCode().c_str()).c_str(),&S) != 0)
+   if (stat(IndexFile(Language).c_str(),&S) != 0)
       return 0;
    return S.st_size;
 }
@@ -437,18 +467,19 @@ unsigned long debTranslationsIndex::Size() const
 // TranslationsIndex::Merge - Load the index file into a cache		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debTranslationsIndex::Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const
+bool debTranslationsIndex::Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const
 {
    // Check the translation file, if in use
-   string TranslationFile = IndexFile(LanguageCode().c_str());
+   string TranslationFile = IndexFile(Language);
    if (TranslationsAvailable() && FileExists(TranslationFile))
    {
-     FileFd Trans(TranslationFile,FileFd::ReadOnly);
+     FileFd Trans(TranslationFile,FileFd::ReadOnlyGzip);
      debListParser TransParser(&Trans);
      if (_error->PendingError() == true)
        return false;
      
-     Prog.SubProgress(0, Info(TranslationFile.c_str()));
+     if (Prog != NULL)
+	Prog->SubProgress(0, Info(TranslationFile.c_str()));
      if (Gen.SelectFile(TranslationFile,string(),*this) == false)
        return _error->Error("Problem with SelectFile %s",TranslationFile.c_str());
 
@@ -472,7 +503,7 @@ bool debTranslationsIndex::Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const
 /* */
 pkgCache::PkgFileIterator debTranslationsIndex::FindInCache(pkgCache &Cache) const
 {
-   string FileName = IndexFile(LanguageCode().c_str());
+   string FileName = IndexFile(Language);
    
    pkgCache::PkgFileIterator File = Cache.FileBegin();
    for (; File.end() == false; File++)
@@ -521,16 +552,17 @@ unsigned long debStatusIndex::Size() const
 // StatusIndex::Merge - Load the index file into a cache		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debStatusIndex::Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const
+bool debStatusIndex::Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const
 {
-   FileFd Pkg(File,FileFd::ReadOnly);
+   FileFd Pkg(File,FileFd::ReadOnlyGzip);
    if (_error->PendingError() == true)
       return false;
    debListParser Parser(&Pkg);
    if (_error->PendingError() == true)
       return false;
-   
-   Prog.SubProgress(0,File);
+
+   if (Prog != NULL)
+      Prog->SubProgress(0,File);
    if (Gen.SelectFile(File,string(),*this,pkgCache::Flag::NotSource) == false)
       return _error->Error("Problem with SelectFile %s",File.c_str());
 
diff --git a/apt-pkg/deb/debindexfile.h b/apt-pkg/deb/debindexfile.h
index b0012c96b..b5085992d 100644
--- a/apt-pkg/deb/debindexfile.h
+++ b/apt-pkg/deb/debindexfile.h
@@ -35,7 +35,7 @@ class debStatusIndex : public pkgIndexFile
    virtual bool Exists() const;
    virtual bool HasPackages() const {return true;};
    virtual unsigned long Size() const;
-   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const;
+   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const;
    virtual pkgCache::PkgFileIterator FindInCache(pkgCache &Cache) const;
 
    debStatusIndex(string File);
@@ -46,6 +46,7 @@ class debPackagesIndex : public pkgIndexFile
    string URI;
    string Dist;
    string Section;
+   string Architecture;
 
    string Info(const char *Type) const;
    string IndexFile(const char *Type) const;
@@ -66,10 +67,11 @@ class debPackagesIndex : public pkgIndexFile
    virtual bool Exists() const;
    virtual bool HasPackages() const {return true;};
    virtual unsigned long Size() const;
-   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const;
+   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const;
    virtual pkgCache::PkgFileIterator FindInCache(pkgCache &Cache) const;
 
-   debPackagesIndex(string URI,string Dist,string Section,bool Trusted);
+   debPackagesIndex(string const &URI, string const &Dist, string const &Section,
+			bool const &Trusted, string const &Arch = "native");
 };
 
 class debTranslationsIndex : public pkgIndexFile
@@ -77,12 +79,13 @@ class debTranslationsIndex : public pkgIndexFile
    string URI;
    string Dist;
    string Section;
+   const char * const Language;
    
    string Info(const char *Type) const;
    string IndexFile(const char *Type) const;
    string IndexURI(const char *Type) const;
 
-   inline string TranslationFile() const {return "Translation-" + LanguageCode();};
+   inline string TranslationFile() const {return string("Translation-").append(Language);};
 
    public:
    
@@ -96,10 +99,10 @@ class debTranslationsIndex : public pkgIndexFile
    virtual bool Exists() const;
    virtual bool HasPackages() const;
    virtual unsigned long Size() const;
-   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress &Prog) const;
+   virtual bool Merge(pkgCacheGenerator &Gen,OpProgress *Prog) const;
    virtual pkgCache::PkgFileIterator FindInCache(pkgCache &Cache) const;
 
-   debTranslationsIndex(string URI,string Dist,string Section);
+   debTranslationsIndex(string URI,string Dist,string Section, char const * const Language);
 };
 
 class debSourcesIndex : public pkgIndexFile
diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 25b0953e0..5fb737970 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -13,11 +13,13 @@
 #include <apt-pkg/deblistparser.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/crc-16.h>
 #include <apt-pkg/md5.h>
 #include <apt-pkg/macros.h>
 
+#include <fnmatch.h>
 #include <ctype.h>
 									/*}}}*/
 
@@ -30,10 +32,15 @@ static debListParser::WordList PrioList[] = {{"important",pkgCache::State::Impor
 
 // ListParser::debListParser - Constructor				/*{{{*/
 // ---------------------------------------------------------------------
-/* */
-debListParser::debListParser(FileFd *File) : Tags(File)
-{
-   Arch = _config->Find("APT::architecture");
+/* Provide an architecture and only this one and "all" will be accepted
+   in Step(), if no Architecture is given we will accept every arch
+   we would accept in general with checkArchitecture() */
+debListParser::debListParser(FileFd *File, string const &Arch) : Tags(File),
+				Arch(Arch) {
+   if (Arch == "native")
+      this->Arch = _config->Find("APT::Architecture");
+   Architectures = APT::Configuration::getArchitectures();
+   MultiArchEnabled = Architectures.size() > 1;
 }
 									/*}}}*/
 // ListParser::UniqFindTagWrite - Find the tag and write a unq string	/*{{{*/
@@ -51,14 +58,41 @@ unsigned long debListParser::UniqFindTagWrite(const char *Tag)
 // ListParser::Package - Return the package name			/*{{{*/
 // ---------------------------------------------------------------------
 /* This is to return the name of the package this section describes */
-string debListParser::Package()
-{
-   string Result = Section.FindS("Package");
-   if (Result.empty() == true)
+string debListParser::Package() {
+   string const Result = Section.FindS("Package");
+   if(unlikely(Result.empty() == true))
       _error->Error("Encountered a section with no Package: header");
    return Result;
 }
 									/*}}}*/
+// ListParser::Architecture - Return the package arch			/*{{{*/
+// ---------------------------------------------------------------------
+/* This will return the Architecture of the package this section describes
+   Note that architecture "all" packages will get the architecture of the
+   Packages file parsed here. */
+string debListParser::Architecture() {
+   string const Result = Section.FindS("Architecture");
+   if (Result.empty() == true || Result == "all")
+   {
+      if (Arch.empty() == true)
+	 /* FIXME: this is a problem for installed arch all
+	    packages as we don't know from which arch this
+	    package was installed - and therefore which
+	    dependency this package resolves. */
+	 return _config->Find("APT::Architecture");
+      else
+	 return Arch;
+   }
+   return Result;
+}
+									/*}}}*/
+// ListParser::ArchitectureAll						/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool debListParser::ArchitectureAll() {
+   return Section.FindS("Architecture") == "all";
+}
+									/*}}}*/
 // ListParser::Version - Return the version string			/*{{{*/
 // ---------------------------------------------------------------------
 /* This is to return the string describing the version in debian form,
@@ -72,17 +106,39 @@ string debListParser::Version()
 // ListParser::NewVersion - Fill in the version structure		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debListParser::NewVersion(pkgCache::VerIterator Ver)
+bool debListParser::NewVersion(pkgCache::VerIterator &Ver)
 {
    // Parse the section
    Ver->Section = UniqFindTagWrite("Section");
-   Ver->Arch = UniqFindTagWrite("Architecture");
-   
+
+   // Parse multi-arch
+   if (Section.FindS("Architecture") == "all")
+      /* Arch all packages can't have a Multi-Arch field,
+         but we need a special treatment for them nonetheless */
+      Ver->MultiArch = pkgCache::Version::All;
+   else
+   {
+      string const MultiArch = Section.FindS("Multi-Arch");
+      if (MultiArch.empty() == true)
+	 Ver->MultiArch = pkgCache::Version::None;
+      else if (MultiArch == "same")
+	 Ver->MultiArch = pkgCache::Version::Same;
+      else if (MultiArch == "foreign")
+	 Ver->MultiArch = pkgCache::Version::Foreign;
+      else if (MultiArch == "allowed")
+	 Ver->MultiArch = pkgCache::Version::Allowed;
+      else
+      {
+	 _error->Warning("Unknown Multi-Arch type »%s« for package »%s«",
+			MultiArch.c_str(), Section.FindS("Package").c_str());
+	 Ver->MultiArch = pkgCache::Version::None;
+      }
+   }
+
    // Archive Size
-   Ver->Size = (unsigned)Section.FindI("Size");
-   
+   Ver->Size = Section.FindULL("Size");
    // Unpacked Size (in K)
-   Ver->InstalledSize = (unsigned)Section.FindI("Installed-Size");
+   Ver->InstalledSize = Section.FindULL("Installed-Size");
    Ver->InstalledSize *= 1024;
 
    // Priority
@@ -94,6 +150,24 @@ bool debListParser::NewVersion(pkgCache::VerIterator Ver)
 	 Ver->Priority = pkgCache::State::Extra;
    }
 
+   if (Ver->MultiArch == pkgCache::Version::All)
+   {
+      /* We maintain a "pseudo" arch=all package for architecture all versions
+	 on which these versions can depend on. This pseudo package is many used
+	 for downloading/installing: The other pseudo-packages will degenerate
+	 to a NOP in the download/install step - this package will ensure that
+	 it is downloaded only one time and installed only one time -- even if
+	 the architecture bound versions coming in and out on regular basis. */
+      if (strcmp(Ver.Arch(true),"all") == 0)
+	 return true;
+      else if (MultiArchEnabled == true)
+      {
+	 // our pseudo packages have no size to not confuse the fetcher
+	 Ver->Size = 0;
+	 Ver->InstalledSize = 0;
+      }
+   }
+
    if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
       return false;
    if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)
@@ -128,10 +202,11 @@ bool debListParser::NewVersion(pkgCache::VerIterator Ver)
    only describe package properties */
 string debListParser::Description()
 {
-   if (DescriptionLanguage().empty())
+   string const lang = DescriptionLanguage();
+   if (lang.empty())
       return Section.FindS("Description");
    else
-      return Section.FindS(("Description-" + pkgIndexFile::LanguageCode()).c_str());
+      return Section.FindS(string("Description-").append(lang).c_str());
 }
                                                                         /*}}}*/
 // ListParser::DescriptionLanguage - Return the description lang string	/*{{{*/
@@ -141,7 +216,16 @@ string debListParser::Description()
    assumed to describe original description. */
 string debListParser::DescriptionLanguage()
 {
-   return Section.FindS("Description").empty() ? pkgIndexFile::LanguageCode() : "";
+   if (Section.FindS("Description").empty() == false)
+      return "";
+
+   std::vector<string> const lang = APT::Configuration::getLanguages();
+   for (std::vector<string>::const_iterator l = lang.begin();
+	l != lang.end(); l++)
+      if (Section.FindS(string("Description-").append(*l).c_str()).empty() == false)
+	 return *l;
+
+   return "";
 }
                                                                         /*}}}*/
 // ListParser::Description - Return the description_md5 MD5SumValue	/*{{{*/
@@ -167,13 +251,21 @@ MD5SumValue debListParser::Description_md5()
 // ---------------------------------------------------------------------
 /* This is called to update the package with any new information 
    that might be found in the section */
-bool debListParser::UsePackage(pkgCache::PkgIterator Pkg,
-			       pkgCache::VerIterator Ver)
+bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg,
+			       pkgCache::VerIterator &Ver)
 {
    if (Pkg->Section == 0)
       Pkg->Section = UniqFindTagWrite("Section");
-   if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
-      return false;
+
+   // Packages which are not from the "native" arch doesn't get the essential flag
+   // in the default "native" mode - it is also possible to mark "all" or "none".
+   // The "installed" mode is handled by ParseStatus(), See #544481 and friends.
+   string const static myArch = _config->Find("APT::Architecture");
+   string const static essential = _config->Find("pkgCacheGen::Essential", "native");
+   if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) ||
+       essential == "all")
+      if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
+	 return false;
    if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)
       return false;
 
@@ -240,14 +332,20 @@ unsigned short debListParser::VersionHash()
    Some of the above are obsolete (I think?) flag = hold-* and 
    status = post-inst-failed, removal-failed at least.
  */
-bool debListParser::ParseStatus(pkgCache::PkgIterator Pkg,
-				pkgCache::VerIterator Ver)
+bool debListParser::ParseStatus(pkgCache::PkgIterator &Pkg,
+				pkgCache::VerIterator &Ver)
 {
    const char *Start;
    const char *Stop;
    if (Section.Find("Status",Start,Stop) == false)
       return true;
-   
+
+   // UsePackage() is responsible for setting the flag in the default case
+   bool const static essential = _config->Find("pkgCacheGen::Essential", "") == "installed";
+   if (essential == true &&
+       Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
+      return false;
+
    // Isolate the first word
    const char *I = Start;
    for(; I < Stop && *I != ' '; I++);
@@ -376,6 +474,20 @@ const char *debListParser::ConvertRelation(const char *I,unsigned int &Op)
    return I;
 }
 
+/*
+ * CompleteArch:
+ *
+ * The complete architecture, consisting of <kernel>-<cpu>.
+ */
+static string CompleteArch(std::string& arch) {
+    if (arch == "armel")              return "linux-arm";
+    if (arch == "lpia")               return "linux-i386";
+    if (arch == "powerpcspe")         return "linux-powerpc";
+    if (arch == "uclibc-linux-armel") return "linux-arm";
+    if (arch == "uclinux-armel")      return "uclinux-arm";
+
+    return (arch.find("-") != string::npos) ? arch : "linux-" + arch;
+}
 									/*}}}*/
 // ListParser::ParseDepends - Parse a dependency element		/*{{{*/
 // ---------------------------------------------------------------------
@@ -383,7 +495,8 @@ const char *debListParser::ConvertRelation(const char *I,unsigned int &Op)
    bit by bit. */
 const char *debListParser::ParseDepends(const char *Start,const char *Stop,
 					string &Package,string &Ver,
-					unsigned int &Op, bool ParseArchFlags)
+					unsigned int &Op, bool const &ParseArchFlags,
+					bool const &StripMultiArch)
 {
    // Strip off leading space
    for (;Start != Stop && isspace(*Start) != 0; Start++);
@@ -402,7 +515,14 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
    
    // Stash the package name
    Package.assign(Start,I - Start);
-   
+
+   // We don't want to confuse library users which can't handle MultiArch
+   if (StripMultiArch == true) {
+      size_t const found = Package.rfind(':');
+      if (found != string::npos)
+	 Package = Package.substr(0,found);
+   }
+
    // Skip white space to the '('
    for (;I != Stop && isspace(*I) != 0 ; I++);
    
@@ -441,6 +561,7 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
    if (ParseArchFlags == true)
    {
       string arch = _config->Find("APT::Architecture");
+      string completeArch = CompleteArch(arch);
 
       // Parse an architecture
       if (I != Stop && *I == '[')
@@ -468,8 +589,13 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
 	       I++;
             }
 
-	    if (stringcmp(arch,I,End) == 0)
+	    if (stringcmp(arch,I,End) == 0) {
 	       Found = true;
+	    } else {
+	       std::string wildcard = SubstVar(string(I, End), "any", "*");
+	       if (fnmatch(wildcard.c_str(), completeArch.c_str(), 0) == 0)
+	          Found = true;
+	    }
 	    
 	    if (*End++ == ']') {
 	       I = End;
@@ -508,15 +634,16 @@ const char *debListParser::ParseDepends(const char *Start,const char *Stop,
 // ---------------------------------------------------------------------
 /* This is the higher level depends parser. It takes a tag and generates
    a complete depends tree for the given version. */
-bool debListParser::ParseDepends(pkgCache::VerIterator Ver,
+bool debListParser::ParseDepends(pkgCache::VerIterator &Ver,
 				 const char *Tag,unsigned int Type)
 {
    const char *Start;
    const char *Stop;
    if (Section.Find(Tag,Start,Stop) == false)
       return true;
-   
+
    string Package;
+   string const pkgArch = Ver.Arch(true);
    string Version;
    unsigned int Op;
 
@@ -525,8 +652,18 @@ bool debListParser::ParseDepends(pkgCache::VerIterator Ver,
       Start = ParseDepends(Start,Stop,Package,Version,Op);
       if (Start == 0)
 	 return _error->Error("Problem parsing dependency %s",Tag);
-      
-      if (NewDepends(Ver,Package,Version,Op,Type) == false)
+
+      if (MultiArchEnabled == true &&
+	  (Type == pkgCache::Dep::Conflicts ||
+	   Type == pkgCache::Dep::DpkgBreaks ||
+	   Type == pkgCache::Dep::Replaces))
+      {
+	 for (std::vector<std::string>::const_iterator a = Architectures.begin();
+	      a != Architectures.end(); ++a)
+	    if (NewDepends(Ver,Package,*a,Version,Op,Type) == false)
+	       return false;
+      }
+      else if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false)
 	 return false;
       if (Start == Stop)
 	 break;
@@ -537,33 +674,55 @@ bool debListParser::ParseDepends(pkgCache::VerIterator Ver,
 // ListParser::ParseProvides - Parse the provides list			/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debListParser::ParseProvides(pkgCache::VerIterator Ver)
+bool debListParser::ParseProvides(pkgCache::VerIterator &Ver)
 {
    const char *Start;
    const char *Stop;
-   if (Section.Find("Provides",Start,Stop) == false)
-      return true;
-   
-   string Package;
-   string Version;
-   unsigned int Op;
-
-   while (1)
+   if (Section.Find("Provides",Start,Stop) == true)
    {
-      Start = ParseDepends(Start,Stop,Package,Version,Op);
-      if (Start == 0)
-	 return _error->Error("Problem parsing Provides line");
-      if (Op != pkgCache::Dep::NoOp) {
-	 _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str());
-      } else {
-	 if (NewProvides(Ver,Package,Version) == false)
-	    return false;
+      string Package;
+      string Version;
+      string const Arch = Ver.Arch(true);
+      unsigned int Op;
+
+      while (1)
+      {
+	 Start = ParseDepends(Start,Stop,Package,Version,Op);
+	 if (Start == 0)
+	    return _error->Error("Problem parsing Provides line");
+	 if (Op != pkgCache::Dep::NoOp) {
+	    _error->Warning("Ignoring Provides line with DepCompareOp for package %s", Package.c_str());
+	 } else {
+	    if (NewProvides(Ver, Package, Arch, Version) == false)
+	       return false;
+	 }
+
+	 if (Start == Stop)
+	    break;
       }
+   }
 
-      if (Start == Stop)
-	 break;
+   if (Ver->MultiArch == pkgCache::Version::Allowed)
+   {
+      string const Package = string(Ver.ParentPkg().Name()).append(":").append("any");
+      NewProvides(Ver, Package, "any", Ver.VerStr());
    }
-   
+
+   if (Ver->MultiArch != pkgCache::Version::Foreign)
+      return true;
+
+   if (MultiArchEnabled == false)
+      return true;
+
+   string const Package = Ver.ParentPkg().Name();
+   string const Version = Ver.VerStr();
+   for (std::vector<string>::const_iterator a = Architectures.begin();
+	a != Architectures.end(); ++a)
+   {
+      if (NewProvides(Ver, Package, *a, Version) == false)
+	 return false;
+   }
+
    return true;
 }
 									/*}}}*/
@@ -594,16 +753,23 @@ bool debListParser::Step()
       /* See if this is the correct Architecture, if it isn't then we
          drop the whole section. A missing arch tag only happens (in theory)
          inside the Status file, so that is a positive return */
-      const char *Start;
-      const char *Stop;
-      if (Section.Find("Architecture",Start,Stop) == false)
+      string const Architecture = Section.FindS("Architecture");
+      if (Architecture.empty() == true)
 	 return true;
 
-      if (stringcmp(Arch,Start,Stop) == 0)
-	 return true;
+      if (Arch.empty() == true || Arch == "any" || MultiArchEnabled == false)
+      {
+	 if (APT::Configuration::checkArchitecture(Architecture) == true)
+	    return true;
+      }
+      else
+      {
+	 if (Architecture == Arch)
+	    return true;
 
-      if (stringcmp(Start,Stop,"all") == 0)
-	 return true;
+	 if (Architecture == "all")
+	    return true;
+      }
 
       iOffset = Tags.Offset();
    }   
@@ -613,7 +779,7 @@ bool debListParser::Step()
 // ListParser::LoadReleaseInfo - Load the release information		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
+bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator &FileI,
 				    FileFd &File, string component)
 {
    pkgTagFile Tags(&File, File.Size() + 256); // XXX
@@ -621,8 +787,9 @@ bool debListParser::LoadReleaseInfo(pkgCache::PkgFileIterator FileI,
    if (Tags.Step(Section) == false)
       return false;
 
-   //mvo: I don't think we need to fill that in (it's unused since apt-0.6)
-   //FileI->Architecture = WriteUniqString(Arch);
+   // FIXME: Do we need it now for multi-arch?
+   // mvo: I don't think we need to fill that in (it's unused since apt-0.6)
+//    FileI->Architecture = WriteUniqString(Arch);
    
    // apt-secure does no longer download individual (per-section) Release
    // file. to provide Component pinning we use the section name now
diff --git a/apt-pkg/deb/deblistparser.h b/apt-pkg/deb/deblistparser.h
index 34bb29c72..4bc1bd93c 100644
--- a/apt-pkg/deb/deblistparser.h
+++ b/apt-pkg/deb/deblistparser.h
@@ -32,12 +32,14 @@ class debListParser : public pkgCacheGenerator::ListParser
    pkgTagSection Section;
    unsigned long iOffset;
    string Arch;
-   
+   std::vector<std::string> Architectures;
+   bool MultiArchEnabled;
+
    unsigned long UniqFindTagWrite(const char *Tag);
-   bool ParseStatus(pkgCache::PkgIterator Pkg,pkgCache::VerIterator Ver);
-   bool ParseDepends(pkgCache::VerIterator Ver,const char *Tag,
+   bool ParseStatus(pkgCache::PkgIterator &Pkg,pkgCache::VerIterator &Ver);
+   bool ParseDepends(pkgCache::VerIterator &Ver,const char *Tag,
 		     unsigned int Type);
-   bool ParseProvides(pkgCache::VerIterator Ver);
+   bool ParseProvides(pkgCache::VerIterator &Ver);
    static bool GrabWord(string Word,WordList *List,unsigned char &Out);
    
    public:
@@ -46,28 +48,31 @@ class debListParser : public pkgCacheGenerator::ListParser
       
    // These all operate against the current section
    virtual string Package();
+   virtual string Architecture();
+   virtual bool ArchitectureAll();
    virtual string Version();
-   virtual bool NewVersion(pkgCache::VerIterator Ver);
+   virtual bool NewVersion(pkgCache::VerIterator &Ver);
    virtual string Description();
    virtual string DescriptionLanguage();
    virtual MD5SumValue Description_md5();
    virtual unsigned short VersionHash();
-   virtual bool UsePackage(pkgCache::PkgIterator Pkg,
-			   pkgCache::VerIterator Ver);
+   virtual bool UsePackage(pkgCache::PkgIterator &Pkg,
+			   pkgCache::VerIterator &Ver);
    virtual unsigned long Offset() {return iOffset;};
    virtual unsigned long Size() {return Section.size();};
 
    virtual bool Step();
    
-   bool LoadReleaseInfo(pkgCache::PkgFileIterator FileI,FileFd &File,
+   bool LoadReleaseInfo(pkgCache::PkgFileIterator &FileI,FileFd &File,
 			string section);
    
    static const char *ParseDepends(const char *Start,const char *Stop,
 			    string &Package,string &Ver,unsigned int &Op,
-			    bool ParseArchFlags = false);
+			    bool const &ParseArchFlags = false,
+			    bool const &StripMultiArch = false);
    static const char *ConvertRelation(const char *I,unsigned int &Op);
 
-   debListParser(FileFd *File);
+   debListParser(FileFd *File, string const &Arch = "");
 };
 
 #endif
diff --git a/apt-pkg/deb/debmetaindex.cc b/apt-pkg/deb/debmetaindex.cc
index f3ab6960c..717d0bcde 100644
--- a/apt-pkg/deb/debmetaindex.cc
+++ b/apt-pkg/deb/debmetaindex.cc
@@ -5,11 +5,14 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/error.h>
 
+#include <set>
+
 using namespace std;
 
-string debReleaseIndex::Info(const char *Type, const string Section) const
+string debReleaseIndex::Info(const char *Type, string const &Section, string const &Arch) const
 {
    string Info = ::URI::SiteOnly(URI) + ' ';
    if (Dist[Dist.size() - 1] == '/')
@@ -18,7 +21,11 @@ string debReleaseIndex::Info(const char *Type, const string Section) const
          Info += Dist;
    }
    else
-      Info += Dist + '/' + Section;   
+   {
+      Info += Dist + '/' + Section;
+      if (Arch.empty() != true)
+	 Info += " " + Arch;
+   }
    Info += " ";
    Info += Type;
    return Info;
@@ -60,16 +67,21 @@ string debReleaseIndex::MetaIndexURI(const char *Type) const
    return Res;
 }
 
-string debReleaseIndex::IndexURISuffix(const char *Type, const string Section) const
+string debReleaseIndex::IndexURISuffix(const char *Type, string const &Section, string const &Arch) const
 {
    string Res ="";
    if (Dist[Dist.size() - 1] != '/')
-      Res += Section + "/binary-" + _config->Find("APT::Architecture") + '/';
+   {
+      if (Arch == "native")
+	 Res += Section + "/binary-" + _config->Find("APT::Architecture") + '/';
+      else
+	 Res += Section + "/binary-" + Arch + '/';
+   }
    return Res + Type;
 }
    
 
-string debReleaseIndex::IndexURI(const char *Type, const string Section) const
+string debReleaseIndex::IndexURI(const char *Type, string const &Section, string const &Arch) const
 {
    if (Dist[Dist.size() - 1] == '/')
    {
@@ -81,10 +93,10 @@ string debReleaseIndex::IndexURI(const char *Type, const string Section) const
       return Res + Type;
    }
    else
-      return URI + "dists/" + Dist + '/' + IndexURISuffix(Type, Section);
+      return URI + "dists/" + Dist + '/' + IndexURISuffix(Type, Section, Arch);
  }
 
-string debReleaseIndex::SourceIndexURISuffix(const char *Type, const string Section) const
+string debReleaseIndex::SourceIndexURISuffix(const char *Type, const string &Section) const
 {
    string Res ="";
    if (Dist[Dist.size() - 1] != '/')
@@ -92,7 +104,7 @@ string debReleaseIndex::SourceIndexURISuffix(const char *Type, const string Sect
    return Res + Type;
 }
 
-string debReleaseIndex::SourceIndexURI(const char *Type, const string Section) const
+string debReleaseIndex::SourceIndexURI(const char *Type, const string &Section) const
 {
    string Res;
    if (Dist[Dist.size() - 1] == '/')
@@ -107,44 +119,61 @@ string debReleaseIndex::SourceIndexURI(const char *Type, const string Section) c
       return URI + "dists/" + Dist + "/" + SourceIndexURISuffix(Type, Section);
 }
 
-debReleaseIndex::debReleaseIndex(string URI,string Dist)
-{
-   this->URI = URI;
-   this->Dist = Dist;
-   this->Indexes = NULL;
-   this->Type = "deb";
+debReleaseIndex::debReleaseIndex(string const &URI, string const &Dist) {
+	this->URI = URI;
+	this->Dist = Dist;
+	this->Indexes = NULL;
+	this->Type = "deb";
 }
 
-debReleaseIndex::~debReleaseIndex()
-{
-   for (vector<const debSectionEntry *>::const_iterator I = SectionEntries.begin();
-	I != SectionEntries.end(); I++)
-      delete *I;
+debReleaseIndex::~debReleaseIndex() {
+	for (map<string, vector<debSectionEntry const*> >::const_iterator A = ArchEntries.begin();
+	     A != ArchEntries.end(); ++A)
+		for (vector<const debSectionEntry *>::const_iterator S = A->second.begin();
+		     S != A->second.end(); ++S)
+			delete *S;
 }
 
-vector <struct IndexTarget *>* debReleaseIndex::ComputeIndexTargets() const
-{
-   vector <struct IndexTarget *>* IndexTargets = new vector <IndexTarget *>;
-   for (vector <const debSectionEntry *>::const_iterator I = SectionEntries.begin();
-	I != SectionEntries.end();
-	I++)
-   {
-      IndexTarget * Target = new IndexTarget();
-      Target->ShortDesc = (*I)->IsSrc ? "Sources" : "Packages";
-      Target->MetaKey
-	= (*I)->IsSrc ? SourceIndexURISuffix(Target->ShortDesc.c_str(), (*I)->Section)
-	              : IndexURISuffix(Target->ShortDesc.c_str(), (*I)->Section);
-      Target->URI 
-	= (*I)->IsSrc ? SourceIndexURI(Target->ShortDesc.c_str(), (*I)->Section)
-	              : IndexURI(Target->ShortDesc.c_str(), (*I)->Section);
-      
-      Target->Description = Info (Target->ShortDesc.c_str(), (*I)->Section);
-      IndexTargets->push_back (Target);
-   }
-   return IndexTargets;
+vector <struct IndexTarget *>* debReleaseIndex::ComputeIndexTargets() const {
+	vector <struct IndexTarget *>* IndexTargets = new vector <IndexTarget *>;
+
+	map<string, vector<debSectionEntry const*> >::const_iterator const src = ArchEntries.find("source");
+	if (src != ArchEntries.end()) {
+		vector<debSectionEntry const*> const SectionEntries = src->second;
+		for (vector<debSectionEntry const*>::const_iterator I = SectionEntries.begin();
+		     I != SectionEntries.end(); ++I) {
+			IndexTarget * Target = new IndexTarget();
+			Target->ShortDesc = "Sources";
+			Target->MetaKey = SourceIndexURISuffix(Target->ShortDesc.c_str(), (*I)->Section);
+			Target->URI = SourceIndexURI(Target->ShortDesc.c_str(), (*I)->Section);
+			Target->Description = Info (Target->ShortDesc.c_str(), (*I)->Section);
+			IndexTargets->push_back (Target);
+		}
+	}
+
+	// Only source release
+	if (IndexTargets->empty() == false && ArchEntries.size() == 1)
+		return IndexTargets;
+
+	for (map<string, vector<debSectionEntry const*> >::const_iterator a = ArchEntries.begin();
+	     a != ArchEntries.end(); ++a) {
+		if (a->first == "source")
+			continue;
+		for (vector <const debSectionEntry *>::const_iterator I = a->second.begin();
+		     I != a->second.end(); ++I) {
+			IndexTarget * Target = new IndexTarget();
+			Target->ShortDesc = "Packages";
+			Target->MetaKey = IndexURISuffix(Target->ShortDesc.c_str(), (*I)->Section, a->first);
+			Target->URI = IndexURI(Target->ShortDesc.c_str(), (*I)->Section, a->first);
+			Target->Description = Info (Target->ShortDesc.c_str(), (*I)->Section, a->first);
+			IndexTargets->push_back (Target);
+		}
+	}
+
+	return IndexTargets;
 }
 									/*}}}*/
-bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool GetAll) const
+bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool const &GetAll) const
 {
    // special case for --print-uris
    if (GetAll) {
@@ -169,17 +198,28 @@ bool debReleaseIndex::GetIndexes(pkgAcquire *Owner, bool GetAll) const
 		     ComputeIndexTargets(),
 		     new indexRecords (Dist));
 
-   // Queue the translations
-   for (vector<const debSectionEntry *>::const_iterator I = SectionEntries.begin(); 
-	I != SectionEntries.end(); I++) {
-
-      if((*I)->IsSrc)
-	 continue;
-      debTranslationsIndex i = debTranslationsIndex(URI,Dist,(*I)->Section);
-      i.GetIndexes(Owner);
-   }
-
-   return true;
+	// Queue the translations
+	std::vector<std::string> const lang = APT::Configuration::getLanguages(true);
+	map<string, set<string> > sections;
+	for (map<string, vector<debSectionEntry const*> >::const_iterator a = ArchEntries.begin();
+	     a != ArchEntries.end(); ++a) {
+		if (a->first == "source")
+			continue;
+		for (vector<debSectionEntry const*>::const_iterator I = a->second.begin();
+		     I != a->second.end(); I++)
+			sections[(*I)->Section].insert(lang.begin(), lang.end());
+	}
+
+	for (map<string, set<string> >::const_iterator s = sections.begin();
+	     s != sections.end(); ++s)
+		for (set<string>::const_iterator l = s->second.begin();
+		     l != s->second.end(); l++) {
+			if (*l == "none") continue;
+			debTranslationsIndex i = debTranslationsIndex(URI,Dist,s->first,(*l).c_str());
+			i.GetIndexes(Owner);
+		}
+
+	return true;
 }
 
 bool debReleaseIndex::IsTrusted() const
@@ -196,67 +236,123 @@ bool debReleaseIndex::IsTrusted() const
    return false;
 }
 
-vector <pkgIndexFile *> *debReleaseIndex::GetIndexFiles()
-{
-   if (Indexes != NULL)
-      return Indexes;
-
-   Indexes = new vector <pkgIndexFile*>;
-   for (vector<const debSectionEntry *>::const_iterator I = SectionEntries.begin(); 
-	I != SectionEntries.end(); I++) {
-      if ((*I)->IsSrc)
-         Indexes->push_back(new debSourcesIndex (URI, Dist, (*I)->Section, IsTrusted()));
-      else 
-      {
-         Indexes->push_back(new debPackagesIndex (URI, Dist, (*I)->Section, IsTrusted()));
-	 Indexes->push_back(new debTranslationsIndex(URI, Dist, (*I)->Section));
-      }
-   }
+vector <pkgIndexFile *> *debReleaseIndex::GetIndexFiles() {
+	if (Indexes != NULL)
+		return Indexes;
+
+	Indexes = new vector <pkgIndexFile*>;
+	map<string, vector<debSectionEntry const*> >::const_iterator const src = ArchEntries.find("source");
+	if (src != ArchEntries.end()) {
+		vector<debSectionEntry const*> const SectionEntries = src->second;
+		for (vector<debSectionEntry const*>::const_iterator I = SectionEntries.begin();
+		     I != SectionEntries.end(); I++)
+			Indexes->push_back(new debSourcesIndex (URI, Dist, (*I)->Section, IsTrusted()));
+	}
+
+	// Only source release
+	if (Indexes->empty() == false && ArchEntries.size() == 1)
+		return Indexes;
+
+	std::vector<std::string> const lang = APT::Configuration::getLanguages(true);
+	map<string, set<string> > sections;
+	for (map<string, vector<debSectionEntry const*> >::const_iterator a = ArchEntries.begin();
+	     a != ArchEntries.end(); ++a) {
+		if (a->first == "source")
+			continue;
+		for (vector<debSectionEntry const*>::const_iterator I = a->second.begin();
+		     I != a->second.end(); I++) {
+			Indexes->push_back(new debPackagesIndex (URI, Dist, (*I)->Section, IsTrusted(), a->first));
+			sections[(*I)->Section].insert(lang.begin(), lang.end());
+		}
+	}
+
+	for (map<string, set<string> >::const_iterator s = sections.begin();
+	     s != sections.end(); ++s)
+		for (set<string>::const_iterator l = s->second.begin();
+		     l != s->second.end(); l++) {
+			if (*l == "none") continue;
+			Indexes->push_back(new debTranslationsIndex(URI,Dist,s->first,(*l).c_str()));
+		}
+
+	return Indexes;
+}
 
-   return Indexes;
+void debReleaseIndex::PushSectionEntry(vector<string> const &Archs, const debSectionEntry *Entry) {
+	for (vector<string>::const_iterator a = Archs.begin();
+	     a != Archs.end(); ++a)
+		ArchEntries[*a].push_back(new debSectionEntry(Entry->Section, Entry->IsSrc));
+	delete Entry;
 }
 
-void debReleaseIndex::PushSectionEntry(const debSectionEntry *Entry)
-{
-   SectionEntries.push_back(Entry);
+void debReleaseIndex::PushSectionEntry(string const &Arch, const debSectionEntry *Entry) {
+	ArchEntries[Arch].push_back(Entry);
 }
 
-debReleaseIndex::debSectionEntry::debSectionEntry (string Section, bool IsSrc): Section(Section)
-{
-   this->IsSrc = IsSrc;
+void debReleaseIndex::PushSectionEntry(const debSectionEntry *Entry) {
+	if (Entry->IsSrc == true)
+		PushSectionEntry("source", Entry);
+	else {
+		for (map<string, vector<const debSectionEntry *> >::iterator a = ArchEntries.begin();
+		     a != ArchEntries.end(); ++a) {
+			a->second.push_back(Entry);
+		}
+	}
 }
 
+debReleaseIndex::debSectionEntry::debSectionEntry (string const &Section,
+		bool const &IsSrc): Section(Section), IsSrc(IsSrc)
+{}
+
 class debSLTypeDebian : public pkgSourceList::Type
 {
    protected:
 
-   bool CreateItemInternal(vector<metaIndex *> &List,string URI,
-			   string Dist,string Section,
-			   bool IsSrc) const
+   bool CreateItemInternal(vector<metaIndex *> &List, string const &URI,
+			   string const &Dist, string const &Section,
+			   bool const &IsSrc, map<string, string> const &Options) const
    {
-      for (vector<metaIndex *>::const_iterator I = List.begin(); 
+      map<string, string>::const_iterator const arch = Options.find("arch");
+      vector<string> const Archs =
+		(arch != Options.end()) ? VectorizeString(arch->second, ',') :
+				APT::Configuration::getArchitectures();
+
+      for (vector<metaIndex *>::const_iterator I = List.begin();
 	   I != List.end(); I++)
       {
-	 // This check insures that there will be only one Release file
-	 // queued for all the Packages files and Sources files it
-	 // corresponds to.
-		if (strcmp((*I)->GetType(), "deb") == 0)
+	 // We only worry about debian entries here
+	 if (strcmp((*I)->GetType(), "deb") != 0)
+	    continue;
+
+	 debReleaseIndex *Deb = (debReleaseIndex *) (*I);
+	 /* This check insures that there will be only one Release file
+	    queued for all the Packages files and Sources files it
+	    corresponds to. */
+	 if (Deb->GetURI() == URI && Deb->GetDist() == Dist)
 	 {
-	    debReleaseIndex *Deb = (debReleaseIndex *) (*I);
-	    // This check insures that there will be only one Release file
-	    // queued for all the Packages files and Sources files it
-	    // corresponds to.
-	    if (Deb->GetURI() == URI && Deb->GetDist() == Dist)
+	    if (IsSrc == true)
+	       Deb->PushSectionEntry("source", new debReleaseIndex::debSectionEntry(Section, IsSrc));
+	    else
 	    {
-	       Deb->PushSectionEntry(new debReleaseIndex::debSectionEntry(Section, IsSrc));
-	       return true;
+	       if (Dist[Dist.size() - 1] == '/')
+		  Deb->PushSectionEntry("any", new debReleaseIndex::debSectionEntry(Section, IsSrc));
+	       else
+		  Deb->PushSectionEntry(Archs, new debReleaseIndex::debSectionEntry(Section, IsSrc));
 	    }
+	    return true;
 	 }
       }
       // No currently created Release file indexes this entry, so we create a new one.
       // XXX determine whether this release is trusted or not
-      debReleaseIndex *Deb = new debReleaseIndex(URI,Dist);
-      Deb->PushSectionEntry (new debReleaseIndex::debSectionEntry(Section, IsSrc));
+      debReleaseIndex *Deb = new debReleaseIndex(URI, Dist);
+      if (IsSrc == true)
+	 Deb->PushSectionEntry ("source", new debReleaseIndex::debSectionEntry(Section, IsSrc));
+      else
+      {
+	 if (Dist[Dist.size() - 1] == '/')
+	    Deb->PushSectionEntry ("any", new debReleaseIndex::debSectionEntry(Section, IsSrc));
+	 else
+	    Deb->PushSectionEntry (Archs, new debReleaseIndex::debSectionEntry(Section, IsSrc));
+      }
       List.push_back(Deb);
       return true;
    }
@@ -266,10 +362,11 @@ class debSLTypeDeb : public debSLTypeDebian
 {
    public:
 
-   bool CreateItem(vector<metaIndex *> &List,string URI,
-		   string Dist,string Section) const
+   bool CreateItem(vector<metaIndex *> &List, string const &URI,
+		   string const &Dist, string const &Section,
+		   std::map<string, string> const &Options) const
    {
-      return CreateItemInternal(List, URI, Dist, Section, false);
+      return CreateItemInternal(List, URI, Dist, Section, false, Options);
    }
 
    debSLTypeDeb()
@@ -283,10 +380,11 @@ class debSLTypeDebSrc : public debSLTypeDebian
 {
    public:
 
-   bool CreateItem(vector<metaIndex *> &List,string URI,
-		   string Dist,string Section) const 
+   bool CreateItem(vector<metaIndex *> &List, string const &URI,
+		   string const &Dist, string const &Section,
+		   std::map<string, string> const &Options) const
    {
-      return CreateItemInternal(List, URI, Dist, Section, true);
+      return CreateItemInternal(List, URI, Dist, Section, true, Options);
    }
    
    debSLTypeDebSrc()
diff --git a/apt-pkg/deb/debmetaindex.h b/apt-pkg/deb/debmetaindex.h
index 8e6a1463b..360fa5419 100644
--- a/apt-pkg/deb/debmetaindex.h
+++ b/apt-pkg/deb/debmetaindex.h
@@ -5,40 +5,44 @@
 #include <apt-pkg/metaindex.h>
 #include <apt-pkg/sourcelist.h>
 
+#include <map>
+
 class debReleaseIndex : public metaIndex {
    public:
 
    class debSectionEntry
    {
       public:
-      debSectionEntry (string Section, bool IsSrc);
-      bool IsSrc;
-      string Section;
+      debSectionEntry (string const &Section, bool const &IsSrc);
+      string const Section;
+      bool const IsSrc;
    };
 
    private:
-   vector <const debSectionEntry *> SectionEntries;
+   std::map<string, vector<debSectionEntry const*> > ArchEntries;
 
    public:
 
-   debReleaseIndex(string URI, string Dist);
+   debReleaseIndex(string const &URI, string const &Dist);
    ~debReleaseIndex();
 
-   virtual string ArchiveURI(string File) const {return URI + File;};
-   virtual bool GetIndexes(pkgAcquire *Owner, bool GetAll=false) const;
+   virtual string ArchiveURI(string const &File) const {return URI + File;};
+   virtual bool GetIndexes(pkgAcquire *Owner, bool const &GetAll=false) const;
    vector <struct IndexTarget *>* ComputeIndexTargets() const;
-   string Info(const char *Type, const string Section) const;
+   string Info(const char *Type, string const &Section, string const &Arch="") const;
    string MetaIndexInfo(const char *Type) const;
    string MetaIndexFile(const char *Types) const;
    string MetaIndexURI(const char *Type) const;
-   string IndexURI(const char *Type, const string Section) const;
-   string IndexURISuffix(const char *Type, const string Section) const;
-   string SourceIndexURI(const char *Type, const string Section) const;
-   string SourceIndexURISuffix(const char *Type, const string Section) const;
+   string IndexURI(const char *Type, string const &Section, string const &Arch="native") const;
+   string IndexURISuffix(const char *Type, string const &Section, string const &Arch="native") const;
+   string SourceIndexURI(const char *Type, const string &Section) const;
+   string SourceIndexURISuffix(const char *Type, const string &Section) const;
    virtual vector <pkgIndexFile *> *GetIndexFiles();
 
    virtual bool IsTrusted() const;
 
+   void PushSectionEntry(vector<string> const &Archs, const debSectionEntry *Entry);
+   void PushSectionEntry(string const &Arch, const debSectionEntry *Entry);
    void PushSectionEntry(const debSectionEntry *Entry);
 };
 
diff --git a/apt-pkg/deb/debrecords.cc b/apt-pkg/deb/debrecords.cc
index 57d30dc62..ec9e395ef 100644
--- a/apt-pkg/deb/debrecords.cc
+++ b/apt-pkg/deb/debrecords.cc
@@ -11,6 +11,7 @@
 #include <apt-pkg/debrecords.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/aptconfiguration.h>
 #include <langinfo.h>
 									/*}}}*/
 
@@ -18,7 +19,7 @@
 // ---------------------------------------------------------------------
 /* */
 debRecordParser::debRecordParser(string FileName,pkgCache &Cache) : 
-                  File(FileName,FileFd::ReadOnly), 
+                  File(FileName,FileFd::ReadOnlyGzip), 
                   Tags(&File, std::max(Cache.Head().MaxVerFileSize, 
 				       Cache.Head().MaxDescFileSize) + 200)
 {
@@ -110,13 +111,18 @@ string debRecordParser::ShortDesc()
 string debRecordParser::LongDesc()
 {
   string orig, dest;
-  char *codeset = nl_langinfo(CODESET);
 
   if (!Section.FindS("Description").empty())
      orig = Section.FindS("Description").c_str();
-  else 
-     orig = Section.FindS(("Description-" + pkgIndexFile::LanguageCode()).c_str()).c_str();
+  else
+  {
+     vector<string> const lang = APT::Configuration::getLanguages();
+     for (vector<string>::const_iterator l = lang.begin();
+	  orig.empty() && l != lang.end(); l++)
+	orig = Section.FindS(string("Description-").append(*l).c_str());
+  }
 
+  char const * const codeset = nl_langinfo(CODESET);
   if (strcmp(codeset,"UTF-8") != 0) {
      UTF8ToCodeset(codeset, orig, &dest);
      orig = dest;
diff --git a/apt-pkg/deb/debsrcrecords.cc b/apt-pkg/deb/debsrcrecords.cc
index bde10aa6d..21336e1af 100644
--- a/apt-pkg/deb/debsrcrecords.cc
+++ b/apt-pkg/deb/debsrcrecords.cc
@@ -54,7 +54,8 @@ const char **debSrcRecordParser::Binaries()
    package/version records representing the build dependency. The returned 
    array need not be freed and will be reused by the next call to this 
    function */
-bool debSrcRecordParser::BuildDepends(vector<pkgSrcRecords::Parser::BuildDepRec> &BuildDeps, bool ArchOnly)
+bool debSrcRecordParser::BuildDepends(vector<pkgSrcRecords::Parser::BuildDepRec> &BuildDeps,
+					bool const &ArchOnly, bool const &StripMultiArch)
 {
    unsigned int I;
    const char *Start, *Stop;
@@ -77,7 +78,7 @@ bool debSrcRecordParser::BuildDepends(vector<pkgSrcRecords::Parser::BuildDepRec>
       while (1)
       {
          Start = debListParser::ParseDepends(Start, Stop, 
-		     rec.Package,rec.Version,rec.Op,true);
+		     rec.Package,rec.Version,rec.Op,true, StripMultiArch);
 	 
          if (Start == 0) 
             return _error->Error("Problem parsing dependency: %s", fields[I]);
diff --git a/apt-pkg/deb/debsrcrecords.h b/apt-pkg/deb/debsrcrecords.h
index a3b5a8286..905264daa 100644
--- a/apt-pkg/deb/debsrcrecords.h
+++ b/apt-pkg/deb/debsrcrecords.h
@@ -30,14 +30,14 @@ class debSrcRecordParser : public pkgSrcRecords::Parser
 
    virtual bool Restart() {return Tags.Jump(Sect,0);};
    virtual bool Step() {iOffset = Tags.Offset(); return Tags.Step(Sect);};
-   virtual bool Jump(unsigned long Off) {iOffset = Off; return Tags.Jump(Sect,Off);};
+   virtual bool Jump(unsigned long const &Off) {iOffset = Off; return Tags.Jump(Sect,Off);};
 
    virtual string Package() const {return Sect.FindS("Package");};
    virtual string Version() const {return Sect.FindS("Version");};
    virtual string Maintainer() const {return Sect.FindS("Maintainer");};
    virtual string Section() const {return Sect.FindS("Section");};
    virtual const char **Binaries();
-   virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool ArchOnly);
+   virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool const &ArchOnly, bool const &StripMultiArch = true);
    virtual unsigned long Offset() {return iOffset;};
    virtual string AsStr() 
    {
@@ -47,8 +47,8 @@ class debSrcRecordParser : public pkgSrcRecords::Parser
    };
    virtual bool Files(vector<pkgSrcRecords::File> &F);
 
-   debSrcRecordParser(string File,pkgIndexFile const *Index) 
-      : Parser(Index), Fd(File,FileFd::ReadOnly), Tags(&Fd,102400), 
+   debSrcRecordParser(string const &File,pkgIndexFile const *Index) 
+      : Parser(Index), Fd(File,FileFd::ReadOnlyGzip), Tags(&Fd,102400), 
         Buffer(0), BufSize(0) {}
    ~debSrcRecordParser();
 };
diff --git a/apt-pkg/deb/debsystem.cc b/apt-pkg/deb/debsystem.cc
index 089a465c1..7056d771d 100644
--- a/apt-pkg/deb/debsystem.cc
+++ b/apt-pkg/deb/debsystem.cc
@@ -78,8 +78,15 @@ bool debSystem::Lock()
    {
       close(LockFD);
       LockFD = -1;
+      const char *cmd;
+      if (getenv("SUDO_USER") != NULL)
+	 cmd = "sudo dpkg --configure -a";
+      else
+	 cmd = "dpkg --configure -a";
+      // TRANSLATORS: the %s contains the recovery command, usually
+      //              dpkg --configure -a
       return _error->Error(_("dpkg was interrupted, you must manually "
-                             "run 'sudo dpkg --configure -a' to correct the problem. "));
+                             "run '%s' to correct the problem. "), cmd);
    }
 
 	 LockCount++;
@@ -157,7 +164,7 @@ bool debSystem::Initialize(Configuration &Cnf)
    /* These really should be jammed into a generic 'Local Database' engine
       which is yet to be determined. The functions in pkgcachegen should
       be the only users of these */
-   Cnf.CndSet("Dir::State::userstatus","status.user"); // Defunct
+   Cnf.CndSet("Dir::State::extended_states", Cnf.FindDir("Dir::State").append("extended_states"));
    Cnf.CndSet("Dir::State::status","/var/lib/dpkg/status");
    Cnf.CndSet("Dir::Bin::dpkg","/usr/bin/dpkg");
 
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 935cbb748..aa0b04bd5 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -53,6 +53,7 @@ namespace
     std::make_pair("configure", N_("Configuring %s")),
     std::make_pair("remove",    N_("Removing %s")),
     std::make_pair("purge",    N_("Completely removing %s")),
+    std::make_pair("disappear", N_("Noting disappearance of %s")),
     std::make_pair("trigproc",  N_("Running post-installation trigger %s"))
   };
 
@@ -108,7 +109,7 @@ ionice(int PID)
 /* */
 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache) 
    : pkgPackageManager(Cache), dpkgbuf_pos(0),
-     term_out(NULL), PackagesDone(0), PackagesTotal(0), pkgFailures(0)
+     term_out(NULL), history_out(NULL), PackagesDone(0), PackagesTotal(0)
 {
 }
 									/*}}}*/
@@ -127,7 +128,19 @@ bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
    if (File.empty() == true || Pkg.end() == true)
       return _error->Error("Internal Error, No file name for %s",Pkg.Name());
 
-   List.push_back(Item(Item::Install,Pkg,File));
+   // If the filename string begins with DPkg::Chroot-Directory, return the
+   // substr that is within the chroot so dpkg can access it.
+   string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
+   if (chrootdir != "/" && File.find(chrootdir) == 0)
+   {
+      size_t len = chrootdir.length();
+      if (chrootdir.at(len - 1) == '/')
+        len--;
+      List.push_back(Item(Item::Install,Pkg,File.substr(len)));
+   }
+   else
+      List.push_back(Item(Item::Install,Pkg,File));
+
    return true;
 }
 									/*}}}*/
@@ -409,7 +422,8 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
       'processing: install: pkg'
       'processing: configure: pkg'
       'processing: remove: pkg'
-      'processing: purge: pkg' - but for apt is it a ignored "unknown" action
+      'processing: purge: pkg'
+      'processing: disappear: pkg'
       'processing: trigproc: trigger'
 	    
    */
@@ -456,6 +470,9 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 	 write(OutStatusFd, status.str().c_str(), status.str().size());
       if (Debug == true)
 	 std::clog << "send: '" << status.str() << "'" << endl;
+
+      if (strncmp(action, "disappear", strlen("disappear")) == 0)
+	 handleDisappearAction(pkg_or_trigger);
       return;
    }
 
@@ -525,6 +542,51 @@ void pkgDPkgPM::ProcessDpkgStatusLine(int OutStatusFd, char *line)
 		<< " action: " << action << endl;
 }
 									/*}}}*/
+// DPkgPM::handleDisappearAction					/*{{{*/
+void pkgDPkgPM::handleDisappearAction(string const &pkgname)
+{
+   // record the package name for display and stuff later
+   disappearedPkgs.insert(pkgname);
+
+   pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
+   if (unlikely(Pkg.end() == true))
+      return;
+   // the disappeared package was auto-installed - nothing to do
+   if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
+      return;
+   pkgCache::VerIterator PkgVer = Pkg.CurrentVer();
+   if (unlikely(PkgVer.end() == true))
+      return;
+   /* search in the list of dependencies for (Pre)Depends,
+      check if this dependency has a Replaces on our package
+      and if so transfer the manual installed flag to it */
+   for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
+   {
+      if (Dep->Type != pkgCache::Dep::Depends &&
+	  Dep->Type != pkgCache::Dep::PreDepends)
+	 continue;
+      pkgCache::PkgIterator Tar = Dep.TargetPkg();
+      if (unlikely(Tar.end() == true))
+	 continue;
+      // the package is already marked as manual
+      if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
+	 continue;
+      pkgCache::VerIterator TarVer = Tar.CurrentVer();
+      for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
+      {
+	 if (Rep->Type != pkgCache::Dep::Replaces)
+	    continue;
+	 if (Pkg != Rep.TargetPkg())
+	    continue;
+	 // okay, they are strongly connected - transfer manual-bit
+	 if (Debug == true)
+	    std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
+	 Cache[Tar].Flags &= ~Flag::Auto;
+	 break;
+      }
+   }
+}
+									/*}}}*/
 // DPkgPM::DoDpkgStatusFd						/*{{{*/
 // ---------------------------------------------------------------------
 /*
@@ -563,15 +625,15 @@ void pkgDPkgPM::DoDpkgStatusFd(int statusfd, int OutStatusFd)
 }
 									/*}}}*/
 // DPkgPM::WriteHistoryTag						/*{{{*/
-void pkgDPkgPM::WriteHistoryTag(FILE *history_out, string tag, string value)
+void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
 {
-   if (value.size() > 0)
-   {
-      // poor mans rstrip(", ")
-      if (value[value.size()-2] == ',' && value[value.size()-1] == ' ')
-	 value.erase(value.size() - 2, 2);
-      fprintf(history_out, "%s: %s\n", tag.c_str(), value.c_str());
-   }
+   size_t const length = value.length();
+   if (length == 0)
+      return;
+   // poor mans rstrip(", ")
+   if (value[length-2] == ',' && value[length-1] == ' ')
+      value.erase(length - 2, 2);
+   fprintf(history_out, "%s: %s\n", tag.c_str(), value.c_str());
 }									/*}}}*/
 // DPkgPM::OpenLog							/*{{{*/
 bool pkgDPkgPM::OpenLog()
@@ -604,7 +666,7 @@ bool pkgDPkgPM::OpenLog()
 				   _config->Find("Dir::Log::History"));
    if (!history_name.empty())
    {
-      FILE *history_out = fopen(history_name.c_str(),"a");
+      history_out = fopen(history_name.c_str(),"a");
       if (history_out == NULL)
 	 return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
       chmod(history_name.c_str(), 0644);
@@ -613,25 +675,32 @@ bool pkgDPkgPM::OpenLog()
       for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
       {
 	 if (Cache[I].NewInstall())
-	    install += I.Name() + string(" (") + Cache[I].CandVersion + string("), ");
+	 {
+	    install += I.FullName(false) + string(" (") + Cache[I].CandVersion;
+	    if (Cache[I].Flags & pkgCache::Flag::Auto)
+	       install+= ", automatic";
+	    install += string("), ");
+	 }
 	 else if (Cache[I].Upgrade())
-	    upgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
+	    upgrade += I.FullName(false) + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 	 else if (Cache[I].Downgrade())
-	    downgrade += I.Name() + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
+	    downgrade += I.FullName(false) + string(" (") + Cache[I].CurVersion + string(", ") + Cache[I].CandVersion + string("), ");
 	 else if (Cache[I].Delete())
 	 {
 	    if ((Cache[I].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge)
-	       purge += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");	    
+	       purge += I.FullName(false) + string(" (") + Cache[I].CurVersion + string("), ");	    
 	    else
-	       remove += I.Name() + string(" (") + Cache[I].CurVersion + string("), ");	    
+	       remove += I.FullName(false) + string(" (") + Cache[I].CurVersion + string("), ");	    
 	 }
       }
-      WriteHistoryTag(history_out, "Install", install);
-      WriteHistoryTag(history_out, "Upgrade", upgrade);
-      WriteHistoryTag(history_out, "Downgrade",downgrade);
-      WriteHistoryTag(history_out, "Remove",remove);
-      WriteHistoryTag(history_out, "Purge",purge);
-      fclose(history_out);
+      if (_config->Exists("Commandline::AsString") == true)
+	 WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
+      WriteHistoryTag("Install", install);
+      WriteHistoryTag("Upgrade", upgrade);
+      WriteHistoryTag("Downgrade",downgrade);
+      WriteHistoryTag("Remove",remove);
+      WriteHistoryTag("Purge",purge);
+      fflush(history_out);
    }
    
    return true;
@@ -654,19 +723,29 @@ bool pkgDPkgPM::CloseLog()
    }
    term_out = NULL;
 
-   // check if the directory exists in which we want to write the file
-   string const logdir = _config->FindDir("Dir::Log");
-   if(not FileExists(logdir))
-      return _error->Error(_("Directory '%s' missing"), logdir.c_str());
-
-   string history_name = flCombine(_config->FindDir("Dir::Log"),
-				   _config->Find("Dir::Log::History"));
-   if (!history_name.empty())
+   if(history_out)
    {
-      FILE *history_out = fopen(history_name.c_str(),"a");
+      if (disappearedPkgs.empty() == false)
+      {
+	 string disappear;
+	 for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
+	      d != disappearedPkgs.end(); ++d)
+	 {
+	    pkgCache::PkgIterator P = Cache.FindPkg(*d);
+	    disappear.append(*d);
+	    if (P.end() == true)
+	       disappear.append(", ");
+	    else
+	       disappear.append(" (").append(Cache[P].CurVersion).append("), ");
+	 }
+	 WriteHistoryTag("Disappeared", disappear);
+      }
+      if (dpkg_error.empty() == false)
+	 fprintf(history_out, "Error: %s\n", dpkg_error.c_str());
       fprintf(history_out, "End-Date: %s\n", timestr);
       fclose(history_out);
    }
+   history_out = NULL;
 
    return true;
 }
@@ -914,6 +993,8 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 	 {
 	    if((*I).Pkg.end() == true)
 	       continue;
+	    if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.Name()) != disappearedPkgs.end())
+	       continue;
 	    Args[n++] = I->Pkg.Name();
 	    Size += strlen(Args[n-1]);
 	 }	 
@@ -1081,9 +1162,10 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 	    signal(SIGHUP,old_SIGHUP);
 	    return _error->Errno("waitpid","Couldn't wait for subprocess");
 	 }
+
 	 // wait for input or output here
 	 FD_ZERO(&rfds);
-	 if (!stdin_is_dev_null)
+	 if (master >= 0 && !stdin_is_dev_null)
 	    FD_SET(0, &rfds); 
 	 FD_SET(_dpkgin, &rfds);
 	 if(master >= 0)
@@ -1136,7 +1218,6 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 	 if(stopOnError)
 	    RunScripts("DPkg::Post-Invoke");
 
-	 string dpkg_error;
 	 if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV) 
 	    strprintf(dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
 	 else if (WIFEXITED(Status) != 0)
@@ -1145,17 +1226,7 @@ bool pkgDPkgPM::Go(int OutStatusFd)
 	    strprintf(dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
 
 	 if(dpkg_error.size() > 0)
-	 {
 	    _error->Error(dpkg_error.c_str());
-	    string history_name = flCombine(_config->FindDir("Dir::Log"),
-					    _config->Find("Dir::Log::History"));
-	    if (!history_name.empty())
-	    {
-	       FILE *history_out = fopen(history_name.c_str(),"a");
-	       fprintf(history_out, "Error: %s\n", dpkg_error.c_str());
-	       fclose(history_out);
-	    }
-	 }
 
 	 if(stopOnError) 
 	 {
@@ -1190,7 +1261,7 @@ void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
    string::size_type pos;
    FILE *report;
 
-   if (_config->FindB("Dpkg::ApportFailureReport",true) == false)
+   if (_config->FindB("Dpkg::ApportFailureReport", false) == false)
    {
       std::clog << "configured to not write apport reports" << std::endl;
       return;
diff --git a/apt-pkg/deb/dpkgpm.h b/apt-pkg/deb/dpkgpm.h
index 160486bf9..b7b5a6def 100644
--- a/apt-pkg/deb/dpkgpm.h
+++ b/apt-pkg/deb/dpkgpm.h
@@ -29,6 +29,23 @@ class pkgDPkgPM : public pkgPackageManager
    char dpkgbuf[1024];
    int dpkgbuf_pos;
    FILE *term_out;
+   FILE *history_out;
+   string dpkg_error;
+
+   /** \brief record the disappear action and handle accordingly
+
+      dpkg let packages disappear then they have no files any longer and
+      nothing depends on them. We need to collect this as dpkg as well as
+      APT doesn't know beforehand that the package will disappear, so the
+      only possible option is to tell the user afterwards about it.
+      To enhance the experience we also try to forward the auto-install
+      flag so the disappear-causer(s) are not autoremoved next time -
+      for the transfer to happen the disappeared version needs to depend
+      on the package the flag should be forwarded to and this package
+      needs to declare a Replaces on the disappeared package.
+      \param pkgname Name of the package that disappeared
+   */
+   void handleDisappearAction(string const &pkgname);
 
    protected:
    int pkgFailures;
@@ -68,7 +85,7 @@ class pkgDPkgPM : public pkgPackageManager
    // Helpers
    bool RunScriptsWithPkgs(const char *Cnf);
    bool SendV2Pkgs(FILE *F);
-   void WriteHistoryTag(FILE* history_out, string tag, string value);
+   void WriteHistoryTag(string const &tag, string value);
 
    // apport integration
    void WriteApportReport(const char *pkgpath, const char *errormsg);
diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index ec7a5de64..bc663a8e9 100644
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -17,6 +17,7 @@
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/tagfile.h>
 
@@ -164,38 +165,50 @@ bool pkgDepCache::Init(OpProgress *Prog)
 bool pkgDepCache::readStateFile(OpProgress *Prog)			/*{{{*/
 {
    FileFd state_file;
-   string state = _config->FindDir("Dir::State") + "extended_states";
+   string const state = _config->FindFile("Dir::State::extended_states");
    if(FileExists(state)) {
       state_file.Open(state, FileFd::ReadOnly);
-      int file_size = state_file.Size();
+      int const file_size = state_file.Size();
       if(Prog != NULL)
 	 Prog->OverallProgress(0, file_size, 1, 
 			       _("Reading state information"));
 
       pkgTagFile tagfile(&state_file);
       pkgTagSection section;
-      int amt=0;
-      bool debug_autoremove=_config->FindB("Debug::pkgAutoRemove",false);
+      int amt = 0;
+      bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
       while(tagfile.Step(section)) {
-	 string pkgname = section.FindS("Package");
-	 pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);
-	 // Silently ignore unknown packages and packages with no actual
-	 // version.
-	 if(!pkg.end() && !pkg.VersionList().end()) {
-	    short reason = section.FindI("Auto-Installed", 0);
-	    if(reason > 0)
-	       PkgState[pkg->ID].Flags  |= Flag::Auto;
-	    if(debug_autoremove)
-	       std::cout << "Auto-Installed : " << pkgname << std::endl;
-	    amt+=section.size();
-	    if(Prog != NULL)
-	       Prog->OverallProgress(amt, file_size, 1, 
-				     _("Reading state information"));
+	 string const pkgname = section.FindS("Package");
+	 string pkgarch = section.FindS("Architecture");
+	 if (pkgarch.empty() == true)
+	    pkgarch = "any";
+	 pkgCache::PkgIterator pkg = Cache->FindPkg(pkgname, pkgarch);
+	 // Silently ignore unknown packages and packages with no actual version.
+	 if(pkg.end() == true || pkg->VersionList == 0)
+	    continue;
+
+	 short const reason = section.FindI("Auto-Installed", 0);
+	 if(reason > 0)
+	 {
+	    PkgState[pkg->ID].Flags |= Flag::Auto;
+	    if (unlikely(debug_autoremove))
+	       std::clog << "Auto-Installed : " << pkg.FullName() << std::endl;
+	    if (pkgarch == "any")
+	    {
+	       pkgCache::GrpIterator G = pkg.Group();
+	       for (pkg = G.NextPkg(pkg); pkg.end() != true; pkg = G.NextPkg(pkg))
+		  if (pkg->VersionList != 0)
+		     PkgState[pkg->ID].Flags |= Flag::Auto;
+	    }
 	 }
+	 amt += section.size();
 	 if(Prog != NULL)
-	    Prog->OverallProgress(file_size, file_size, 1, 
+	    Prog->OverallProgress(amt, file_size, 1, 
 				  _("Reading state information"));
       }
+      if(Prog != NULL)
+	 Prog->OverallProgress(file_size, file_size, 1,
+			       _("Reading state information"));
    }
 
    return true;
@@ -203,13 +216,13 @@ bool pkgDepCache::readStateFile(OpProgress *Prog)			/*{{{*/
 									/*}}}*/
 bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)	/*{{{*/
 {
-   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
+   bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
    
    if(debug_autoremove)
       std::clog << "pkgDepCache::writeStateFile()" << std::endl;
 
    FileFd StateFile;
-   string state = _config->FindDir("Dir::State") + "extended_states";
+   string const state = _config->FindFile("Dir::State::extended_states");
 
    // if it does not exist, create a empty one
    if(!FileExists(state)) 
@@ -224,7 +237,7 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)	/*{{{*/
 			   state.c_str());
 
    FILE *OutFile;
-   string outfile = state + ".tmp";
+   string const outfile = state + ".tmp";
    if((OutFile = fopen(outfile.c_str(),"w")) == NULL)
       return _error->Error(_("Failed to write temporary StateFile %s"),
 			   outfile.c_str());
@@ -235,46 +248,72 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)	/*{{{*/
    std::set<string> pkgs_seen;
    const char *nullreorderlist[] = {0};
    while(tagfile.Step(section)) {
-	 string pkgname = section.FindS("Package");
+	 string const pkgname = section.FindS("Package");
+	 string pkgarch = section.FindS("Architecture");
+	 if (pkgarch.empty() == true)
+	    pkgarch = "native";
 	 // Silently ignore unknown packages and packages with no actual
 	 // version.
-	 pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);
+	 pkgCache::PkgIterator pkg = Cache->FindPkg(pkgname, pkgarch);
 	 if(pkg.end() || pkg.VersionList().end()) 
 	    continue;
-	 bool newAuto = (PkgState[pkg->ID].Flags & Flag::Auto);
+	 StateCache const &P = PkgState[pkg->ID];
+	 bool newAuto = (P.Flags & Flag::Auto);
+	 // skip not installed or now-removed ones if requested
+	 if (InstalledOnly && (
+	     (pkg->CurrentVer == 0 && P.Mode != ModeInstall) ||
+	     (pkg->CurrentVer != 0 && P.Mode == ModeDelete)))
+	 {
+	    // The section is obsolete if it contains no other tag
+	    unsigned int const count = section.Count();
+	    if (count < 2 ||
+		(count == 2 && section.Exists("Auto-Installed")) ||
+		(count == 3 && section.Exists("Auto-Installed") && section.Exists("Architecture")))
+	       continue;
+	    else
+	       newAuto = false;
+	 }
 	 if(_config->FindB("Debug::pkgAutoRemove",false))
 	    std::clog << "Update existing AutoInstall info: " 
-		      << pkg.Name() << std::endl;
-	 TFRewriteData rewrite[2];
-	 rewrite[0].Tag = "Auto-Installed";
-	 rewrite[0].Rewrite = newAuto ? "1" : "0";
+		      << pkg.FullName() << std::endl;
+	 TFRewriteData rewrite[3];
+	 rewrite[0].Tag = "Architecture";
+	 rewrite[0].Rewrite = pkg.Arch();
 	 rewrite[0].NewTag = 0;
-	 rewrite[1].Tag = 0;
+	 rewrite[1].Tag = "Auto-Installed";
+	 rewrite[1].Rewrite = newAuto ? "1" : "0";
+	 rewrite[1].NewTag = 0;
+	 rewrite[2].Tag = 0;
 	 TFRewrite(OutFile, section, nullreorderlist, rewrite);
 	 fprintf(OutFile,"\n");
-	 pkgs_seen.insert(pkgname);
+	 pkgs_seen.insert(pkg.FullName());
    }
    
    // then write the ones we have not seen yet
    std::ostringstream ostr;
    for(pkgCache::PkgIterator pkg=Cache->PkgBegin(); !pkg.end(); pkg++) {
-      if(PkgState[pkg->ID].Flags & Flag::Auto) {
-	 if (pkgs_seen.find(pkg.Name()) != pkgs_seen.end()) {
+      StateCache const &P = PkgState[pkg->ID];
+      if(P.Flags & Flag::Auto) {
+	 if (pkgs_seen.find(pkg.FullName()) != pkgs_seen.end()) {
 	    if(debug_autoremove)
-	       std::clog << "Skipping already written " << pkg.Name() << std::endl;
+	       std::clog << "Skipping already written " << pkg.FullName() << std::endl;
 	    continue;
 	 }
-         // skip not installed ones if requested
-         if(InstalledOnly && pkg->CurrentVer == 0)
-            continue;
+	 // skip not installed ones if requested
+	 if (InstalledOnly && (
+	     (pkg->CurrentVer == 0 && P.Mode != ModeInstall) ||
+	     (pkg->CurrentVer != 0 && P.Mode == ModeDelete)))
+	    continue;
+	 const char* const pkgarch = pkg.Arch();
+	 if (strcmp(pkgarch, "all") == 0)
+	    continue;
 	 if(debug_autoremove)
-	    std::clog << "Writing new AutoInstall: " 
-		      << pkg.Name() << std::endl;
+	    std::clog << "Writing new AutoInstall: " << pkg.FullName() << std::endl;
 	 ostr.str(string(""));
-	 ostr << "Package: " << pkg.Name() 
+	 ostr << "Package: " << pkg.Name()
+	      << "\nArchitecture: " << pkgarch
 	      << "\nAuto-Installed: 1\n\n";
 	 fprintf(OutFile,"%s",ostr.str().c_str());
-	 fprintf(OutFile,"\n");
       }
    }
    fclose(OutFile);
@@ -299,7 +338,7 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
    /* Check simple depends. A depends -should- never self match but 
       we allow it anyhow because dpkg does. Technically it is a packaging
       bug. Conflicts may never self match */
-   if (Dep.TargetPkg() != Dep.ParentPkg() || 
+   if (Dep.TargetPkg()->Group != Dep.ParentPkg()->Group ||
        (Dep->Type != Dep::Conflicts && Dep->Type != Dep::DpkgBreaks && Dep->Type != Dep::Obsoletes))
    {
       PkgIterator Pkg = Dep.TargetPkg();
@@ -328,9 +367,9 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
    PkgIterator Pkg = Dep.ParentPkg();
    for (; P.end() != true; P++)
    {
-      /* Provides may never be applied against the same package if it is
-         a conflicts. See the comment above. */
-      if (P.OwnerPkg() == Pkg &&
+      /* Provides may never be applied against the same package (or group)
+         if it is a conflicts. See the comment above. */
+      if (P.OwnerPkg()->Group == Pkg->Group &&
 	  (Dep->Type == Dep::Conflicts || Dep->Type == Dep::DpkgBreaks))
 	 continue;
       
@@ -368,8 +407,60 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
 									/*}}}*/
 // DepCache::AddSizes - Add the packages sizes to the counters		/*{{{*/
 // ---------------------------------------------------------------------
-/* Call with Mult = -1 to preform the inverse opration */
-void pkgDepCache::AddSizes(const PkgIterator &Pkg,signed long Mult)
+/* Call with Mult = -1 to preform the inverse opration
+   The Mult increases the complexity of the calulations here and is unused -
+   or do we really have a usecase for removing the size of a package two
+   times? So let us replace it with a simple bool and be done with it… */
+__deprecated void pkgDepCache::AddSizes(const PkgIterator &Pkg,signed long Mult)
+{
+   StateCache &P = PkgState[Pkg->ID];
+   
+   if (Pkg->VersionList == 0)
+      return;
+   
+   if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && 
+       P.Keep() == true)
+      return;
+   
+   // Compute the size data
+   if (P.NewInstall() == true)
+   {
+      iUsrSize += (signed long long)(Mult*P.InstVerIter(*this)->InstalledSize);
+      iDownloadSize += (signed long long)(Mult*P.InstVerIter(*this)->Size);
+      return;
+   }
+   
+   // Upgrading
+   if (Pkg->CurrentVer != 0 && 
+       (P.InstallVer != (Version *)Pkg.CurrentVer() || 
+	(P.iFlags & ReInstall) == ReInstall) && P.InstallVer != 0)
+   {
+      iUsrSize += (signed long long)(Mult*((signed long long)P.InstVerIter(*this)->InstalledSize - 
+			(signed long long)Pkg.CurrentVer()->InstalledSize));
+      iDownloadSize += (signed long long)(Mult*P.InstVerIter(*this)->Size);
+      return;
+   }
+   
+   // Reinstall
+   if (Pkg.State() == pkgCache::PkgIterator::NeedsUnpack &&
+       P.Delete() == false)
+   {
+      iDownloadSize += (signed long long)(Mult*P.InstVerIter(*this)->Size);
+      return;
+   }
+   
+   // Removing
+   if (Pkg->CurrentVer != 0 && P.InstallVer == 0)
+   {
+      iUsrSize -= (signed long long)(Mult*Pkg.CurrentVer()->InstalledSize);
+      return;
+   }   
+}
+									/*}}}*/
+// DepCache::AddSizes - Add the packages sizes to the counters		/*{{{*/
+// ---------------------------------------------------------------------
+/* Call with Inverse = true to preform the inverse opration */
+void pkgDepCache::AddSizes(const PkgIterator &Pkg, bool const &Inverse)
 {
    StateCache &P = PkgState[Pkg->ID];
    
@@ -383,8 +474,13 @@ void pkgDepCache::AddSizes(const PkgIterator &Pkg,signed long Mult)
    // Compute the size data
    if (P.NewInstall() == true)
    {
-      iUsrSize += (signed)(Mult*P.InstVerIter(*this)->InstalledSize);
-      iDownloadSize += (signed)(Mult*P.InstVerIter(*this)->Size);
+      if (Inverse == false) {
+	 iUsrSize += P.InstVerIter(*this)->InstalledSize;
+	 iDownloadSize += P.InstVerIter(*this)->Size;
+      } else {
+	 iUsrSize -= P.InstVerIter(*this)->InstalledSize;
+	 iDownloadSize -= P.InstVerIter(*this)->Size;
+      }
       return;
    }
    
@@ -393,9 +489,15 @@ void pkgDepCache::AddSizes(const PkgIterator &Pkg,signed long Mult)
        (P.InstallVer != (Version *)Pkg.CurrentVer() || 
 	(P.iFlags & ReInstall) == ReInstall) && P.InstallVer != 0)
    {
-      iUsrSize += (signed)(Mult*((signed)P.InstVerIter(*this)->InstalledSize - 
-			(signed)Pkg.CurrentVer()->InstalledSize));
-      iDownloadSize += (signed)(Mult*P.InstVerIter(*this)->Size);
+      if (Inverse == false) {
+	 iUsrSize -= Pkg.CurrentVer()->InstalledSize;
+	 iUsrSize += P.InstVerIter(*this)->InstalledSize;
+	 iDownloadSize += P.InstVerIter(*this)->Size;
+      } else {
+	 iUsrSize -= P.InstVerIter(*this)->InstalledSize;
+	 iUsrSize += Pkg.CurrentVer()->InstalledSize;
+	 iDownloadSize -= P.InstVerIter(*this)->Size;
+      }
       return;
    }
    
@@ -403,14 +505,20 @@ void pkgDepCache::AddSizes(const PkgIterator &Pkg,signed long Mult)
    if (Pkg.State() == pkgCache::PkgIterator::NeedsUnpack &&
        P.Delete() == false)
    {
-      iDownloadSize += (signed)(Mult*P.InstVerIter(*this)->Size);
+      if (Inverse == false)
+	 iDownloadSize += P.InstVerIter(*this)->Size;
+      else
+	 iDownloadSize -= P.InstVerIter(*this)->Size;
       return;
    }
    
    // Removing
    if (Pkg->CurrentVer != 0 && P.InstallVer == 0)
    {
-      iUsrSize -= (signed)(Mult*Pkg.CurrentVer()->InstalledSize);
+      if (Inverse == false)
+	 iUsrSize -= Pkg.CurrentVer()->InstalledSize;
+      else
+	 iUsrSize += Pkg.CurrentVer()->InstalledSize;
       return;
    }   
 }
@@ -596,6 +704,107 @@ void pkgDepCache::UpdateVerState(PkgIterator Pkg)
    }
 }
 									/*}}}*/
+// DepCache::RemovePseudoInstalledPkg - MultiArch helper for Update()	/*{{{*/
+// ---------------------------------------------------------------------
+/* We "install" arch all packages for all archs if it is installed. Many
+   of these will be broken. This method will look at these broken Pkg and
+   "remove" it. */
+bool pkgDepCache::RemovePseudoInstalledPkg(PkgIterator &Pkg, std::set<unsigned long> &recheck) {
+   if (unlikely(Pkg->CurrentVer == 0))
+      return false;
+
+   VerIterator V = Pkg.CurrentVer();
+   if (V->MultiArch != Version::All)
+      return false;
+
+   // Never ever kill an "all" package - they have no dependency so they can't be broken
+   if (strcmp(Pkg.Arch(),"all") == 0)
+      return false;
+
+   unsigned char const CurDepState = VersionState(V.DependsList(),DepInstall,DepInstMin,DepInstPolicy);
+   if ((CurDepState & DepInstMin) == DepInstMin) {
+      // okay, the package isn't broken, but is the package also required?
+      // If it has no real dependencies, no installed rdepends and doesn't
+      // provide something of value, we will kill it as not required.
+      // These pseudopackages have otherwise interesting effects if they get
+      // a new dependency in a newer version…
+      for (pkgCache::DepIterator D = V.DependsList();
+	   D.end() != true; ++D)
+	 if (D.IsCritical() == true && D.ParentPkg()->Group != Pkg->Group)
+	    return false;
+      for (DepIterator D = Pkg.RevDependsList(); D.end() != true; ++D)
+      {
+	 if (D.IsCritical() == false)
+	    continue;
+	 PkgIterator const P = D.ParentPkg();
+	 if (P->Group == Pkg->Group)
+	    continue;
+	 if (P->CurrentVer != 0)
+	    return false;
+      }
+      for (PrvIterator Prv = V.ProvidesList(); Prv.end() != true; Prv++)
+	 for (DepIterator d = Prv.ParentPkg().RevDependsList();
+	      d.end() != true; ++d)
+	 {
+	    PkgIterator const P = d.ParentPkg();
+	    if (P->CurrentVer != 0 &&
+	        P->Group != Pkg->Group)
+	       return false;
+	 }
+   }
+
+   // Dependencies for this arch all package are not statisfied
+   // so we installed it only for our convenience: get right of it now.
+   RemoveSizes(Pkg);
+   RemoveStates(Pkg);
+
+   Pkg->CurrentVer = 0;
+   PkgState[Pkg->ID].InstallVer = 0;
+
+   AddStates(Pkg);
+   Update(Pkg);
+   AddSizes(Pkg);
+
+   // After the remove previously satisfied pseudo pkg could be now
+   // no longer satisfied, so we need to recheck the reverse dependencies
+   for (DepIterator d = Pkg.RevDependsList(); d.end() != true; ++d)
+   {
+      PkgIterator const P = d.ParentPkg();
+      if (P->CurrentVer != 0)
+	 recheck.insert(P.Index());
+   }
+
+   for (DepIterator d = V.DependsList(); d.end() != true; ++d)
+   {
+      PkgIterator const P = d.TargetPkg();
+      for (PrvIterator Prv = P.ProvidesList(); Prv.end() != true; ++Prv)
+      {
+	 PkgIterator const O = Prv.OwnerPkg();
+	 if (O->CurrentVer != 0)
+	    recheck.insert(O.Index());
+      }
+
+      if (P->CurrentVer != 0)
+	 recheck.insert(P.Index());
+   }
+
+   for (PrvIterator Prv = V.ProvidesList(); Prv.end() != true; Prv++)
+   {
+      for (DepIterator d = Prv.ParentPkg().RevDependsList();
+	   d.end() != true; ++d)
+      {
+	 PkgIterator const P = d.ParentPkg();
+	 if (P->CurrentVer == 0)
+	    continue;
+
+	    recheck.insert(P.Index());
+      }
+   }
+
+
+   return true;
+}
+									/*}}}*/
 // DepCache::Update - Figure out all the state information		/*{{{*/
 // ---------------------------------------------------------------------
 /* This will figure out the state of all the packages and all the 
@@ -609,9 +818,13 @@ void pkgDepCache::Update(OpProgress *Prog)
    iKeepCount = 0;
    iBrokenCount = 0;
    iBadCount = 0;
-   
+
+   std::set<unsigned long> recheck;
+
    // Perform the depends pass
    int Done = 0;
+   bool const checkMultiArch = APT::Configuration::getArchitectures().size() > 1;
+   unsigned long killed = 0;
    for (PkgIterator I = PkgBegin(); I.end() != true; I++,Done++)
    {
       if (Prog != 0 && Done%20 == 0)
@@ -619,7 +832,7 @@ void pkgDepCache::Update(OpProgress *Prog)
       for (VerIterator V = I.VersionList(); V.end() != true; V++)
       {
 	 unsigned char Group = 0;
-	 
+
 	 for (DepIterator D = V.DependsList(); D.end() != true; D++)
 	 {
 	    // Build the dependency state.
@@ -637,21 +850,158 @@ void pkgDepCache::Update(OpProgress *Prog)
 		D->Type == Dep::DpkgBreaks ||
 		D->Type == Dep::Obsoletes)
 	       State = ~State;
-	 }	 
+	 }
       }
 
-      // Compute the pacakge dependency state and size additions
+      // Compute the package dependency state and size additions
       AddSizes(I);
       UpdateVerState(I);
       AddStates(I);
+
+      if (checkMultiArch != true || I->CurrentVer == 0)
+	 continue;
+
+      VerIterator const V = I.CurrentVer();
+      if (V->MultiArch != Version::All)
+	 continue;
+
+      recheck.insert(I.Index());
+      --Done; // no progress if we need to recheck the package
+   }
+
+   if (checkMultiArch == true) {
+      /* FIXME: recheck breaks proper progress reporting as we don't know
+		how many packages we need to recheck. To lower the effect
+		a bit we increase with a kill, but we should do something more clever… */
+      while(recheck.empty() == false)
+	 for (std::set<unsigned long>::const_iterator p = recheck.begin();
+	     p != recheck.end();) {
+	    if (Prog != 0 && Done%20 == 0)
+	       Prog->Progress(Done);
+	    PkgIterator P = PkgIterator(*Cache, Cache->PkgP + *p);
+	    if (RemovePseudoInstalledPkg(P, recheck) == true) {
+	       ++killed;
+	       ++Done;
+	    }
+	    recheck.erase(p++);
+	 }
+
+      /* Okay, we have killed a great amount of pseudopackages -
+	 we have killed so many that we have now arch "all" packages
+	 without an installed pseudo package, but we NEED an installed
+	 pseudo package, so we will search now for a pseudo package
+	 we can install without breaking everything. */
+      for (GrpIterator G = Cache->GrpBegin(); G.end() != true; ++G)
+      {
+	 PkgIterator P = G.FindPkg("all");
+	 if (P.end() == true)
+	    continue;
+	 if (P->CurrentVer == 0)
+	    continue;
+	 bool installed = false;
+	 for (P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
+	 {
+	    if (strcmp(P.Arch(), "all") == 0)
+	       continue;
+	    if (P->CurrentVer == 0)
+	       continue;
+	    installed = true;
+	    break;
+	 }
+	 if (installed == false)
+	    recheck.insert(G.Index());
+      }
+
+      while (recheck.empty() != true)
+      {
+	 std::set<unsigned long>::const_iterator g = recheck.begin();
+	 unsigned long const G = *g;
+	 recheck.erase(g);
+	 if (unlikely(ReInstallPseudoForGroup(G, recheck) == false))
+	    _error->Warning(_("Internal error, group '%s' has no installable pseudo package"), GrpIterator(*Cache, Cache->GrpP + G).Name());
+      }
    }
 
-   if (Prog != 0)      
+   if (Prog != 0)
       Prog->Progress(Done);
 
    readStateFile(Prog);
 }
 									/*}}}*/
+// DepCache::ReInstallPseudoForGroup - MultiArch helper for Update()	/*{{{*/
+// ---------------------------------------------------------------------
+/* RemovePseudoInstalledPkg() is very successful. It even kills packages
+   to an amount that no pseudo package is left, but we need a pseudo package
+   for upgrading senarios so we need to reinstall one pseudopackage which
+   doesn't break everything. Thankfully we can't have architecture depending
+   negative dependencies so this problem is already eliminated */
+bool pkgDepCache::ReInstallPseudoForGroup(pkgCache::PkgIterator const &P, std::set<unsigned long> &recheck)
+{
+   if (P->CurrentVer != 0)
+      return true;
+   // recursive call for packages which provide this package
+   for (pkgCache::PrvIterator Prv = P.ProvidesList(); Prv.end() != true; ++Prv)
+      ReInstallPseudoForGroup(Prv.OwnerPkg(), recheck);
+   // check if we actually need to look at this group
+   unsigned long const G = P->Group;
+   std::set<unsigned long>::const_iterator Pi = recheck.find(G);
+   if (Pi == recheck.end())
+      return true;
+   recheck.erase(Pi); // remove here, so we can't fall into an endless loop
+   if (unlikely(ReInstallPseudoForGroup(G, recheck) == false))
+   {
+      recheck.insert(G);
+      return false;
+   }
+   return true;
+}
+bool pkgDepCache::ReInstallPseudoForGroup(unsigned long const &G, std::set<unsigned long> &recheck)
+{
+   std::vector<std::string> static const Archs = APT::Configuration::getArchitectures();
+   pkgCache::GrpIterator Grp(*Cache, Cache->GrpP + G);
+   if (unlikely(Grp.end() == true))
+      return false;
+   for (std::vector<std::string>::const_iterator a = Archs.begin();
+        a != Archs.end(); ++a)
+   {
+      pkgCache::PkgIterator P = Grp.FindPkg(*a);
+      if (P.end() == true)
+	 continue;
+      pkgCache::VerIterator allV = Grp.FindPkg("all").CurrentVer();
+      for (VerIterator V = P.VersionList(); V.end() != true; ++V)
+      {
+	 // search for the same version as the all package
+	 if (allV->Hash != V->Hash || strcmp(allV.VerStr(),V.VerStr()) != 0)
+	    continue;
+	 unsigned char const CurDepState = VersionState(V.DependsList(),DepInstall,DepInstMin,DepInstPolicy);
+	 // If it is broken, try to install dependencies first before retry
+	 if ((CurDepState & DepInstMin) != DepInstMin)
+	 {
+	    for (pkgCache::DepIterator D = V.DependsList(); D.end() != true; ++D)
+	    {
+	       if (D->Type != pkgCache::Dep::PreDepends && D->Type != pkgCache::Dep::Depends)
+		  continue;
+	       ReInstallPseudoForGroup(D.TargetPkg(), recheck);
+	    }
+	    unsigned char const CurDepState = VersionState(V.DependsList(),DepInstall,DepInstMin,DepInstPolicy);
+	    // if package ist still broken… try another arch
+	    if ((CurDepState & DepInstMin) != DepInstMin)
+	       break;
+	 }
+	 // dependencies satisfied: reinstall the package
+	 RemoveSizes(P);
+	 RemoveStates(P);
+	 P->CurrentVer = V.Index();
+	 PkgState[P->ID].InstallVer = V;
+	 AddStates(P);
+	 Update(P);
+	 AddSizes(P);
+	 return true;
+      }
+   }
+   return false;
+}
+									/*}}}*/
 // DepCache::Update - Update the deps list of a package	   		/*{{{*/
 // ---------------------------------------------------------------------
 /* This is a helper for update that only does the dep portion of the scan. 
@@ -813,6 +1163,10 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
    AddStates(Pkg);   
    Update(Pkg);
    AddSizes(Pkg);
+
+   // if we remove the pseudo package, we also need to remove the "real"
+   if (Pkg->CurrentVer != 0 && Pkg.CurrentVer().Pseudo() == true)
+      MarkDelete(Pkg.Group().FindPkg("all"), rPurge, Depth+1, FromUser);
 }
 									/*}}}*/
 // DepCache::IsDeleteOk - check if it is ok to remove this package	/*{{{*/
@@ -901,6 +1255,10 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
    Update(Pkg);
    AddSizes(Pkg);
 
+   // always trigger the install of the all package for a pseudo package
+   if (P.CandidateVerIter(*Cache).Pseudo() == true)
+      MarkInstall(Pkg.Group().FindPkg("all"), AutoInst, Depth, FromUser, ForceImportantDeps);
+
    if (AutoInst == false)
       return;
 
@@ -1099,6 +1457,9 @@ bool pkgDepCache::IsInstallOk(PkgIterator const &Pkg,bool AutoInst,
 /* */
 void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
 {
+   if (unlikely(Pkg.end() == true))
+      return;
+
    ActionGroup group(*this);
 
    RemoveSizes(Pkg);
@@ -1112,12 +1473,17 @@ void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
    
    AddStates(Pkg);
    AddSizes(Pkg);
+
+   if (unlikely(Pkg.CurrentVer().end() == true) || Pkg.CurrentVer().Pseudo() == false)
+      return;
+
+   SetReInstall(Pkg.Group().FindPkg("all"), To);
 }
 									/*}}}*/
 // DepCache::SetCandidateVersion - Change the candidate version		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-void pkgDepCache::SetCandidateVersion(VerIterator TargetVer)
+void pkgDepCache::SetCandidateVersion(VerIterator TargetVer, bool const &Pseudo)
 {
    ActionGroup group(*this);
 
@@ -1135,6 +1501,28 @@ void pkgDepCache::SetCandidateVersion(VerIterator TargetVer)
    AddStates(Pkg);
    Update(Pkg);
    AddSizes(Pkg);
+
+   if (TargetVer.Pseudo() == false || Pseudo == false)
+      return;
+
+   // the version was pseudo: set all other pseudos also
+   pkgCache::GrpIterator Grp = Pkg.Group();
+   for (Pkg = Grp.FindPkg("any"); Pkg.end() == false; ++Pkg)
+   {
+      StateCache &P = PkgState[Pkg->ID];
+      if (TargetVer.SimilarVer(P.CandidateVerIter(*this)) == true ||
+	  (P.CandidateVerIter(*this).Pseudo() == false &&
+	   strcmp(Pkg.Arch(), "all") != 0))
+	 continue;
+
+      for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
+      {
+	 if (TargetVer.SimilarVer(Ver) == false)
+	    continue;
+	 SetCandidateVersion(Ver, false);
+	 break;
+      }
+   }
 }
 
 void pkgDepCache::MarkAuto(const PkgIterator &Pkg, bool Auto)
@@ -1197,7 +1585,7 @@ const char *pkgDepCache::StateCache::StripEpoch(const char *Ver)
 // ---------------------------------------------------------------------
 /* The default just returns the highest available version that is not
    a source and automatic. */
-pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator Pkg)
+pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator const &Pkg)
 {
    /* Not source/not automatic versions cannot be a candidate version 
       unless they are already installed */
@@ -1232,7 +1620,7 @@ pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator Pkg)
 // Policy::IsImportantDep - True if the dependency is important		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgDepCache::Policy::IsImportantDep(DepIterator Dep)
+bool pkgDepCache::Policy::IsImportantDep(DepIterator const &Dep)
 {
    if(Dep.IsCritical())
       return true;
@@ -1254,54 +1642,6 @@ bool pkgDepCache::Policy::IsImportantDep(DepIterator Dep)
    return false;
 }
 									/*}}}*/
-pkgDepCache::DefaultRootSetFunc::DefaultRootSetFunc()			/*{{{*/
-  : constructedSuccessfully(false)
-{
-  Configuration::Item const *Opts;
-  Opts = _config->Tree("APT::NeverAutoRemove");
-  if (Opts != 0 && Opts->Child != 0)
-    {
-      Opts = Opts->Child;
-      for (; Opts != 0; Opts = Opts->Next)
-	{
-	  if (Opts->Value.empty() == true)
-	    continue;
-
-	  regex_t *p = new regex_t;
-	  if(regcomp(p,Opts->Value.c_str(),
-		     REG_EXTENDED | REG_ICASE | REG_NOSUB) != 0)
-	    {
-	      regfree(p);
-	      delete p;
-	      _error->Error("Regex compilation error for APT::NeverAutoRemove");
-	      return;
-	    }
-
-	  rootSetRegexp.push_back(p);
-	}
-    }
-
-  constructedSuccessfully = true;
-}
-									/*}}}*/
-pkgDepCache::DefaultRootSetFunc::~DefaultRootSetFunc()			/*{{{*/
-{
-  for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
-    {
-      regfree(rootSetRegexp[i]);
-      delete rootSetRegexp[i];
-    }
-}
-									/*}}}*/
-bool pkgDepCache::DefaultRootSetFunc::InRootSet(const pkgCache::PkgIterator &pkg) /*{{{*/
-{
-   for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
-      if (regexec(rootSetRegexp[i], pkg.Name(), 0, 0, 0) == 0)
-	 return true;
-
-   return false;
-}
-									/*}}}*/
 pkgDepCache::InRootSetFunc *pkgDepCache::GetRootSetFunc()		/*{{{*/
 {
   DefaultRootSetFunc *f = new DefaultRootSetFunc;
@@ -1339,7 +1679,7 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
 
       // debug output
       if(debug_autoremove && PkgState[p->ID].Flags & Flag::Auto)
-  	 std::clog << "AutoDep: " << p.Name() << std::endl;
+  	 std::clog << "AutoDep: " << p.FullName() << std::endl;
    }
 
    // init vars
@@ -1353,8 +1693,11 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
    {
       if(!(PkgState[p->ID].Flags & Flag::Auto) ||
 	  (p->Flags & Flag::Essential) ||
-	  userFunc.InRootSet(p))
-          
+	  userFunc.InRootSet(p) ||
+	  // be nice even then a required package violates the policy (#583517)
+	  // and do the full mark process also for required packages
+	  (p.CurrentVer().end() != true &&
+	   p.CurrentVer()->Priority == pkgCache::State::Required))
       {
 	 // the package is installed (and set to keep)
 	 if(PkgState[p->ID].Keep() && !p.CurrentVer().end())
@@ -1373,13 +1716,18 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
 // MarkPackage - mark a single package in Mark-and-Sweep		/*{{{*/
 void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 			      const pkgCache::VerIterator &ver,
-			      bool follow_recommends,
-			      bool follow_suggests)
+			      bool const &follow_recommends,
+			      bool const &follow_suggests)
 {
    pkgDepCache::StateCache &state = PkgState[pkg->ID];
-   VerIterator currver            = pkg.CurrentVer();
-   VerIterator candver            = state.CandidateVerIter(*this);
-   VerIterator instver            = state.InstVerIter(*this);
+
+   // if we are marked already we are done
+   if(state.Marked)
+      return;
+
+   VerIterator const currver = pkg.CurrentVer();
+   VerIterator const candver = state.CandidateVerIter(*this);
+   VerIterator const instver = state.InstVerIter(*this);
 
 #if 0
    // If a package was garbage-collected but is now being marked, we
@@ -1405,15 +1753,11 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
       !(ver == currver && instver.end() && !ver.end()))
       return;
 
-   // if we are marked already we are done
-   if(state.Marked)
-      return;
+   bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove", false);
 
-   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove", false);
-   
    if(debug_autoremove)
      {
-       std::clog << "Marking: " << pkg.Name();
+       std::clog << "Marking: " << pkg.FullName();
        if(!ver.end())
 	 std::clog << " " << ver.VerStr();
        if(!currver.end())
@@ -1425,8 +1769,31 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 
    state.Marked=true;
 
-   if(!ver.end())
+   if(ver.end() == true)
+      return;
+
+   // If the version belongs to a Multi-Arch all package
+   // we will mark all others in this Group with this version also
+   if (ver->MultiArch == pkgCache::Version::All &&
+	strcmp(ver.Arch(true), "all") == 0)
    {
+      GrpIterator G = pkg.Group();
+      const char* const VerStr = ver.VerStr();
+      for (PkgIterator P = G.FindPkg("any");
+	   P.end() != true; P = G.NextPkg(P))
+      {
+	 for (VerIterator V = P.VersionList();
+	      V.end() != true; ++V)
+	 {
+	    if (ver->Hash != V->Hash ||
+		strcmp(VerStr, V.VerStr()) != 0)
+	       continue;
+	    MarkPackage(P, V, follow_recommends, follow_suggests);
+	    break;
+	 }
+      }
+   }
+
      for(DepIterator d = ver.DependsList(); !d.end(); ++d)
      {
 	if(d->Type == Dep::Depends ||
@@ -1444,10 +1811,9 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 	      {
 		if(debug_autoremove)
 		  {
-		    std::clog << "Following dep: " << d.ParentPkg().Name()
+		    std::clog << "Following dep: " << d.ParentPkg().FullName()
 			      << " " << d.ParentVer().VerStr() << " "
-			      << d.DepType() << " "
-			      << d.TargetPkg().Name();
+			      << d.DepType() << " " << d.TargetPkg().FullName();
 		    if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
 		      {
 			std::clog << " (" << d.CompType() << " "
@@ -1455,7 +1821,7 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 		      }
 		    std::clog << std::endl;
 		  }
-		 MarkPackage(V.ParentPkg(), V, 
+		 MarkPackage(V.ParentPkg(), V,
 			     follow_recommends, follow_suggests);
 	      }
 	   }
@@ -1468,17 +1834,16 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 	      {
 		if(debug_autoremove)
 		  {
-		    std::clog << "Following dep: " << d.ParentPkg().Name()
-			      << " " << d.ParentVer().VerStr() << " "
-			      << d.DepType() << " "
-			      << d.TargetPkg().Name();
+		    std::clog << "Following dep: " << d.ParentPkg().FullName() << " "
+			      << d.ParentVer().VerStr() << " "
+			      << d.DepType() << " " << d.TargetPkg().FullName() << " ";
 		    if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
 		      {
 			std::clog << " (" << d.CompType() << " "
 				  << d.TargetVer() << ")";
 		      }
 		    std::clog << ", provided by "
-			      << prv.OwnerPkg().Name() << " "
+			      << prv.OwnerPkg().FullName() << " "
 			      << prv.OwnerVer().VerStr()
 			      << std::endl;
 		  }
@@ -1489,7 +1854,6 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
 	   }
 	}
      }
-   }
 }
 									/*}}}*/
 bool pkgDepCache::Sweep()						/*{{{*/
@@ -1511,7 +1875,7 @@ bool pkgDepCache::Sweep()						/*{{{*/
      {
 	state.Garbage=true;
 	if(debug_autoremove)
-	   std::cout << "Garbage: " << p.Name() << std::endl;
+	   std::clog << "Garbage: " << p.FullName() << std::endl;
      }
   }   
 
diff --git a/apt-pkg/depcache.h b/apt-pkg/depcache.h
index 0306861a1..45276dc95 100644
--- a/apt-pkg/depcache.h
+++ b/apt-pkg/depcache.h
@@ -38,14 +38,14 @@
 #ifndef PKGLIB_DEPCACHE_H
 #define PKGLIB_DEPCACHE_H
 
-
+#include <apt-pkg/configuration.h>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/progress.h>
-
-#include <regex.h>
+#include <apt-pkg/error.h>
 
 #include <vector>
 #include <memory>
+#include <set>
 
 class pkgDepCache : protected pkgCache::Namespace
 {
@@ -78,8 +78,8 @@ class pkgDepCache : protected pkgCache::Namespace
     */
    void MarkPackage(const pkgCache::PkgIterator &pkg,
 		    const pkgCache::VerIterator &ver,
-		    bool follow_recommends,
-		    bool follow_suggests);
+		    bool const &follow_recommends,
+		    bool const &follow_suggests);
 
    /** \brief Update the Marked field of all packages.
     *
@@ -183,22 +183,13 @@ class pkgDepCache : protected pkgCache::Namespace
    /** \brief Returns \b true for packages matching a regular
     *  expression in APT::NeverAutoRemove.
     */
-   class DefaultRootSetFunc : public InRootSetFunc
+   class DefaultRootSetFunc : public InRootSetFunc, public Configuration::MatchAgainstConfig
    {
-     std::vector<regex_t *> rootSetRegexp;
-     bool constructedSuccessfully;
-
    public:
-     DefaultRootSetFunc();
-     ~DefaultRootSetFunc();
-
-     /** \return \b true if the class initialized successfully, \b
-      *  false otherwise.  Used to avoid throwing an exception, since
-      *  APT classes generally don't.
-      */
-     bool wasConstructedSuccessfully() const { return constructedSuccessfully; }
+     DefaultRootSetFunc() : Configuration::MatchAgainstConfig("APT::NeverRemove") {};
+     virtual ~DefaultRootSetFunc() {};
 
-     bool InRootSet(const pkgCache::PkgIterator &pkg);
+     bool InRootSet(const pkgCache::PkgIterator &pkg) { return pkg.end() == true && Match(pkg.Name()); };
    };
 
    struct StateCache
@@ -265,8 +256,8 @@ class pkgDepCache : protected pkgCache::Namespace
    {
       public:
       
-      virtual VerIterator GetCandidateVer(PkgIterator Pkg);
-      virtual bool IsImportantDep(DepIterator Dep);
+      virtual VerIterator GetCandidateVer(PkgIterator const &Pkg);
+      virtual bool IsImportantDep(DepIterator const &Dep);
       
       virtual ~Policy() {};
    };
@@ -285,9 +276,11 @@ class pkgDepCache : protected pkgCache::Namespace
    pkgCache *Cache;
    StateCache *PkgState;
    unsigned char *DepState;
-   
-   double iUsrSize;
-   double iDownloadSize;
+
+   /** Stores the space changes after installation */
+   signed long long iUsrSize;
+   /** Stores how much we need to download to get the packages */
+   unsigned long long iDownloadSize;
    unsigned long iInstCount;
    unsigned long iDelCount;
    unsigned long iKeepCount;
@@ -320,8 +313,9 @@ class pkgDepCache : protected pkgCache::Namespace
    void Update(PkgIterator const &P);
    
    // Count manipulators
-   void AddSizes(const PkgIterator &Pkg,signed long Mult = 1);
-   inline void RemoveSizes(const PkgIterator &Pkg) {AddSizes(Pkg,-1);};
+   void AddSizes(const PkgIterator &Pkg, bool const &Invert = false);
+   inline void RemoveSizes(const PkgIterator &Pkg) {AddSizes(Pkg, true);};
+   void AddSizes(const PkgIterator &Pkg,signed long Mult) __deprecated;
    void AddStates(const PkgIterator &Pkg,int Add = 1);
    inline void RemoveStates(const PkgIterator &Pkg) {AddStates(Pkg,-1);};
    
@@ -330,14 +324,17 @@ class pkgDepCache : protected pkgCache::Namespace
    // Legacy.. We look like a pkgCache
    inline operator pkgCache &() {return *Cache;};
    inline Header &Head() {return *Cache->HeaderP;};
+   inline GrpIterator GrpBegin() {return Cache->GrpBegin();};
    inline PkgIterator PkgBegin() {return Cache->PkgBegin();};
+   inline GrpIterator FindGrp(string const &Name) {return Cache->FindGrp(Name);};
    inline PkgIterator FindPkg(string const &Name) {return Cache->FindPkg(Name);};
+   inline PkgIterator FindPkg(string const &Name, string const &Arch) {return Cache->FindPkg(Name, Arch);};
 
    inline pkgCache &GetCache() {return *Cache;};
    inline pkgVersioningSystem &VS() {return *Cache->VS;};
    
    // Policy implementation
-   inline VerIterator GetCandidateVer(PkgIterator Pkg) {return LocalPolicy->GetCandidateVer(Pkg);};
+   inline VerIterator GetCandidateVer(PkgIterator const &Pkg) {return LocalPolicy->GetCandidateVer(Pkg);};
    inline bool IsImportantDep(DepIterator Dep) {return LocalPolicy->IsImportantDep(Dep);};
    inline Policy &GetPolicy() {return *LocalPolicy;};
    
@@ -398,7 +395,7 @@ class pkgDepCache : protected pkgCache::Namespace
 		    bool ForceImportantDeps = false);
 
    void SetReInstall(PkgIterator const &Pkg,bool To);
-   void SetCandidateVersion(VerIterator TargetVer);
+   void SetCandidateVersion(VerIterator TargetVer, bool const &Pseudo = true);
 
    /** Set the "is automatically installed" flag of Pkg. */
    void MarkAuto(const PkgIterator &Pkg, bool Auto);
@@ -442,16 +439,13 @@ class pkgDepCache : protected pkgCache::Namespace
    virtual bool IsDeleteOk(const PkgIterator &Pkg,bool Purge = false,
 			    unsigned long Depth = 0, bool FromUser = true);
 
-   // This is for debuging
-   void Update(OpProgress *Prog = 0);
-
    // read persistent states
    bool readStateFile(OpProgress *prog);
-   bool writeStateFile(OpProgress *prog, bool InstalledOnly=false);
+   bool writeStateFile(OpProgress *prog, bool InstalledOnly=true);
    
    // Size queries
-   inline double UsrSize() {return iUsrSize;};
-   inline double DebSize() {return iDownloadSize;};
+   inline signed long long UsrSize() {return iUsrSize;};
+   inline unsigned long long DebSize() {return iDownloadSize;};
    inline unsigned long DelCount() {return iDelCount;};
    inline unsigned long KeepCount() {return iKeepCount;};
    inline unsigned long InstCount() {return iInstCount;};
@@ -460,9 +454,17 @@ class pkgDepCache : protected pkgCache::Namespace
    inline unsigned long BadCount() {return iBadCount;};
 
    bool Init(OpProgress *Prog);
-   
+   // Generate all state information
+   void Update(OpProgress *Prog = 0);
+
    pkgDepCache(pkgCache *Cache,Policy *Plcy = 0);
    virtual ~pkgDepCache();
+
+   private:
+   // Helper for Update(OpProgress) to remove pseudoinstalled arch all packages
+   bool RemovePseudoInstalledPkg(PkgIterator &Pkg, std::set<unsigned long> &recheck);
+   bool ReInstallPseudoForGroup(unsigned long const &Grp, std::set<unsigned long> &recheck);
+   bool ReInstallPseudoForGroup(pkgCache::PkgIterator const &P, std::set<unsigned long> &recheck);
 };
 
 #endif
diff --git a/apt-pkg/indexcopy.cc b/apt-pkg/indexcopy.cc
index 53eb11172..621c18716 100644
--- a/apt-pkg/indexcopy.cc
+++ b/apt-pkg/indexcopy.cc
@@ -27,6 +27,8 @@
 #include <sstream>
 #include <unistd.h>
 #include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
 #include <stdio.h>
 									/*}}}*/
 
@@ -590,66 +592,34 @@ bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
       indexRecords *MetaIndex = new indexRecords;
       string prefix = *I; 
 
+      string const releasegpg = *I+"Release.gpg";
+      string const release = *I+"Release";
+
       // a Release.gpg without a Release should never happen
-      if(!FileExists(*I+"Release"))
+      if(FileExists(release) == false)
       {
 	 delete MetaIndex;
 	 continue;
       }
 
-
-      // verify the gpg signature of "Release"
-      // gpg --verify "*I+Release.gpg", "*I+Release"
-      const char *Args[400];
-      unsigned int i = 0;
-
-      string gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv");
-      string pubringpath = _config->Find("Apt::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg");
-      string releasegpg = *I+"Release.gpg";
-      string release = *I+"Release";
-
-      Args[i++] = gpgvpath.c_str();
-      Args[i++] = "--keyring";
-      Args[i++] = pubringpath.c_str();
-      Configuration::Item const *Opts;
-      Opts = _config->Tree("Acquire::gpgv::Options");
-      if (Opts != 0)
-      {
-         Opts = Opts->Child;
-	 for (; Opts != 0; Opts = Opts->Next)
-         {
-            if (Opts->Value.empty() == true)
-               continue;
-            Args[i++] = Opts->Value.c_str();
-	    if(i >= 390) { 
-	       _error->Error("Argument list from Acquire::gpgv::Options too long. Exiting.");
-	       return false;
-	    }
-         }
-      }
-      
-      Args[i++] = releasegpg.c_str();
-      Args[i++] = release.c_str();
-      Args[i++] = NULL;
-      
       pid_t pid = ExecFork();
       if(pid < 0) {
 	 _error->Error("Fork failed");
 	 return false;
       }
-      if(pid == 0) {
-	 execvp(gpgvpath.c_str(), (char**)Args);
-      }
+      if(pid == 0)
+	 RunGPGV(release, releasegpg);
+
       if(!ExecWait(pid, "gpgv")) {
 	 _error->Warning("Signature verification failed for: %s",
-			 string(*I+"Release.gpg").c_str());
+			 releasegpg.c_str());
 	 // something went wrong, don't copy the Release.gpg
 	 // FIXME: delete any existing gpg file?
 	 continue;
       }
 
       // Open the Release file and add it to the MetaIndex
-      if(!MetaIndex->Load(*I+"Release"))
+      if(!MetaIndex->Load(release))
       {
 	 _error->Error("%s",MetaIndex->ErrorText.c_str());
 	 return false;
@@ -679,6 +649,103 @@ bool SigVerify::CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
    return true;
 }
 									/*}}}*/
+// SigVerify::RunGPGV - returns the command needed for verify		/*{{{*/
+// ---------------------------------------------------------------------
+/* Generating the commandline for calling gpgv is somehow complicated as
+   we need to add multiple keyrings and user supplied options. Also, as
+   the cdrom code currently can not use the gpgv method we have two places
+   these need to be done - so the place for this method is wrong but better
+   than code duplication… */
+bool SigVerify::RunGPGV(std::string const &File, std::string const &FileGPG,
+			int const &statusfd, int fd[2])
+{
+   string const gpgvpath = _config->Find("Dir::Bin::gpg", "/usr/bin/gpgv");
+   // FIXME: remove support for deprecated APT::GPGV setting
+   string const trustedFile = _config->FindFile("Dir::Etc::Trusted",
+		_config->Find("APT::GPGV::TrustedKeyring", "/etc/apt/trusted.gpg").c_str());
+   string const trustedPath = _config->FindDir("Dir::Etc::TrustedParts", "/etc/apt/trusted.gpg.d");
+
+   bool const Debug = _config->FindB("Debug::Acquire::gpgv", false);
+
+   if (Debug == true)
+   {
+      std::clog << "gpgv path: " << gpgvpath << std::endl;
+      std::clog << "Keyring file: " << trustedFile << std::endl;
+      std::clog << "Keyring path: " << trustedPath << std::endl;
+   }
+
+   std::vector<string> keyrings = GetListOfFilesInDir(trustedPath, "gpg", false);
+   if (FileExists(trustedFile) == true)
+      keyrings.push_back(trustedFile);
+
+   std::vector<const char *> Args;
+   Args.reserve(30);
+
+   if (keyrings.empty() == true)
+      return false;
+
+   Args.push_back(gpgvpath.c_str());
+   Args.push_back("--ignore-time-conflict");
+
+   if (statusfd != -1)
+   {
+      Args.push_back("--status-fd");
+      char fd[10];
+      snprintf(fd, sizeof(fd), "%i", statusfd);
+      Args.push_back(fd);
+   }
+
+   for (vector<string>::const_iterator K = keyrings.begin();
+	K != keyrings.end(); ++K)
+   {
+      Args.push_back("--keyring");
+      Args.push_back(K->c_str());
+   }
+
+   Configuration::Item const *Opts;
+   Opts = _config->Tree("Acquire::gpgv::Options");
+   if (Opts != 0)
+   {
+      Opts = Opts->Child;
+      for (; Opts != 0; Opts = Opts->Next)
+      {
+	 if (Opts->Value.empty() == true)
+	    continue;
+	 Args.push_back(Opts->Value.c_str());
+      }
+   }
+
+   Args.push_back(FileGPG.c_str());
+   Args.push_back(File.c_str());
+   Args.push_back(NULL);
+
+   if (Debug == true)
+   {
+      std::clog << "Preparing to exec: " << gpgvpath;
+      for (std::vector<const char *>::const_iterator a = Args.begin(); *a != NULL; ++a)
+	 std::clog << " " << *a;
+      std::clog << std::endl;
+   }
+
+   if (statusfd != -1)
+   {
+      int const nullfd = open("/dev/null", O_RDONLY);
+      close(fd[0]);
+      // Redirect output to /dev/null; we read from the status fd
+      dup2(nullfd, STDOUT_FILENO);
+      dup2(nullfd, STDERR_FILENO);
+      // Redirect the pipe to the status fd (3)
+      dup2(fd[1], statusfd);
+
+      putenv((char *)"LANG=");
+      putenv((char *)"LC_ALL=");
+      putenv((char *)"LC_MESSAGES=");
+   }
+
+   execvp(gpgvpath.c_str(), (char **) &Args[0]);
+   return true;
+}
+									/*}}}*/
 bool TranslationsCopy::CopyTranslations(string CDROM,string Name,	/*{{{*/
 				vector<string> &List, pkgCdromStatus *log)
 {
diff --git a/apt-pkg/indexcopy.h b/apt-pkg/indexcopy.h
index 9e5ad4e43..6fcd3b8ce 100644
--- a/apt-pkg/indexcopy.h
+++ b/apt-pkg/indexcopy.h
@@ -89,6 +89,15 @@ class SigVerify								/*{{{*/
  public:
    bool CopyAndVerify(string CDROM,string Name,vector<string> &SigList,
 		      vector<string> PkgList,vector<string> SrcList);
+
+   /** \brief generates and run the command to verify a file with gpgv */
+   static bool RunGPGV(std::string const &File, std::string const &FileOut,
+		       int const &statusfd, int fd[2]);
+   inline static bool RunGPGV(std::string const &File, std::string const &FileOut,
+			      int const &statusfd = -1) {
+      int fd[2];
+      return RunGPGV(File, FileOut, statusfd, fd);
+   };
 };
 									/*}}}*/
 
diff --git a/apt-pkg/indexfile.cc b/apt-pkg/indexfile.cc
index 2f5bc2439..37be87055 100644
--- a/apt-pkg/indexfile.cc
+++ b/apt-pkg/indexfile.cc
@@ -8,9 +8,9 @@
    ##################################################################### */
 									/*}}}*/
 // Include Files							/*{{{*/
-#include <apt-pkg/configuration.h>
 #include <apt-pkg/indexfile.h>
 #include <apt-pkg/error.h>
+#include <apt-pkg/aptconfiguration.h>
 
 #include <clocale>
 #include <cstring>
@@ -66,34 +66,23 @@ string pkgIndexFile::SourceInfo(pkgSrcRecords::Parser const &Record,
    return string();
 }
 									/*}}}*/
-// IndexFile::TranslationsAvailable - Check if will use Translation    /*{{{*/
+// IndexFile::TranslationsAvailable - Check if will use Translation	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgIndexFile::TranslationsAvailable()
-{
-  const string Translation = _config->Find("APT::Acquire::Translation");
-  
-  if (Translation.compare("none") != 0)
-    return CheckLanguageCode(LanguageCode().c_str());
-  else
-    return false;
+bool pkgIndexFile::TranslationsAvailable() {
+	return (APT::Configuration::getLanguages().empty() != true);
 }
 									/*}}}*/
-// IndexFile::CheckLanguageCode - Check the Language Code   	        /*{{{*/
+// IndexFile::CheckLanguageCode - Check the Language Code		/*{{{*/
 // ---------------------------------------------------------------------
-/* */
-/* common cases: de_DE, de_DE@euro, de_DE.UTF-8, de_DE.UTF-8@euro,
-                 de_DE.ISO8859-1, tig_ER
-                 more in /etc/gdm/locale.conf 
-*/
-
-bool pkgIndexFile::CheckLanguageCode(const char *Lang)
+/* No intern need for this method anymore as the check for correctness
+   is already done in getLanguages(). Note also that this check is
+   rather bad (doesn't take three character like ast into account).
+   TODO: Remove method with next API break */
+__attribute__ ((deprecated)) bool pkgIndexFile::CheckLanguageCode(const char *Lang)
 {
-  if (strlen(Lang) == 2 || 
-      strlen(Lang) == 3 ||
-      (strlen(Lang) > 3 && Lang[3] == '_') ||
-      (strlen(Lang) == 5 && Lang[2] == '_'))
-  return true;
+  if (strlen(Lang) == 2 || (strlen(Lang) == 5 && Lang[2] == '_'))
+    return true;
 
   if (strcmp(Lang,"C") != 0)
     _error->Warning("Wrong language code %s", Lang);
@@ -101,37 +90,14 @@ bool pkgIndexFile::CheckLanguageCode(const char *Lang)
   return false;
 }
 									/*}}}*/
-// IndexFile::LanguageCode - Return the Language Code            	/*{{{*/
+// IndexFile::LanguageCode - Return the Language Code			/*{{{*/
 // ---------------------------------------------------------------------
-/* return the language code */
-string pkgIndexFile::LanguageCode()
-{
-  const string Translation = _config->Find("APT::Acquire::Translation");
-
-  if (Translation.compare("environment") == 0) 
-  {
-     string lang = std::setlocale(LC_MESSAGES,NULL);
-
-     // we have a mapping of the language codes that contains all the language
-     // codes that need the country code as well 
-     // (like pt_BR, pt_PT, sv_SE, zh_*, en_*)
-     const char *need_full_langcode[] = { "en_", 
-					  "pt_",
-					  "sv_",
-					  "zh_", 
-					  NULL };
-     for(const char **s = need_full_langcode;*s != NULL; s++)
-	if(lang.find(*s) == 0)
-	   return lang.substr(0,5);
-     
-     if(lang.find("_") != lang.npos)
-	return lang.substr(0, lang.find("_"));
-     else if(lang.find(".") != lang.npos)
-	return lang.substr(0, lang.find("."));
-     else
-	return lang;
-  }
-  else 
-     return Translation;
+/* As we have now possibly more than one LanguageCode this method is
+   supersided by a) private classmembers or b) getLanguages().
+   TODO: Remove method with next API break */
+__attribute__ ((deprecated)) string pkgIndexFile::LanguageCode() {
+	if (TranslationsAvailable() == false)
+		return "";
+	return APT::Configuration::getLanguages()[0];
 }
 									/*}}}*/
diff --git a/apt-pkg/indexfile.h b/apt-pkg/indexfile.h
index 3cc501629..2b5ae6342 100644
--- a/apt-pkg/indexfile.h
+++ b/apt-pkg/indexfile.h
@@ -74,8 +74,12 @@ class pkgIndexFile
    virtual bool Exists() const = 0;
    virtual bool HasPackages() const = 0;
    virtual unsigned long Size() const = 0;
-   virtual bool Merge(pkgCacheGenerator &/*Gen*/,OpProgress &/*Prog*/) const {return false;};
-   virtual bool MergeFileProvides(pkgCacheGenerator &/*Gen*/,OpProgress &/*Prog*/) const {return true;};
+   virtual bool Merge(pkgCacheGenerator &/*Gen*/,OpProgress* /*Prog*/) const { return false; };
+   __deprecated virtual bool Merge(pkgCacheGenerator &Gen, OpProgress &Prog) const
+      { return Merge(Gen, &Prog); };
+   virtual bool MergeFileProvides(pkgCacheGenerator &/*Gen*/,OpProgress* /*Prog*/) const {return true;};
+   __deprecated virtual bool MergeFileProvides(pkgCacheGenerator &Gen, OpProgress &Prog) const
+      {return MergeFileProvides(Gen, &Prog);};
    virtual pkgCache::PkgFileIterator FindInCache(pkgCache &Cache) const;
 
    static bool TranslationsAvailable();
diff --git a/apt-pkg/indexrecords.cc b/apt-pkg/indexrecords.cc
index 1fc27b1a1..eb9a36866 100644
--- a/apt-pkg/indexrecords.cc
+++ b/apt-pkg/indexrecords.cc
@@ -7,8 +7,11 @@
 #include <apt-pkg/tagfile.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/configuration.h>
 #include <apti18n.h>
 #include <sys/stat.h>
+#include <clocale>
+
 									/*}}}*/
 string indexRecords::GetDist() const
 {
@@ -26,11 +29,21 @@ string indexRecords::GetExpectedDist() const
    return this->ExpectedDist;
 }
 
+time_t indexRecords::GetValidUntil() const
+{
+   return this->ValidUntil;
+}
+
 const indexRecords::checkSum *indexRecords::Lookup(const string MetaKey)
 {
    return Entries[MetaKey];
 }
 
+bool indexRecords::Exists(string const &MetaKey) const
+{
+   return Entries.count(MetaKey) == 1;
+}
+
 bool indexRecords::Load(const string Filename)				/*{{{*/
 {
    FileFd Fd(Filename, FileFd::ReadOnly);
@@ -80,9 +93,40 @@ bool indexRecords::Load(const string Filename)				/*{{{*/
    {
       strprintf(ErrorText, _("No Hash entry in Release file %s"), Filename.c_str());
       return false;
-   }  
+   }
+
+   string Label = Section.FindS("Label");
+   string StrDate = Section.FindS("Date");
+   string StrValidUntil = Section.FindS("Valid-Until");
+
+   // if we have a Valid-Until header in the Release file, use it as default
+   if (StrValidUntil.empty() == false)
+   {
+      if(RFC1123StrToTime(StrValidUntil.c_str(), ValidUntil) == false)
+      {
+	 strprintf(ErrorText, _("Invalid 'Valid-Until' entry in Release file %s"), Filename.c_str());
+	 return false;
+      }
+   }
+   // get the user settings for this archive and use what expires earlier
+   int MaxAge = _config->FindI("Acquire::Max-ValidTime", 0);
+   if (Label.empty() == true)
+      MaxAge = _config->FindI(string("Acquire::Max-ValidTime::" + Label).c_str(), MaxAge);
+
+   if(MaxAge == 0) // No user settings, use the one from the Release file
+      return true;
+
+   time_t date;
+   if (RFC1123StrToTime(StrDate.c_str(), date) == false)
+   {
+      strprintf(ErrorText, _("Invalid 'Date' entry in Release file %s"), Filename.c_str());
+      return false;
+   }
+   date += 24*60*60*MaxAge;
+
+   if (ValidUntil == 0 || ValidUntil > date)
+      ValidUntil = date;
 
-   string Strdate = Section.FindS("Date"); // FIXME: verify this somehow?
    return true;
 }
 									/*}}}*/
@@ -160,6 +204,6 @@ indexRecords::indexRecords()
 }
 
 indexRecords::indexRecords(const string ExpectedDist) :
-   ExpectedDist(ExpectedDist)
+   ExpectedDist(ExpectedDist), ValidUntil(0)
 {
 }
diff --git a/apt-pkg/indexrecords.h b/apt-pkg/indexrecords.h
index 468d2bd0f..5b532c1a5 100644
--- a/apt-pkg/indexrecords.h
+++ b/apt-pkg/indexrecords.h
@@ -12,6 +12,7 @@
 
 #include <map>
 #include <vector>
+#include <ctime>
 
 class indexRecords
 {
@@ -25,6 +26,8 @@ class indexRecords
    string Dist;
    string Suite;
    string ExpectedDist;
+   time_t ValidUntil;
+
    std::map<string,checkSum *> Entries;
 
    public:
@@ -34,10 +37,13 @@ class indexRecords
 
    // Lookup function
    virtual const checkSum *Lookup(const string MetaKey);
+   /** \brief tests if a checksum for this file is available */
+   bool Exists(string const &MetaKey) const;
    std::vector<std::string> MetaKeys();
 
    virtual bool Load(string Filename);
    string GetDist() const;
+   time_t GetValidUntil() const;
    virtual bool CheckDist(const string MaybeDist) const;
    string GetExpectedDist() const;
    virtual ~indexRecords(){};
diff --git a/apt-pkg/init.cc b/apt-pkg/init.cc
index e2f847ed2..7a332c86e 100644
--- a/apt-pkg/init.cc
+++ b/apt-pkg/init.cc
@@ -78,6 +78,11 @@ bool pkgInitConfig(Configuration &Cnf)
    Cnf.Set("Dir::Log::Terminal","term.log");
    Cnf.Set("Dir::Log::History","history.log");
 
+   Cnf.Set("Dir::Ignore-Files-Silently::", "~$");
+   Cnf.Set("Dir::Ignore-Files-Silently::", "\\.disabled$");
+   Cnf.Set("Dir::Ignore-Files-Silently::", "\\.bak$");
+   Cnf.Set("Dir::Ignore-Files-Silently::", "\\.dpkg-[a-z]+$");
+
    // Translation
    Cnf.Set("APT::Acquire::Translation", "environment");
 
@@ -95,10 +100,10 @@ bool pkgInitConfig(Configuration &Cnf)
 
    // Read the configuration parts dir
    string Parts = Cnf.FindDir("Dir::Etc::parts");
-   if (FileExists(Parts) == true)
+   if (DirectoryExists(Parts) == true)
       Res &= ReadConfigDir(Cnf,Parts);
    else
-      _error->WarningE("FileExists",_("Unable to read %s"),Parts.c_str());
+      _error->WarningE("DirectoryExists",_("Unable to read %s"),Parts.c_str());
 
    // Read the main config file
    string FName = Cnf.FindFile("Dir::Etc::main");
diff --git a/apt-pkg/init.h b/apt-pkg/init.h
index f0757f644..eeb0a767d 100644
--- a/apt-pkg/init.h
+++ b/apt-pkg/init.h
@@ -21,8 +21,8 @@
 // reverse-dependencies of libapt-pkg against the new SONAME.
 // Non-ABI-Breaks should only increase RELEASE number.
 // See also buildlib/libversion.mak
-#define APT_PKG_MAJOR 4
-#define APT_PKG_MINOR 8
+#define APT_PKG_MAJOR  4
+#define APT_PKG_MINOR 10
 #define APT_PKG_RELEASE 0
     
 extern const char *pkgVersion;
diff --git a/apt-pkg/makefile b/apt-pkg/makefile
index bdd49c089..4e5ec107f 100644
--- a/apt-pkg/makefile
+++ b/apt-pkg/makefile
@@ -14,7 +14,7 @@ include ../buildlib/libversion.mak
 LIBRARY=apt-pkg
 MAJOR=$(LIBAPTPKG_MAJOR)
 MINOR=$(LIBAPTPKG_RELEASE)
-SLIBS=$(PTHREADLIB) $(INTLLIBS) -lutil -ldl
+SLIBS=$(PTHREADLIB) $(INTLLIBS) -lutil -ldl -lz
 APT_DOMAIN:=libapt-pkg$(LIBAPTPKG_MAJOR)
 
 # Source code for the contributed non-core things
@@ -25,7 +25,7 @@ SOURCE = contrib/mmap.cc contrib/error.cc contrib/strutl.cc \
 	 contrib/fileutl.cc 
 HEADERS = mmap.h error.h configuration.h fileutl.h  cmndline.h netrc.h\
 	  md5.h crc-16.h cdromutl.h strutl.h sptr.h sha1.h sha256.h hashes.h \
-	  macros.h
+	  macros.h weakptr.h
 
 # Source code for the core main library
 SOURCE+= pkgcache.cc version.cc depcache.cc \
@@ -35,14 +35,15 @@ SOURCE+= pkgcache.cc version.cc depcache.cc \
 	 srcrecords.cc cachefile.cc versionmatch.cc policy.cc \
 	 pkgsystem.cc indexfile.cc pkgcachegen.cc acquire-item.cc \
 	 indexrecords.cc vendor.cc vendorlist.cc cdrom.cc indexcopy.cc \
-	 aptconfiguration.cc
+	 aptconfiguration.cc cachefilter.cc cacheset.cc
 HEADERS+= algorithms.h depcache.h pkgcachegen.h cacheiterators.h \
 	  orderlist.h sourcelist.h packagemanager.h tagfile.h \
 	  init.h pkgcache.h version.h progress.h pkgrecords.h \
 	  acquire.h acquire-worker.h acquire-item.h acquire-method.h \
 	  clean.h srcrecords.h cachefile.h versionmatch.h policy.h \
 	  pkgsystem.h indexfile.h metaindex.h indexrecords.h vendor.h \
-          vendorlist.h cdrom.h indexcopy.h aptconfiguration.h
+	  vendorlist.h cdrom.h indexcopy.h aptconfiguration.h \
+	  cachefilter.h cacheset.h
 
 # Source code for the debian specific components
 # In theory the deb headers do not need to be exported..
diff --git a/apt-pkg/metaindex.h b/apt-pkg/metaindex.h
index 779b6ab14..1d2140799 100644
--- a/apt-pkg/metaindex.h
+++ b/apt-pkg/metaindex.h
@@ -33,8 +33,8 @@ class metaIndex
    virtual const char* GetType() const {return Type;}
 
    // Interface for acquire
-   virtual string ArchiveURI(string /*File*/) const = 0;
-   virtual bool GetIndexes(pkgAcquire *Owner, bool GetAll=false) const = 0;
+   virtual string ArchiveURI(string const& /*File*/) const = 0;
+   virtual bool GetIndexes(pkgAcquire *Owner, bool const &GetAll=false) const = 0;
    
    virtual vector<pkgIndexFile *> *GetIndexFiles() = 0; 
    virtual bool IsTrusted() const = 0;
diff --git a/apt-pkg/orderlist.cc b/apt-pkg/orderlist.cc
index 0ee2e2bc8..55f9cb9cc 100644
--- a/apt-pkg/orderlist.cc
+++ b/apt-pkg/orderlist.cc
@@ -117,7 +117,8 @@ bool pkgOrderList::IsMissing(PkgIterator Pkg)
       return false;
 
    // Skip Packages that need configure only.
-   if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && 
+   if ((Pkg.State() == pkgCache::PkgIterator::NeedsConfigure ||
+        Pkg.State() == pkgCache::PkgIterator::NeedsNothing) &&
        Cache[Pkg].Keep() == true)
       return false;
 
@@ -126,6 +127,11 @@ bool pkgOrderList::IsMissing(PkgIterator Pkg)
    
    if (FileList[Pkg->ID].empty() == false)
       return false;
+
+   // Missing Pseudo packages are missing if the real package is missing
+   if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == true)
+      return IsMissing(Pkg.Group().FindPkg("all"));
+
    return true;
 }
 									/*}}}*/
@@ -199,7 +205,7 @@ bool pkgOrderList::OrderCritical()
       {
 	 PkgIterator P(Cache,*I);
 	 if (IsNow(P) == true)
-	    clog << "  " << P.Name() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl;
+	    clog << "  " << P.FullName() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl;
       }
    }
 
@@ -272,7 +278,7 @@ bool pkgOrderList::OrderUnpack(string *FileList)
       {
 	 PkgIterator P(Cache,*I);
 	 if (IsNow(P) == true)
-	    clog << "  " << P.Name() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl;
+	    clog << "  " << P.FullName() << ' ' << IsMissing(P) << ',' << IsFlag(P,After) << endl;
       }
    }
 
@@ -543,7 +549,7 @@ bool pkgOrderList::VisitNode(PkgIterator Pkg)
    if (Debug == true)
    {
       for (int j = 0; j != Depth; j++) clog << ' ';
-      clog << "Visit " << Pkg.Name() << endl;
+      clog << "Visit " << Pkg.FullName() << endl;
    }
    
    Depth++;
@@ -602,7 +608,7 @@ bool pkgOrderList::VisitNode(PkgIterator Pkg)
    if (Debug == true)
    {
       for (int j = 0; j != Depth; j++) clog << ' ';
-      clog << "Leave " << Pkg.Name() << ' ' << IsFlag(Pkg,Added) << ',' << IsFlag(Pkg,AddPending) << endl;
+      clog << "Leave " << Pkg.FullName() << ' ' << IsFlag(Pkg,Added) << ',' << IsFlag(Pkg,AddPending) << endl;
    }
    
    return true;
diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
index b747fa78a..49776aac7 100644
--- a/apt-pkg/packagemanager.cc
+++ b/apt-pkg/packagemanager.cc
@@ -80,7 +80,10 @@ bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
       // Skip already processed packages
       if (List->IsNow(Pkg) == false)
 	 continue;
-	 
+
+      if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == true)
+	 continue;
+
       new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
 			FileNames[Pkg->ID]);
    }
@@ -277,8 +280,10 @@ bool pkgPackageManager::ConfigureAll()
    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
    {
       PkgIterator Pkg(Cache,*I);
-      
-      if (ConfigurePkgs == true && Configure(Pkg) == false)
+
+      if (ConfigurePkgs == true &&
+	  pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
+	  Configure(Pkg) == false)
 	 return false;
       
       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
@@ -313,7 +318,9 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
    {
       PkgIterator Pkg(Cache,*I);
       
-      if (ConfigurePkgs == true && Configure(Pkg) == false)
+      if (ConfigurePkgs == true &&
+	  pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
+	  Configure(Pkg) == false)
 	 return false;
       
       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
@@ -465,7 +472,12 @@ bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
       return true;
 
    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
-   return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
+
+   if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
+      return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
+   else
+      return SmartRemove(Pkg.Group().FindPkg("all"));
+   return true;
 }
 									/*}}}*/
 // PM::SmartUnPack - Install helper					/*{{{*/
@@ -579,10 +591,23 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
    for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList(); 
 	P.end() == false; P++)
       CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
-   
-   if (Install(Pkg,FileNames[Pkg->ID]) == false)
-      return false;
-   
+
+   if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
+   {
+      if(Install(Pkg,FileNames[Pkg->ID]) == false)
+         return false;
+   } else {
+      // Pseudo packages will not be unpacked - instead we will do this
+      // for the "real" package, but only once and if it is already
+      // configured we don't need to unpack it again…
+      PkgIterator const P = Pkg.Group().FindPkg("all");
+      if (List->IsFlag(P,pkgOrderList::UnPacked) != true &&
+	  List->IsFlag(P,pkgOrderList::Configured) != true &&
+	  P.State() != pkgCache::PkgIterator::NeedsNothing) {
+	 if (SmartUnPack(P) == false)
+	    return false;
+      }
+   }
    List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
    
    // Perform immedate configuration of the package.
diff --git a/apt-pkg/packagemanager.h b/apt-pkg/packagemanager.h
index 44f5d5ef7..efd2cfac6 100644
--- a/apt-pkg/packagemanager.h
+++ b/apt-pkg/packagemanager.h
@@ -28,6 +28,7 @@
 #include <iostream>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/depcache.h>
+#include <set>
 
 using std::string;
 
@@ -47,13 +48,17 @@ class pkgPackageManager : protected pkgCache::Namespace
    pkgDepCache &Cache;
    pkgOrderList *List;
    bool Debug;
-         
+
+   /** \brief saves packages dpkg let disappear
+
+       This way APT can retreat from trying to configure these
+       packages later on and a frontend can choose to display a
+       notice to inform the user about these disappears.
+   */
+   std::set<std::string> disappearedPkgs;
+
    bool DepAdd(pkgOrderList &Order,PkgIterator P,int Depth = 0);
-   // binary-compat change, fix on next abi break
-   void ImmediateAdd(PkgIterator P, bool UseInstallVer) {
-      ImmediateAdd(P, UseInstallVer, 0);
-   }
-   void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth);
+   void ImmediateAdd(PkgIterator P, bool UseInstallVer, unsigned const int &Depth = 0);
    virtual OrderResult OrderInstall();
    bool CheckRConflicts(PkgIterator Pkg,DepIterator Dep,const char *Ver);
    bool CreateOrderList();
@@ -97,7 +102,10 @@ class pkgPackageManager : protected pkgCache::Namespace
    // stuff that needs to be done after the fork
    OrderResult DoInstallPostFork(int statusFd=-1);
    bool FixMissing();
-   
+
+   /** \brief returns all packages dpkg let disappear */
+   inline std::set<std::string> GetDisappearedPackages() { return disappearedPkgs; };
+
    pkgPackageManager(pkgDepCache *Cache);
    virtual ~pkgPackageManager();
 };
diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 4a0f3ee58..9e1f8b633 100644
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -22,11 +22,12 @@
 // Include Files							/*{{{*/
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/policy.h>
-#include <apt-pkg/indexfile.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/macros.h>
 
 #include <apti18n.h>
     
@@ -54,6 +55,7 @@ pkgCache::Header::Header()
    Dirty = false;
    
    HeaderSz = sizeof(pkgCache::Header);
+   GroupSz = sizeof(pkgCache::Group);
    PackageSz = sizeof(pkgCache::Package);
    PackageFileSz = sizeof(pkgCache::PackageFile);
    VersionSz = sizeof(pkgCache::Version);
@@ -63,6 +65,7 @@ pkgCache::Header::Header()
    VerFileSz = sizeof(pkgCache::VerFile);
    DescFileSz = sizeof(pkgCache::DescFile);
    
+   GroupCount = 0;
    PackageCount = 0;
    VersionCount = 0;
    DescriptionCount = 0;
@@ -78,7 +81,8 @@ pkgCache::Header::Header()
    StringList = 0;
    VerSysName = 0;
    Architecture = 0;
-   memset(HashTable,0,sizeof(HashTable));
+   memset(PkgHashTable,0,sizeof(PkgHashTable));
+   memset(GrpHashTable,0,sizeof(GrpHashTable));
    memset(Pools,0,sizeof(Pools));
 }
 									/*}}}*/
@@ -88,6 +92,7 @@ pkgCache::Header::Header()
 bool pkgCache::Header::CheckSizes(Header &Against) const
 {
    if (HeaderSz == Against.HeaderSz &&
+       GroupSz == Against.GroupSz &&
        PackageSz == Against.PackageSz &&
        PackageFileSz == Against.PackageFileSz &&
        VersionSz == Against.VersionSz &&
@@ -106,6 +111,7 @@ bool pkgCache::Header::CheckSizes(Header &Against) const
 /* */
 pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map)
 {
+   MultiArchEnabled = APT::Configuration::getArchitectures().size() > 1;
    if (DoMap == true)
       ReMap();
 }
@@ -113,10 +119,11 @@ pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map)
 // Cache::ReMap - Reopen the cache file					/*{{{*/
 // ---------------------------------------------------------------------
 /* If the file is already closed then this will open it open it. */
-bool pkgCache::ReMap()
+bool pkgCache::ReMap(bool const &Errorchecks)
 {
    // Apply the typecasts.
    HeaderP = (Header *)Map.Data();
+   GrpP = (Group *)Map.Data();
    PkgP = (Package *)Map.Data();
    VerFileP = (VerFile *)Map.Data();
    DescFileP = (DescFile *)Map.Data();
@@ -128,6 +135,9 @@ bool pkgCache::ReMap()
    StringItemP = (StringItem *)Map.Data();
    StrP = (char *)Map.Data();
 
+   if (Errorchecks == false)
+      return true;
+
    if (Map.Size() == 0 || HeaderP == 0)
       return _error->Error(_("Empty package cache"));
    
@@ -164,7 +174,7 @@ unsigned long pkgCache::sHash(const string &Str) const
    unsigned long Hash = 0;
    for (string::const_iterator I = Str.begin(); I != Str.end(); I++)
       Hash = 5*Hash + tolower_ascii(*I);
-   return Hash % _count(HeaderP->HashTable);
+   return Hash % _count(HeaderP->PkgHashTable);
 }
 
 unsigned long pkgCache::sHash(const char *Str) const
@@ -172,26 +182,82 @@ unsigned long pkgCache::sHash(const char *Str) const
    unsigned long Hash = 0;
    for (const char *I = Str; *I != 0; I++)
       Hash = 5*Hash + tolower_ascii(*I);
-   return Hash % _count(HeaderP->HashTable);
+   return Hash % _count(HeaderP->PkgHashTable);
 }
 
 									/*}}}*/
-// Cache::FindPkg - Locate a package by name				/*{{{*/
+// Cache::SingleArchFindPkg - Locate a package by name			/*{{{*/
 // ---------------------------------------------------------------------
-/* Returns 0 on error, pointer to the package otherwise */
-pkgCache::PkgIterator pkgCache::FindPkg(const string &Name)
+/* Returns 0 on error, pointer to the package otherwise
+   The multiArch enabled methods will fallback to this one as it is (a bit)
+   faster for single arch environments and realworld is mostly singlearch… */
+pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name)
 {
    // Look at the hash bucket
-   Package *Pkg = PkgP + HeaderP->HashTable[Hash(Name)];
+   Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)];
    for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage)
    {
       if (Pkg->Name != 0 && StrP[Pkg->Name] == Name[0] &&
-	  stringcasecmp(Name,StrP + Pkg->Name) == 0)
-	 return PkgIterator(*this,Pkg);
+          stringcasecmp(Name,StrP + Pkg->Name) == 0)
+         return PkgIterator(*this,Pkg);
    }
    return PkgIterator(*this,0);
 }
 									/*}}}*/
+// Cache::FindPkg - Locate a package by name				/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns 0 on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) {
+	if (MultiArchCache() == false)
+		return SingleArchFindPkg(Name);
+	size_t const found = Name.find(':');
+	if (found == string::npos)
+		return FindPkg(Name, "native");
+	string const Arch = Name.substr(found+1);
+	if (Arch == "any")
+		return FindPkg(Name, "any");
+	return FindPkg(Name.substr(0, found), Arch);
+}
+									/*}}}*/
+// Cache::FindPkg - Locate a package by name				/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns 0 on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::FindPkg(const string &Name, string const &Arch) {
+	if (MultiArchCache() == false) {
+		if (Arch == "native" || Arch == "all" || Arch == "any" ||
+		    Arch == _config->Find("APT::Architecture"))
+			return SingleArchFindPkg(Name);
+		else
+			return PkgIterator(*this,0);
+	}
+	/* We make a detour via the GrpIterator here as
+	   on a multi-arch environment a group is easier to
+	   find than a package (less entries in the buckets) */
+	pkgCache::GrpIterator Grp = FindGrp(Name);
+	if (Grp.end() == true)
+		return PkgIterator(*this,0);
+
+	return Grp.FindPkg(Arch);
+}
+									/*}}}*/
+// Cache::FindGrp - Locate a group by name				/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns End-Pointer on error, pointer to the group otherwise */
+pkgCache::GrpIterator pkgCache::FindGrp(const string &Name) {
+	if (unlikely(Name.empty() == true))
+		return GrpIterator(*this,0);
+
+	// Look at the hash bucket for the group
+	Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)];
+	for (; Grp != GrpP; Grp = GrpP + Grp->Next) {
+		if (Grp->Name != 0 && StrP[Grp->Name] == Name[0] &&
+		    stringcasecmp(Name, StrP + Grp->Name) == 0)
+			return GrpIterator(*this, Grp);
+	}
+
+	return GrpIterator(*this,0);
+}
+									/*}}}*/
 // Cache::CompTypeDeb - Return a string describing the compare type	/*{{{*/
 // ---------------------------------------------------------------------
 /* This returns a string representation of the dependency compare 
@@ -241,11 +307,98 @@ const char *pkgCache::Priority(unsigned char Prio)
    return 0;
 }
 									/*}}}*/
-// Bases for iterator classes						/*{{{*/
-void pkgCache::VerIterator::_dummy() {}
-void pkgCache::DepIterator::_dummy() {}
-void pkgCache::PrvIterator::_dummy() {}
-void pkgCache::DescIterator::_dummy() {}
+// GrpIterator::FindPkg - Locate a package by arch			/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns an End-Pointer on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::GrpIterator::FindPkg(string Arch) const {
+	if (unlikely(IsGood() == false || S->FirstPackage == 0))
+		return PkgIterator(*Owner, 0);
+
+	static string const myArch = _config->Find("APT::Architecture");
+	/* Most of the time the package for our native architecture is
+	   the one we add at first to the cache, but this would be the
+	   last one we check, so we do it now. */
+	if (Arch == "native" || Arch == myArch) {
+		Arch = myArch;
+		pkgCache::Package *Pkg = Owner->PkgP + S->LastPackage;
+		if (stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
+			return PkgIterator(*Owner, Pkg);
+	}
+
+	/* If we accept any package we simply return the "first"
+	   package in this group (the last one added). */
+	if (Arch == "any")
+		return PkgIterator(*Owner, Owner->PkgP + S->FirstPackage);
+
+	/* Iterate over the list to find the matching arch
+	   unfortunately this list includes "package noise"
+	   (= different packages with same calculated hash),
+	   so we need to check the name also */
+	for (pkgCache::Package *Pkg = PackageList(); Pkg != Owner->PkgP;
+	     Pkg = Owner->PkgP + Pkg->NextPackage) {
+		if (S->Name == Pkg->Name &&
+		    stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0)
+			return PkgIterator(*Owner, Pkg);
+		if ((Owner->PkgP + S->LastPackage) == Pkg)
+			break;
+	}
+
+	return PkgIterator(*Owner, 0);
+}
+									/*}}}*/
+// GrpIterator::FindPreferredPkg - Locate the "best" package		/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns an End-Pointer on error, pointer to the package otherwise */
+pkgCache::PkgIterator pkgCache::GrpIterator::FindPreferredPkg(bool const &PreferNonVirtual) const {
+	pkgCache::PkgIterator Pkg = FindPkg("native");
+	if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
+		return Pkg;
+
+	std::vector<std::string> const archs = APT::Configuration::getArchitectures();
+	for (std::vector<std::string>::const_iterator a = archs.begin();
+	     a != archs.end(); ++a) {
+		Pkg = FindPkg(*a);
+		if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
+			return Pkg;
+	}
+
+	if (PreferNonVirtual == true)
+		return FindPreferredPkg(false);
+	return PkgIterator(*Owner, 0);
+}
+									/*}}}*/
+// GrpIterator::NextPkg - Locate the next package in the group		/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns an End-Pointer on error, pointer to the package otherwise.
+   We can't simply ++ to the next as the next package of the last will
+   be from a different group (with the same hash value) */
+pkgCache::PkgIterator pkgCache::GrpIterator::NextPkg(pkgCache::PkgIterator const &LastPkg) const {
+	if (unlikely(IsGood() == false || S->FirstPackage == 0 ||
+	    LastPkg.end() == true))
+		return PkgIterator(*Owner, 0);
+
+	if (S->LastPackage == LastPkg.Index())
+		return PkgIterator(*Owner, 0);
+
+	return PkgIterator(*Owner, Owner->PkgP + LastPkg->NextPackage);
+}
+									/*}}}*/
+// GrpIterator::operator ++ - Postfix incr				/*{{{*/
+// ---------------------------------------------------------------------
+/* This will advance to the next logical group in the hash table. */
+void pkgCache::GrpIterator::operator ++(int) 
+{
+   // Follow the current links
+   if (S != Owner->GrpP)
+      S = Owner->GrpP + S->Next;
+
+   // Follow the hash table
+   while (S == Owner->GrpP && (HashIndex+1) < (signed)_count(Owner->HeaderP->GrpHashTable))
+   {
+      HashIndex++;
+      S = Owner->GrpP + Owner->HeaderP->GrpHashTable[HashIndex];
+   }
+};
 									/*}}}*/
 // PkgIterator::operator ++ - Postfix incr				/*{{{*/
 // ---------------------------------------------------------------------
@@ -253,14 +406,14 @@ void pkgCache::DescIterator::_dummy() {}
 void pkgCache::PkgIterator::operator ++(int) 
 {
    // Follow the current links
-   if (Pkg != Owner->PkgP)
-      Pkg = Owner->PkgP + Pkg->NextPackage;
+   if (S != Owner->PkgP)
+      S = Owner->PkgP + S->NextPackage;
 
    // Follow the hash table
-   while (Pkg == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->HashTable))
+   while (S == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->PkgHashTable))
    {
       HashIndex++;
-      Pkg = Owner->PkgP + Owner->HeaderP->HashTable[HashIndex];
+      S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex];
    }
 };
 									/*}}}*/
@@ -269,12 +422,12 @@ void pkgCache::PkgIterator::operator ++(int)
 /* By this we mean if it is either cleanly installed or cleanly removed. */
 pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const
 {  
-   if (Pkg->InstState == pkgCache::State::ReInstReq ||
-       Pkg->InstState == pkgCache::State::HoldReInstReq)
+   if (S->InstState == pkgCache::State::ReInstReq ||
+       S->InstState == pkgCache::State::HoldReInstReq)
       return NeedsUnpack;
    
-   if (Pkg->CurrentState == pkgCache::State::UnPacked ||
-       Pkg->CurrentState == pkgCache::State::HalfConfigured)
+   if (S->CurrentState == pkgCache::State::UnPacked ||
+       S->CurrentState == pkgCache::State::HalfConfigured)
       // we leave triggers alone complettely. dpkg deals with
       // them in a hard-to-predict manner and if they get 
       // resolved by dpkg before apt run dpkg --configure on 
@@ -283,8 +436,8 @@ pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const
       //Pkg->CurrentState == pkgCache::State::TriggersPending)
       return NeedsConfigure;
    
-   if (Pkg->CurrentState == pkgCache::State::HalfInstalled ||
-       Pkg->InstState != pkgCache::State::Ok)
+   if (S->CurrentState == pkgCache::State::HalfInstalled ||
+       S->InstState != pkgCache::State::Ok)
       return NeedsUnpack;
       
    return NeedsNothing;
@@ -331,7 +484,7 @@ operator<<(ostream& out, pkgCache::PkgIterator Pkg)
    string candidate = string(Pkg.CandVersion() == 0 ? "none" : Pkg.CandVersion());
    string newest = string(Pkg.VersionList().end() ? "none" : Pkg.VersionList().VerStr());
 
-   out << Pkg.Name() << " < " << current;
+   out << Pkg.Name() << " [ " << Pkg.Arch() << " ] < " << current;
    if (current != candidate)
       out << " -> " << candidate;
    if ( newest != "none" && candidate != newest)
@@ -340,17 +493,29 @@ operator<<(ostream& out, pkgCache::PkgIterator Pkg)
    return out;
 }
 									/*}}}*/
+// PkgIterator::FullName - Returns Name and (maybe) Architecture	/*{{{*/
+// ---------------------------------------------------------------------
+/* Returns a name:arch string */
+std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const
+{
+   string fullname = Name();
+   if (Pretty == false ||
+       (strcmp(Arch(), "all") != 0 && _config->Find("APT::Architecture") != Arch()))
+      return fullname.append(":").append(Arch());
+   return fullname;
+}
+									/*}}}*/
 // DepIterator::IsCritical - Returns true if the dep is important	/*{{{*/
 // ---------------------------------------------------------------------
 /* Currently critical deps are defined as depends, predepends and
    conflicts (including dpkg's Breaks fields). */
-bool pkgCache::DepIterator::IsCritical()
+bool pkgCache::DepIterator::IsCritical() const
 {
-   if (Dep->Type == pkgCache::Dep::Conflicts ||
-       Dep->Type == pkgCache::Dep::DpkgBreaks ||
-       Dep->Type == pkgCache::Dep::Obsoletes ||
-       Dep->Type == pkgCache::Dep::Depends ||
-       Dep->Type == pkgCache::Dep::PreDepends)
+   if (S->Type == pkgCache::Dep::Conflicts ||
+       S->Type == pkgCache::Dep::DpkgBreaks ||
+       S->Type == pkgCache::Dep::Obsoletes ||
+       S->Type == pkgCache::Dep::Depends ||
+       S->Type == pkgCache::Dep::PreDepends)
       return true;
    return false;
 }
@@ -368,7 +533,7 @@ bool pkgCache::DepIterator::IsCritical()
    In Conjunction with the DepCache the value of Result may not be 
    super-good since the policy may have made it uninstallable. Using
    AllTargets is better in this case. */
-bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result)
+bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const
 {
    Result = TargetPkg();
    
@@ -417,7 +582,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result)
    provides. It includes every possible package-version that could satisfy
    the dependency. The last item in the list has a 0. The resulting pointer
    must be delete [] 'd */
-pkgCache::Version **pkgCache::DepIterator::AllTargets()
+pkgCache::Version **pkgCache::DepIterator::AllTargets() const
 {
    Version **Res = 0;
    unsigned long Size =0;
@@ -429,12 +594,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets()
       // Walk along the actual package providing versions
       for (VerIterator I = DPkg.VersionList(); I.end() == false; I++)
       {
-	 if (Owner->VS->CheckDep(I.VerStr(),Dep->CompareOp,TargetVer()) == false)
+	 if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
 	    continue;
 
-	 if ((Dep->Type == pkgCache::Dep::Conflicts ||
-	      Dep->Type == pkgCache::Dep::DpkgBreaks ||
-	      Dep->Type == pkgCache::Dep::Obsoletes) &&
+	 if ((S->Type == pkgCache::Dep::Conflicts ||
+	      S->Type == pkgCache::Dep::DpkgBreaks ||
+	      S->Type == pkgCache::Dep::Obsoletes) &&
 	     ParentPkg() == I.ParentPkg())
 	    continue;
 	 
@@ -446,12 +611,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets()
       // Follow all provides
       for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; I++)
       {
-	 if (Owner->VS->CheckDep(I.ProvideVersion(),Dep->CompareOp,TargetVer()) == false)
+	 if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
 	    continue;
 	 
-	 if ((Dep->Type == pkgCache::Dep::Conflicts ||
-	      Dep->Type == pkgCache::Dep::DpkgBreaks ||
-	      Dep->Type == pkgCache::Dep::Obsoletes) &&
+	 if ((S->Type == pkgCache::Dep::Conflicts ||
+	      S->Type == pkgCache::Dep::DpkgBreaks ||
+	      S->Type == pkgCache::Dep::Obsoletes) &&
 	     ParentPkg() == I.OwnerPkg())
 	    continue;
 	 
@@ -489,7 +654,7 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End)
    End = *this;
    for (bool LastOR = true; end() == false && LastOR == true;)
    {
-      LastOR = (Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
+      LastOR = (S->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
       (*this)++;
       if (LastOR == true)
 	 End = (*this);
@@ -544,6 +709,23 @@ bool pkgCache::VerIterator::Automatic() const
    return false;
 }
 									/*}}}*/
+// VerIterator::Pseudo - Check if this version is a pseudo one		/*{{{*/
+// ---------------------------------------------------------------------
+/* Sometimes you have the need to express dependencies with versions
+   which doesn't really exist or exist multiply times for "different"
+   packages. We need these versions for dependency resolution but they
+   are a problem everytime we need to download/install something. */
+bool pkgCache::VerIterator::Pseudo() const
+{
+   if (S->MultiArch == pkgCache::Version::All &&
+	   strcmp(Arch(true),"all") != 0)
+   {
+	   GrpIterator const Grp = ParentPkg().Group();
+	   return (Grp->LastPackage != Grp->FirstPackage);
+   }
+   return false;
+}
+									/*}}}*/
 // VerIterator::NewestFile - Return the newest file version relation	/*{{{*/
 // ---------------------------------------------------------------------
 /* This looks at the version numbers associated with all of the sources
@@ -565,7 +747,7 @@ pkgCache::VerFileIterator pkgCache::VerIterator::NewestFile() const
 // ---------------------------------------------------------------------
 /* This describes the version from a release-centric manner. The output is a 
    list of Label:Version/Archive */
-string pkgCache::VerIterator::RelStr()
+string pkgCache::VerIterator::RelStr() const
 {
    bool First = true;
    string Res;
@@ -624,7 +806,9 @@ string pkgCache::VerIterator::RelStr()
 	 else
 	    Res += File.Site();
       }      
-   }   
+   }
+   if (S->ParentPkg != 0)
+      Res.append(" [").append(Arch()).append("]");
    return Res;
 }
 									/*}}}*/
@@ -639,7 +823,7 @@ bool pkgCache::PkgFileIterator::IsOk()
    if (stat(FileName(),&Buf) != 0)
       return false;
 
-   if (Buf.st_size != (signed)File->Size || Buf.st_mtime != File->mtime)
+   if (Buf.st_size != (signed)S->Size || Buf.st_mtime != S->mtime)
       return false;
 
    return true;
@@ -663,6 +847,8 @@ string pkgCache::PkgFileIterator::RelStr()
       Res = Res + (Res.empty() == true?"l=":",l=")  + Label();
    if (Component() != 0)
       Res = Res + (Res.empty() == true?"c=":",c=")  + Component();
+   if (Architecture() != 0)
+      Res = Res + (Res.empty() == true?"b=":",b=")  + Architecture();
    return Res;
 }
 									/*}}}*/
@@ -673,14 +859,22 @@ string pkgCache::PkgFileIterator::RelStr()
  */
 pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
 {
-   pkgCache::DescIterator DescDefault = DescriptionList();
-   pkgCache::DescIterator Desc = DescDefault;
-   for (; Desc.end() == false; Desc++)
-      if (pkgIndexFile::LanguageCode() == Desc.LanguageCode())
-	 break;
-   if (Desc.end() == true) 
-      Desc = DescDefault;
-   return Desc;
+   std::vector<string> const lang = APT::Configuration::getLanguages();
+   for (std::vector<string>::const_iterator l = lang.begin();
+	l != lang.end(); l++)
+   {
+      pkgCache::DescIterator DescDefault = DescriptionList();
+      pkgCache::DescIterator Desc = DescDefault;
+
+      for (; Desc.end() == false; Desc++)
+	 if (*l == Desc.LanguageCode())
+	    break;
+      if (Desc.end() == true) 
+	 Desc = DescDefault;
+      return Desc;
+   }
+
+   return DescriptionList();
 };
 
 									/*}}}*/
diff --git a/apt-pkg/pkgcache.h b/apt-pkg/pkgcache.h
index 38733713f..799521784 100644
--- a/apt-pkg/pkgcache.h
+++ b/apt-pkg/pkgcache.h
@@ -1,20 +1,75 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: pkgcache.h,v 1.25 2001/07/01 22:28:24 jgg Exp $
-/* ######################################################################
-   
-   Cache - Structure definitions for the cache file
-   
-   Please see doc/apt-pkg/cache.sgml for a more detailed description of 
-   this format. Also be sure to keep that file up-to-date!!
-   
+/**\file pkgcache.h
+   \brief pkgCache - Structure definitions for the cache file
+
+   The goal of the cache file is two fold:
+   Firstly to speed loading and processing of the package file array and
+   secondly to reduce memory consumption of the package file array.
+
+   The implementation is aimed at an environment with many primary package
+   files, for instance someone that has a Package file for their CD-ROM, a
+   Package file for the latest version of the distribution on the CD-ROM and a
+   package file for the development version. Always present is the information
+   contained in the status file which might be considered a separate package
+   file.
+
+   Please understand, this is designed as a <b>Cache file</b> it is not meant to be
+   used on any system other than the one it was created for. It is not meant to
+   be authoritative either, i.e. if a system crash or software failure occurs it
+   must be perfectly acceptable for the cache file to be in an inconsistent
+   state. Furthermore at any time the cache file may be erased without losing
+   any information.
+
+   Also the structures and storage layout is optimized for use by the APT
+   and may not be suitable for all purposes. However it should be possible
+   to extend it with associate cache files that contain other information.
+
+   To keep memory use down the cache file only contains often used fields and
+   fields that are inexpensive to store, the Package file has a full list of
+   fields. Also the client may assume that all items are perfectly valid and
+   need not perform checks against their correctness. Removal of information
+   from the cache is possible, but blanks will be left in the file, and
+   unused strings will also be present. The recommended implementation is to
+   simply rebuild the cache each time any of the data files change. It is
+   possible to add a new package file to the cache without any negative side
+   effects.
+
+   <b>Note on Pointer access</b>
    Clients should always use the CacheIterators classes for access to the
-   cache. They provide a simple STL-like method for traversing the links
-   of the datastructure.
-   
-   See pkgcachegen.h for information about generating cache structures.
-   
-   ##################################################################### */
+   cache and the data in it. They also provide a simple STL-like method for
+   traversing the links of the datastructure.
+
+   Every item in every structure is stored as the index to that structure.
+   What this means is that once the files is mmaped every data access has to
+   go through a fix up stage to get a real memory pointer. This is done
+   by taking the index, multiplying it by the type size and then adding
+   it to the start address of the memory block. This sounds complex, but
+   in C it is a single array dereference. Because all items are aligned to
+   their size and indexes are stored as multiples of the size of the structure
+   the format is immediately portable to all possible architectures - BUT the
+   generated files are -NOT-.
+
+   This scheme allows code like this to be written:
+   <example>
+     void *Map = mmap(...);
+     Package *PkgList = (Package *)Map;
+     Header *Head = (Header *)Map;
+     char *Strings = (char *)Map;
+     cout << (Strings + PkgList[Head->HashTable[0]]->Name) << endl;
+   </example>
+   Notice the lack of casting or multiplication. The net result is to return
+   the name of the first package in the first hash bucket, without error
+   checks.
+
+   The generator uses allocation pools to group similarly sized structures in
+   large blocks to eliminate any alignment overhead. The generator also
+   assures that no structures overlap and all indexes are unique. Although
+   at first glance it may seem like there is the potential for two structures
+   to exist at the same point the generator never allows this to happen.
+   (See the discussion of free space pools)
+
+   See \ref pkgcachegen.h for more information about generating cache structures. */
 									/*}}}*/
 #ifndef PKGLIB_PKGCACHE_H
 #define PKGLIB_PKGCACHE_H
@@ -32,6 +87,7 @@ class pkgCache								/*{{{*/
    public:
    // Cache element predeclarations
    struct Header;
+   struct Group;
    struct Package;
    struct PackageFile;
    struct Version;
@@ -43,6 +99,8 @@ class pkgCache								/*{{{*/
    struct DescFile;
    
    // Iterators
+   template<typename Str, typename Itr> class Iterator;
+   class GrpIterator;
    class PkgIterator;
    class VerIterator;
    class DescIterator;
@@ -51,14 +109,6 @@ class pkgCache								/*{{{*/
    class PkgFileIterator;
    class VerFileIterator;
    class DescFileIterator;
-   friend class PkgIterator;
-   friend class VerIterator;
-   friend class DescInterator;
-   friend class DepIterator;
-   friend class PrvIterator;
-   friend class PkgFileIterator;
-   friend class VerFileIterator;
-   friend class DescFileIterator;
    
    class Namespace;
    
@@ -71,12 +121,20 @@ class pkgCache								/*{{{*/
    {
       enum DepType {Depends=1,PreDepends=2,Suggests=3,Recommends=4,
 	 Conflicts=5,Replaces=6,Obsoletes=7,DpkgBreaks=8,Enhances=9};
+      /** \brief available compare operators
+
+          The lower 4 bits are used to indicate what operator is being specified and
+          the upper 4 bits are flags. OR indicates that the next package is
+          or'd with the current package. */
       enum DepCompareOp {Or=0x10,NoOp=0,LessEq=0x1,GreaterEq=0x2,Less=0x3,
 	 Greater=0x4,Equals=0x5,NotEquals=0x6};
    };
    
    struct State
    {
+      /** \brief priority of a package version
+
+          Zero is used for unparsable or absent Priority fields. */
       enum VerPriority {Important=1,Required=2,Standard=3,Optional=4,Extra=5};
       enum PkgSelectedState {Unknown=0,Install=1,Hold=2,DeInstall=3,Purge=4};
       enum PkgInstState {Ok=0,ReInstReq=1,HoldInst=2,HoldReInstReq=3};
@@ -104,6 +162,7 @@ class pkgCache								/*{{{*/
    
    // Pointers to the arrays of items
    Header *HeaderP;
+   Group *GrpP;
    Package *PkgP;
    VerFile *VerFileP;
    DescFile *DescFileP;
@@ -115,7 +174,7 @@ class pkgCache								/*{{{*/
    StringItem *StringItemP;
    char *StrP;
 
-   virtual bool ReMap();
+   virtual bool ReMap(bool const &Errorchecks = true);
    inline bool Sync() {return Map.Sync();};
    inline MMap &GetMap() {return Map;};
    inline void *DataEnd() {return ((unsigned char *)Map.Data()) + Map.Size();};
@@ -124,17 +183,24 @@ class pkgCache								/*{{{*/
    inline unsigned long Hash(const string &S) const {return sHash(S);};
    inline unsigned long Hash(const char *S) const {return sHash(S);};
 
-   // Usefull transformation things
+   // Useful transformation things
    const char *Priority(unsigned char Priority);
    
    // Accessors
+   GrpIterator FindGrp(const string &Name);
    PkgIterator FindPkg(const string &Name);
+   PkgIterator FindPkg(const string &Name, const string &Arch);
+
    Header &Head() {return *HeaderP;};
+   inline GrpIterator GrpBegin();
+   inline GrpIterator GrpEnd();
    inline PkgIterator PkgBegin();
    inline PkgIterator PkgEnd();
    inline PkgFileIterator FileBegin();
    inline PkgFileIterator FileEnd();
 
+   inline bool MultiArchCache() const { return MultiArchEnabled; };
+
    // Make me a function
    pkgVersioningSystem *VS;
    
@@ -145,19 +211,40 @@ class pkgCache								/*{{{*/
    
    pkgCache(MMap *Map,bool DoMap = true);
    virtual ~pkgCache() {};
+
+private:
+   bool MultiArchEnabled;
+   PkgIterator SingleArchFindPkg(const string &Name);
 };
 									/*}}}*/
 // Header structure							/*{{{*/
 struct pkgCache::Header
 {
-   // Signature information
+   /** \brief Signature information
+
+       This must contain the hex value 0x98FE76DC which is designed to
+       verify that the system loading the image has the same byte order
+       and byte size as the system saving the image */
    unsigned long Signature;
+   /** These contain the version of the cache file */
    short MajorVersion;
    short MinorVersion;
+   /** \brief indicates if the cache should be erased
+
+       Dirty is true if the cache file was opened for reading, the client
+       expects to have written things to it and have not fully synced it.
+       The file should be erased and rebuilt if it is true. */
    bool Dirty;
-   
-   // Size of structure values
+
+   /** \brief Size of structure values
+
+       All *Sz variables contains the sizeof() that particular structure.
+       It is used as an extra consistency check on the structure of the file.
+
+       If any of the size values do not exactly match what the client expects
+       then the client should refuse the load the file. */
    unsigned short HeaderSz;
+   unsigned short GroupSz;
    unsigned short PackageSz;
    unsigned short PackageFileSz;
    unsigned short VersionSz;
@@ -166,8 +253,13 @@ struct pkgCache::Header
    unsigned short ProvidesSz;
    unsigned short VerFileSz;
    unsigned short DescFileSz;
-   
-   // Structure counts
+
+   /** \brief Structure counts
+
+       These indicate the number of each structure contained in the cache.
+       PackageCount is especially useful for generating user state structures.
+       See Package::Id for more info. */
+   unsigned long GroupCount;
    unsigned long PackageCount;
    unsigned long VersionCount;
    unsigned long DescriptionCount;
@@ -176,154 +268,393 @@ struct pkgCache::Header
    unsigned long VerFileCount;
    unsigned long DescFileCount;
    unsigned long ProvidesCount;
-   
-   // Offsets
-   map_ptrloc FileList;              // struct PackageFile
-   map_ptrloc StringList;            // struct StringItem
-   map_ptrloc VerSysName;            // StringTable
-   map_ptrloc Architecture;          // StringTable
+
+   /** \brief index of the first PackageFile structure
+
+       The PackageFile structures are singly linked lists that represent
+       all package files that have been merged into the cache. */
+   map_ptrloc FileList;
+   /** \brief index of the first StringItem structure
+
+       The cache contains a list of all the unique strings (StringItems).
+       The parser reads this list into memory so it can match strings
+       against it.*/
+   map_ptrloc StringList;
+   /** \brief String representing the version system used */
+   map_ptrloc VerSysName;
+   /** \brief Architecture(s) the cache was built against */
+   map_ptrloc Architecture;
+   /** \brief The maximum size of a raw entry from the original Package file */
    unsigned long MaxVerFileSize;
+   /** \brief The maximum size of a raw entry from the original Translation file */
    unsigned long MaxDescFileSize;
 
-   /* Allocation pools, there should be one of these for each structure
-      excluding the header */
-   DynamicMMap::Pool Pools[8];
+   /** \brief The Pool structures manage the allocation pools that the generator uses
+
+       Start indicates the first byte of the pool, Count is the number of objects
+       remaining in the pool and ItemSize is the structure size (alignment factor)
+       of the pool. An ItemSize of 0 indicates the pool is empty. There should be
+       the same number of pools as there are structure types. The generator
+       stores this information so future additions can make use of any unused pool
+       blocks. */
+   DynamicMMap::Pool Pools[9];
    
-   // Rapid package name lookup
-   map_ptrloc HashTable[2*1048];
+   /** \brief hash tables providing rapid group/package name lookup
+
+       Each group/package name is inserted into the hash table using pkgCache::Hash(const &string)
+       By iterating over each entry in the hash table it is possible to iterate over
+       the entire list of packages. Hash Collisions are handled with a singly linked
+       list of packages based at the hash item. The linked list contains only
+       packages that match the hashing function.
+       In the PkgHashTable is it possible that multiple packages have the same name -
+       these packages are stored as a sequence in the list.
+
+       Beware: The Hashmethod assumes that the hash table sizes are equal */
+   map_ptrloc PkgHashTable[2*1048];
+   map_ptrloc GrpHashTable[2*1048];
 
    bool CheckSizes(Header &Against) const;
    Header();
 };
 									/*}}}*/
-struct pkgCache::Package						/*{{{*/
+// Group structure							/*{{{*/
+/** \brief groups architecture depending packages together
+
+    On or more packages with the same name form a group, so we have
+    a simple way to access a package built for different architectures
+    Group exists in a singly linked list of group records starting at
+    the hash index of the name in the pkgCache::Header::GrpHashTable */
+struct pkgCache::Group
+{
+   /** \brief Name of the group */
+   map_ptrloc Name;		// StringItem
+
+   // Linked List
+   /** \brief Link to the first package which belongs to the group */
+   map_ptrloc FirstPackage;	// Package
+   /** \brief Link to the last package which belongs to the group */
+   map_ptrloc LastPackage;	// Package
+   /** \brief Link to the next Group */
+   map_ptrloc Next;		// Group
+   /** \brief unique sequel ID */
+   unsigned int ID;
+
+};
+									/*}}}*/
+// Package structure							/*{{{*/
+/** \brief contains information for a single unique package
+
+    There can be any number of versions of a given package.
+    Package exists in a singly linked list of package records starting at
+    the hash index of the name in the pkgCache::Header::PkgHashTable
+
+    A package can be created for every architecture so package names are
+    not unique, but it is garanteed that packages with the same name
+    are sequencel ordered in the list. Packages with the same name can be
+    accessed with the Group.
+*/
+struct pkgCache::Package
 {
-   // Pointers
-   map_ptrloc Name;              // Stringtable
+   /** \brief Name of the package */
+   map_ptrloc Name;              // StringItem
+   /** \brief Architecture of the package */
+   map_ptrloc Arch;              // StringItem
+   /** \brief Base of a singly linked list of versions
+
+       Each structure represents a unique version of the package.
+       The version structures contain links into PackageFile and the
+       original text file as well as detailed information about the size
+       and dependencies of the specific package. In this way multiple
+       versions of a package can be cleanly handled by the system.
+       Furthermore, this linked list is guaranteed to be sorted
+       from Highest version to lowest version with no duplicate entries. */
    map_ptrloc VersionList;       // Version
+   /** \brief index to the installed version */
    map_ptrloc CurrentVer;        // Version
-   map_ptrloc Section;           // StringTable (StringItem)
-      
-   // Linked list 
+   /** \brief indicates the deduced section
+
+       Should be the index to the string "Unknown" or to the section
+       of the last parsed item. */
+   map_ptrloc Section;           // StringItem
+   /** \brief index of the group this package belongs to */
+   map_ptrloc Group;             // Group the Package belongs to
+
+   // Linked list
+   /** \brief Link to the next package in the same bucket */
    map_ptrloc NextPackage;       // Package
+   /** \brief List of all dependencies on this package */
    map_ptrloc RevDepends;        // Dependency
+   /** \brief List of all "packages" this package provide */
    map_ptrloc ProvidesList;      // Provides
 
    // Install/Remove/Purge etc
+   /** \brief state that the user wishes the package to be in */
    unsigned char SelectedState;     // What
+   /** \brief installation state of the package
+
+       This should be "ok" but in case the installation failed
+       it will be different.
+   */
    unsigned char InstState;         // Flags
+   /** \brief indicates if the package is installed */
    unsigned char CurrentState;      // State
-   
+
+   /** \brief unique sequel ID
+
+       ID is a unique value from 0 to Header->PackageCount assigned by the generator.
+       This allows clients to create an array of size PackageCount and use it to store
+       state information for the package map. For instance the status file emitter uses
+       this to track which packages have been emitted already. */
    unsigned int ID;
+   /** \brief some useful indicators of the package's state */
    unsigned long Flags;
 };
 									/*}}}*/
-struct pkgCache::PackageFile						/*{{{*/
+// Package File structure						/*{{{*/
+/** \brief stores information about the files used to generate the cache
+
+    Package files are referenced by Version structures to be able to know
+    after the generation still from which Packages file includes this Version
+    as we need this information later on e.g. for pinning. */
+struct pkgCache::PackageFile
 {
-   // Names
-   map_ptrloc FileName;        // Stringtable
-   map_ptrloc Archive;         // Stringtable
-   map_ptrloc Codename;        // Stringtable
-   map_ptrloc Component;       // Stringtable
-   map_ptrloc Version;         // Stringtable
-   map_ptrloc Origin;          // Stringtable
-   map_ptrloc Label;           // Stringtable
-   map_ptrloc Architecture;    // Stringtable
-   map_ptrloc Site;            // Stringtable
-   map_ptrloc IndexType;       // Stringtable
-   unsigned long Size;            
+   /** \brief physical disk file that this PackageFile represents */
+   map_ptrloc FileName;        // StringItem
+   /** \brief the release information
+
+       Please see the files document for a description of what the
+       release information means. */
+   map_ptrloc Archive;         // StringItem
+   map_ptrloc Codename;        // StringItem
+   map_ptrloc Component;       // StringItem
+   map_ptrloc Version;         // StringItem
+   map_ptrloc Origin;          // StringItem
+   map_ptrloc Label;           // StringItem
+   map_ptrloc Architecture;    // StringItem
+   /** \brief The site the index file was fetched from */
+   map_ptrloc Site;            // StringItem
+   /** \brief indicates what sort of index file this is
+
+       @TODO enumerate at least the possible indexes */
+   map_ptrloc IndexType;       // StringItem
+   /** \brief Size of the file
+
+       Used together with the modification time as a
+       simple check to ensure that the Packages
+       file has not been altered since Cache generation. */
+   unsigned long Size;
+   /** \brief Modification time for the file */
+   time_t mtime;
+
+   /* @TODO document PackageFile::Flags */
    unsigned long Flags;
-   
+
    // Linked list
+   /** \brief Link to the next PackageFile in the Cache */
    map_ptrloc NextFile;        // PackageFile
+   /** \brief unique sequel ID */
    unsigned int ID;
-   time_t mtime;                  // Modification time for the file
 };
 									/*}}}*/
-struct pkgCache::VerFile						/*{{{*/
+// VerFile structure							/*{{{*/
+/** \brief associates a version with a PackageFile
+
+    This allows a full description of all Versions in all files
+    (and hence all sources) under consideration. */
+struct pkgCache::VerFile
 {
+   /** \brief index of the package file that this version was found in */
    map_ptrloc File;           // PackageFile
+   /** \brief next step in the linked list */
    map_ptrloc NextFile;       // PkgVerFile
+   /** \brief position in the package file */
    map_ptrloc Offset;         // File offset
-   unsigned short Size;
+   /* @TODO document pkgCache::VerFile::Size */
+   unsigned long Size;
 };
 									/*}}}*/
-struct pkgCache::DescFile						/*{{{*/
+// DescFile structure							/*{{{*/
+/** \brief associates a description with a Translation file */
+struct pkgCache::DescFile
 {
+   /** \brief index of the file that this description was found in */
    map_ptrloc File;           // PackageFile
+   /** \brief next step in the linked list */
    map_ptrloc NextFile;       // PkgVerFile
+   /** \brief position in the file */
    map_ptrloc Offset;         // File offset
-   unsigned short Size;
+   /* @TODO document pkgCache::DescFile::Size */
+   unsigned long Size;
 };
 									/*}}}*/
-struct pkgCache::Version						/*{{{*/
+// Version structure							/*{{{*/
+/** \brief information for a single version of a package
+
+    The version list is always sorted from highest version to lowest
+    version by the generator. Equal version numbers are either merged
+    or handled as separate versions based on the Hash value. */
+struct pkgCache::Version
 {
-   map_ptrloc VerStr;            // Stringtable
-   map_ptrloc Section;           // StringTable (StringItem)
-   map_ptrloc Arch;              // StringTable
-      
-   // Lists
+   /** \brief complete version string */
+   map_ptrloc VerStr;            // StringItem
+   /** \brief section this version is filled in */
+   map_ptrloc Section;           // StringItem
+   /** \brief stores the MultiArch capabilities of this version
+
+       None is the default and doesn't trigger special behaviour,
+       Foreign means that this version can fulfill dependencies even
+       if it is built for another architecture as the requester.
+       Same indicates that builds for different architectures can
+       be co-installed on the system and All is the marker for a
+       version with the Architecture: all. */
+   enum {None, All, Foreign, Same, Allowed} MultiArch;
+
+   /** \brief references all the PackageFile's that this version came from
+
+       FileList can be used to determine what distribution(s) the Version
+       applies to. If FileList is 0 then this is a blank version.
+       The structure should also have a 0 in all other fields excluding
+       pkgCache::Version::VerStr and Possibly pkgCache::Version::NextVer. */
    map_ptrloc FileList;          // VerFile
+   /** \brief next (lower or equal) version in the linked list */
    map_ptrloc NextVer;           // Version
+   /** \brief next description in the linked list */
    map_ptrloc DescriptionList;   // Description
+   /** \brief base of the dependency list */
    map_ptrloc DependsList;       // Dependency
+   /** \brief links to the owning package
+
+       This allows reverse dependencies to determine the package */
    map_ptrloc ParentPkg;         // Package
+   /** \brief list of pkgCache::Provides */
    map_ptrloc ProvidesList;      // Provides
-   
-   map_ptrloc Size;              // These are the .deb size
-   map_ptrloc InstalledSize;
+
+   /** \brief archive size for this version
+
+       For Debian this is the size of the .deb file. */
+   unsigned long long Size;      // These are the .deb size
+   /** \brief uncompressed size for this version */
+   unsigned long long InstalledSize;
+   /** \brief characteristic value representing this version
+
+       No two packages in existence should have the same VerStr
+       and Hash with different contents. */
    unsigned short Hash;
+   /** \brief unique sequel ID */
    unsigned int ID;
+   /** \brief parsed priority value */
    unsigned char Priority;
 };
 									/*}}}*/
-struct pkgCache::Description						/*{{{*/
+// Description structure						/*{{{*/
+/** \brief datamember of a linked list of available description for a version */
+struct pkgCache::Description
 {
-   // Language Code store the description translation language code. If
-   // the value has a 0 lenght then this is readed using the Package
-   // file else the Translation-CODE are used.
-   map_ptrloc language_code;     // StringTable
-   map_ptrloc md5sum;            // StringTable
+   /** \brief Language code of this description (translation)
+
+       If the value has a 0 length then this is read using the Package
+       file else the Translation-CODE file is used. */
+   map_ptrloc language_code;     // StringItem
+   /** \brief MD5sum of the original description
+
+       Used to map Translations of a description to a version
+       and to check that the Translation is up-to-date. */
+   map_ptrloc md5sum;            // StringItem
 
-   // Linked list 
+   /* @TODO document pkgCache::Description::FileList */
    map_ptrloc FileList;          // DescFile
+   /** \brief next translation for this description */
    map_ptrloc NextDesc;          // Description
+   /** \brief the text is a description of this package */
    map_ptrloc ParentPkg;         // Package
 
+   /** \brief unique sequel ID */
    unsigned int ID;
 };
 									/*}}}*/
-struct pkgCache::Dependency						/*{{{*/
+// Dependency structure							/*{{{*/
+/** \brief information for a single dependency record
+
+    The records are split up like this to ease processing by the client.
+    The base of the linked list is pkgCache::Version::DependsList.
+    All forms of dependencies are recorded here including Depends,
+    Recommends, Suggests, Enhances, Conflicts, Replaces and Breaks. */
+struct pkgCache::Dependency
 {
-   map_ptrloc Version;         // Stringtable
+   /** \brief string of the version the dependency is applied against */
+   map_ptrloc Version;         // StringItem
+   /** \brief index of the package this depends applies to
+
+       The generator will - if the package does not already exist -
+       create a blank (no version records) package. */
    map_ptrloc Package;         // Package
+   /** \brief next dependency of this version */
    map_ptrloc NextDepends;     // Dependency
+   /** \brief next reverse dependency of this package */
    map_ptrloc NextRevDepends;  // Dependency
+   /** \brief version of the package which has the reverse depends */
    map_ptrloc ParentVer;       // Version
-   
-   // Specific types of depends
-   map_ptrloc ID;   
+
+   /** \brief unique sequel ID */
+   map_ptrloc ID;
+   /** \brief Dependency type - Depends, Recommends, Conflicts, etc */
    unsigned char Type;
+   /** \brief comparison operator specified on the depends line
+
+       If the high bit is set then it is a logical OR with the previous record. */
    unsigned char CompareOp;
 };
 									/*}}}*/
-struct pkgCache::Provides						/*{{{*/
+// Provides structure							/*{{{*/
+/** \brief handles virtual packages
+
+    When a Provides: line is encountered a new provides record is added
+    associating the package with a virtual package name.
+    The provides structures are linked off the package structures.
+    This simplifies the analysis of dependencies and other aspects A provides
+    refers to a specific version of a specific package, not all versions need to
+    provide that provides.*/
+struct pkgCache::Provides
 {
-   map_ptrloc ParentPkg;        // Pacakge
+   /** \brief index of the package providing this */
+   map_ptrloc ParentPkg;        // Package
+   /** \brief index of the version this provide line applies to */
    map_ptrloc Version;          // Version
-   map_ptrloc ProvideVersion;   // Stringtable
+   /** \brief version in the provides line (if any)
+
+       This version allows dependencies to depend on specific versions of a
+       Provides, as well as allowing Provides to override existing packages.
+       This is experimental. Note that Debian doesn't allow versioned provides */
+   map_ptrloc ProvideVersion;   // StringItem
+   /** \brief next provides (based of package) */
    map_ptrloc NextProvides;     // Provides
+   /** \brief next provides (based of version) */
    map_ptrloc NextPkgProv;      // Provides
 };
 									/*}}}*/
-struct pkgCache::StringItem						/*{{{*/
+// StringItem structure							/*{{{*/
+/** \brief used for generating single instances of strings
+
+    Some things like Section Name are are useful to have as unique tags.
+    It is part of a linked list based at pkgCache::Header::StringList
+
+    All strings are simply inlined any place in the file that is natural
+    for the writer. The client should make no assumptions about the positioning
+    of strings. All StringItems should be null-terminated. */
+struct pkgCache::StringItem
 {
-   map_ptrloc String;        // Stringtable
+   /** \brief string this refers to */
+   map_ptrloc String;        // StringItem
+   /** \brief Next link in the chain */
    map_ptrloc NextItem;      // StringItem
 };
 									/*}}}*/
 #include <apt-pkg/cacheiterators.h>
 
+inline pkgCache::GrpIterator pkgCache::GrpBegin() 
+       {return GrpIterator(*this);};
+inline pkgCache::GrpIterator pkgCache::GrpEnd() 
+       {return GrpIterator(*this,GrpP);};
 inline pkgCache::PkgIterator pkgCache::PkgBegin() 
        {return PkgIterator(*this);};
 inline pkgCache::PkgIterator pkgCache::PkgEnd() 
@@ -337,7 +668,7 @@ inline pkgCache::PkgFileIterator pkgCache::FileEnd()
 class pkgCache::Namespace						/*{{{*/
 {   
    public:
-
+   typedef pkgCache::GrpIterator GrpIterator;
    typedef pkgCache::PkgIterator PkgIterator;
    typedef pkgCache::VerIterator VerIterator;
    typedef pkgCache::DescIterator DescIterator;
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index 3eeb18cae..c9a9a753c 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -18,6 +18,7 @@
 #include <apt-pkg/progress.h>
 #include <apt-pkg/sourcelist.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/pkgsystem.h>
@@ -35,10 +36,11 @@
 #include <stdio.h>
 									/*}}}*/
 typedef vector<pkgIndexFile *>::iterator FileIterator;
+template <typename Iter> std::vector<Iter*> pkgCacheGenerator::Dynamic<Iter>::toReMap;
 
 // CacheGenerator::pkgCacheGenerator - Constructor			/*{{{*/
 // ---------------------------------------------------------------------
-/* We set the diry flag and make sure that is written to the disk */
+/* We set the dirty flag and make sure that is written to the disk */
 pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
 		    Map(*pMap), Cache(pMap,false), Progress(Prog),
 		    FoundFileDeps(0)
@@ -60,8 +62,12 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
 
       // Starting header
       *Cache.HeaderP = pkgCache::Header();
-      Cache.HeaderP->VerSysName = Map.WriteString(_system->VS->Label);
-      Cache.HeaderP->Architecture = Map.WriteString(_config->Find("APT::Architecture"));
+      map_ptrloc const idxVerSysName = WriteStringInMap(_system->VS->Label);
+      Cache.HeaderP->VerSysName = idxVerSysName;
+      map_ptrloc const idxArchitecture = WriteStringInMap(_config->Find("APT::Architecture"));
+      Cache.HeaderP->Architecture = idxArchitecture;
+      if (unlikely(idxVerSysName == 0 || idxArchitecture == 0))
+	 return;
       Cache.ReMap();
    }
    else
@@ -95,6 +101,67 @@ pkgCacheGenerator::~pkgCacheGenerator()
    Map.Sync(0,sizeof(pkgCache::Header));
 }
 									/*}}}*/
+void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newMap) {/*{{{*/
+   if (oldMap == newMap)
+      return;
+
+   Cache.ReMap(false);
+
+   CurrentFile += (pkgCache::PackageFile*) newMap - (pkgCache::PackageFile*) oldMap;
+
+   for (size_t i = 0; i < _count(UniqHash); ++i)
+      if (UniqHash[i] != 0)
+	 UniqHash[i] += (pkgCache::StringItem*) newMap - (pkgCache::StringItem*) oldMap;
+
+   for (std::vector<pkgCache::GrpIterator*>::const_iterator i = Dynamic<pkgCache::GrpIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::GrpIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PkgIterator*>::const_iterator i = Dynamic<pkgCache::PkgIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::PkgIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::VerIterator*>::const_iterator i = Dynamic<pkgCache::VerIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::VerIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::DepIterator*>::const_iterator i = Dynamic<pkgCache::DepIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::DepIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::DescIterator*>::const_iterator i = Dynamic<pkgCache::DescIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::DescIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PrvIterator*>::const_iterator i = Dynamic<pkgCache::PrvIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::PrvIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+   for (std::vector<pkgCache::PkgFileIterator*>::const_iterator i = Dynamic<pkgCache::PkgFileIterator>::toReMap.begin();
+	i != Dynamic<pkgCache::PkgFileIterator>::toReMap.end(); ++i)
+      (*i)->ReMap(oldMap, newMap);
+}									/*}}}*/
+// CacheGenerator::WriteStringInMap					/*{{{*/
+map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String,
+					const unsigned long &Len) {
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.WriteString(String, Len);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+									/*}}}*/
+// CacheGenerator::WriteStringInMap					/*{{{*/
+map_ptrloc pkgCacheGenerator::WriteStringInMap(const char *String) {
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.WriteString(String);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+									/*}}}*/
+map_ptrloc pkgCacheGenerator::AllocateInMap(const unsigned long &size) {/*{{{*/
+   void const * const oldMap = Map.Data();
+   map_ptrloc const index = Map.Allocate(size);
+   if (index != 0)
+      ReMap(oldMap, Map.Data());
+   return index;
+}
+									/*}}}*/
 // CacheGenerator::MergeList - Merge the package list			/*{{{*/
 // ---------------------------------------------------------------------
 /* This provides the generation of the entries in the cache. Each loop
@@ -107,13 +174,27 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
    unsigned int Counter = 0;
    while (List.Step() == true)
    {
-      // Get a pointer to the package structure
-      string PackageName = List.Package();
+      string const PackageName = List.Package();
       if (PackageName.empty() == true)
 	 return false;
-      
+
+      /* As we handle Arch all packages as architecture bounded
+         we add all information to every (simulated) arch package */
+      std::vector<string> genArch;
+      if (List.ArchitectureAll() == true) {
+	 genArch = APT::Configuration::getArchitectures();
+	 if (genArch.size() != 1)
+	    genArch.push_back("all");
+      } else
+	 genArch.push_back(List.Architecture());
+
+      for (std::vector<string>::const_iterator arch = genArch.begin();
+	   arch != genArch.end(); ++arch)
+      {
+      // Get a pointer to the package structure
       pkgCache::PkgIterator Pkg;
-      if (NewPackage(Pkg,PackageName) == false)
+      Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+      if (NewPackage(Pkg, PackageName, *arch) == false)
 	 return _error->Error(_("Error occurred while processing %s (NewPackage)"),PackageName.c_str());
       Counter++;
       if (Counter % 100 == 0 && Progress != 0)
@@ -128,18 +209,20 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
 	 // we first process the package, then the descriptions
 	 // (this has the bonus that we get MMap error when we run out
 	 //  of MMap space)
-	 if (List.UsePackage(Pkg,pkgCache::VerIterator(Cache)) == false)
+	 pkgCache::VerIterator Ver(Cache);
+	 Dynamic<pkgCache::VerIterator> DynVer(Ver);
+	 if (List.UsePackage(Pkg, Ver) == false)
 	    return _error->Error(_("Error occurred while processing %s (UsePackage1)"),
 				 PackageName.c_str());
 
  	 // Find the right version to write the description
  	 MD5SumValue CurMd5 = List.Description_md5();
- 	 pkgCache::VerIterator Ver = Pkg.VersionList();
- 	 map_ptrloc *LastVer = &Pkg->VersionList;
+ 	 Ver = Pkg.VersionList();
 
-	 for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
+	 for (; Ver.end() == false; ++Ver)
  	 {
  	    pkgCache::DescIterator Desc = Ver.DescriptionList();
+	    Dynamic<pkgCache::DescIterator> DynDesc(Desc);
  	    map_ptrloc *LastDesc = &Ver->DescriptionList;
 	    bool duplicate=false;
 
@@ -159,7 +242,11 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
  	       if (MD5SumValue(Desc.md5()) == CurMd5) 
                {
  		  // Add new description
- 		  *LastDesc = NewDescription(Desc, List.DescriptionLanguage(), CurMd5, *LastDesc);
+		  void const * const oldMap = Map.Data();
+		  map_ptrloc const descindex = NewDescription(Desc, List.DescriptionLanguage(), CurMd5, *LastDesc);
+		  if (oldMap != Map.Data())
+		     LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+		  *LastDesc = descindex;
  		  Desc->ParentPkg = Pkg.Index();
 		  
 		  if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false)
@@ -173,19 +260,26 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
       }
 
       pkgCache::VerIterator Ver = Pkg.VersionList();
+      Dynamic<pkgCache::VerIterator> DynVer(Ver);
       map_ptrloc *LastVer = &Pkg->VersionList;
+      void const * oldMap = Map.Data();
       int Res = 1;
+      unsigned long const Hash = List.VersionHash();
       for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
       {
 	 Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
-	 if (Res >= 0)
+	 // Version is higher as current version - insert here
+	 if (Res > 0)
+	    break;
+	 // Versionstrings are equal - is hash also equal?
+	 if (Res == 0 && Ver->Hash == Hash)
 	    break;
+	 // proceed with the next till we have either the right
+	 // or we found another version (which will be lower)
       }
-      
-      /* We already have a version for this item, record that we
-         saw it */
-      unsigned long Hash = List.VersionHash();
-      if (Res == 0 && Ver->Hash == Hash)
+
+      /* We already have a version for this item, record that we saw it */
+      if (Res == 0 && Ver.end() == false && Ver->Hash == Hash)
       {
 	 if (List.UsePackage(Pkg,Ver) == false)
 	    return _error->Error(_("Error occurred while processing %s (UsePackage2)"),
@@ -204,35 +298,31 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
 	 }
 	 
 	 continue;
-      }      
-
-      // Skip to the end of the same version set.
-      if (Res == 0)
-      {
-	 for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++)
-	 {
-	    Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
-	    if (Res != 0)
-	       break;
-	 }
       }
 
       // Add a new version
-      *LastVer = NewVersion(Ver,Version,*LastVer);
+      map_ptrloc const verindex = NewVersion(Ver,Version,*LastVer);
+      if (verindex == 0 && _error->PendingError())
+	 return _error->Error(_("Error occurred while processing %s (NewVersion%d)"),
+			      PackageName.c_str(), 1);
+
+      if (oldMap != Map.Data())
+	 LastVer += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+      *LastVer = verindex;
       Ver->ParentPkg = Pkg.Index();
       Ver->Hash = Hash;
 
-      if ((*LastVer == 0 && _error->PendingError()) || List.NewVersion(Ver) == false)
-	 return _error->Error(_("Error occurred while processing %s (NewVersion1)"),
-			      PackageName.c_str());
+      if (List.NewVersion(Ver) == false)
+	 return _error->Error(_("Error occurred while processing %s (NewVersion%d)"),
+			      PackageName.c_str(), 2);
 
       if (List.UsePackage(Pkg,Ver) == false)
 	 return _error->Error(_("Error occurred while processing %s (UsePackage3)"),
 			      PackageName.c_str());
       
       if (NewFileVer(Ver,List) == false)
-	 return _error->Error(_("Error occurred while processing %s (NewVersion2)"),
-			      PackageName.c_str());
+	 return _error->Error(_("Error occurred while processing %s (NewVersion%d)"),
+			      PackageName.c_str(), 3);
 
       // Read only a single record and return
       if (OutVer != 0)
@@ -245,17 +335,23 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
       /* Record the Description data. Description data always exist in
 	 Packages and Translation-* files. */
       pkgCache::DescIterator Desc = Ver.DescriptionList();
+      Dynamic<pkgCache::DescIterator> DynDesc(Desc);
       map_ptrloc *LastDesc = &Ver->DescriptionList;
-      
+
       // Skip to the end of description set
       for (; Desc.end() == false; LastDesc = &Desc->NextDesc, Desc++);
 
       // Add new description
-      *LastDesc = NewDescription(Desc, List.DescriptionLanguage(), List.Description_md5(), *LastDesc);
+      oldMap = Map.Data();
+      map_ptrloc const descindex = NewDescription(Desc, List.DescriptionLanguage(), List.Description_md5(), *LastDesc);
+      if (oldMap != Map.Data())
+	 LastDesc += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+      *LastDesc = descindex;
       Desc->ParentPkg = Pkg.Index();
 
       if ((*LastDesc == 0 && _error->PendingError()) || NewFileDesc(Desc,List) == false)
 	 return _error->Error(_("Error occurred while processing %s (NewFileDesc2)"),PackageName.c_str());
+      }
    }
 
    FoundFileDeps |= List.HasFileDeps();
@@ -297,6 +393,7 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
 	 continue;
       
       pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
+      Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
       if (Pkg.end() == true)
 	 return _error->Error(_("Error occurred while processing %s (FindPkg)"),
 				PackageName.c_str());
@@ -306,6 +403,7 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
 
       unsigned long Hash = List.VersionHash();
       pkgCache::VerIterator Ver = Pkg.VersionList();
+      Dynamic<pkgCache::VerIterator> DynVer(Ver);
       for (; Ver.end() == false; Ver++)
       {
 	 if (Ver->Hash == Hash && Version.c_str() == Ver.VerStr())
@@ -323,33 +421,82 @@ bool pkgCacheGenerator::MergeFileProvides(ListParser &List)
    return true;
 }
 									/*}}}*/
-// CacheGenerator::NewPackage - Add a new package			/*{{{*/
+// CacheGenerator::NewGroup - Add a new group				/*{{{*/
 // ---------------------------------------------------------------------
-/* This creates a new package structure and adds it to the hash table */
-bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name)
+/* This creates a new group structure and adds it to the hash table */
+bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, const string &Name)
 {
-   Pkg = Cache.FindPkg(Name);
-   if (Pkg.end() == false)
+   Grp = Cache.FindGrp(Name);
+   if (Grp.end() == false)
       return true;
 
    // Get a structure
-   unsigned long Package = Map.Allocate(sizeof(pkgCache::Package));
-   if (Package == 0)
+   map_ptrloc const Group = AllocateInMap(sizeof(pkgCache::Group));
+   if (unlikely(Group == 0))
       return false;
-   
-   Pkg = pkgCache::PkgIterator(Cache,Cache.PkgP + Package);
-   
+
+   Grp = pkgCache::GrpIterator(Cache, Cache.GrpP + Group);
+   map_ptrloc const idxName = WriteStringInMap(Name);
+   if (unlikely(idxName == 0))
+      return false;
+   Grp->Name = idxName;
+
    // Insert it into the hash table
-   unsigned long Hash = Cache.Hash(Name);
-   Pkg->NextPackage = Cache.HeaderP->HashTable[Hash];
-   Cache.HeaderP->HashTable[Hash] = Package;
-   
-   // Set the name and the ID
-   Pkg->Name = Map.WriteString(Name);
-   if (Pkg->Name == 0)
+   unsigned long const Hash = Cache.Hash(Name);
+   Grp->Next = Cache.HeaderP->GrpHashTable[Hash];
+   Cache.HeaderP->GrpHashTable[Hash] = Group;
+
+   Grp->ID = Cache.HeaderP->GroupCount++;
+   return true;
+}
+									/*}}}*/
+// CacheGenerator::NewPackage - Add a new package			/*{{{*/
+// ---------------------------------------------------------------------
+/* This creates a new package structure and adds it to the hash table */
+bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name,
+					const string &Arch) {
+   pkgCache::GrpIterator Grp;
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+   if (unlikely(NewGroup(Grp, Name) == false))
+      return false;
+
+   Pkg = Grp.FindPkg(Arch);
+      if (Pkg.end() == false)
+	 return true;
+
+   // Get a structure
+   map_ptrloc const Package = AllocateInMap(sizeof(pkgCache::Package));
+   if (unlikely(Package == 0))
       return false;
+   Pkg = pkgCache::PkgIterator(Cache,Cache.PkgP + Package);
+
+   // Insert the package into our package list
+   if (Grp->FirstPackage == 0) // the group is new
+   {
+      // Insert it into the hash table
+      unsigned long const Hash = Cache.Hash(Name);
+      Pkg->NextPackage = Cache.HeaderP->PkgHashTable[Hash];
+      Cache.HeaderP->PkgHashTable[Hash] = Package;
+      Grp->FirstPackage = Package;
+   }
+   else // Group the Packages together
+   {
+      // this package is the new last package
+      pkgCache::PkgIterator LastPkg(Cache, Cache.PkgP + Grp->LastPackage);
+      Pkg->NextPackage = LastPkg->NextPackage;
+      LastPkg->NextPackage = Package;
+   }
+   Grp->LastPackage = Package;
+
+   // Set the name, arch and the ID
+   Pkg->Name = Grp->Name;
+   Pkg->Group = Grp.Index();
+   map_ptrloc const idxArch = WriteUniqString(Arch.c_str());
+   if (unlikely(idxArch == 0))
+      return false;
+   Pkg->Arch = idxArch;
    Pkg->ID = Cache.HeaderP->PackageCount++;
-   
+
    return true;
 }
 									/*}}}*/
@@ -363,7 +510,7 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver,
       return true;
    
    // Get a structure
-   unsigned long VerFile = Map.Allocate(sizeof(pkgCache::VerFile));
+   map_ptrloc const VerFile = AllocateInMap(sizeof(pkgCache::VerFile));
    if (VerFile == 0)
       return 0;
    
@@ -394,7 +541,7 @@ unsigned long pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver,
 					    unsigned long Next)
 {
    // Get a structure
-   unsigned long Version = Map.Allocate(sizeof(pkgCache::Version));
+   map_ptrloc const Version = AllocateInMap(sizeof(pkgCache::Version));
    if (Version == 0)
       return 0;
    
@@ -402,9 +549,10 @@ unsigned long pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver,
    Ver = pkgCache::VerIterator(Cache,Cache.VerP + Version);
    Ver->NextVer = Next;
    Ver->ID = Cache.HeaderP->VersionCount++;
-   Ver->VerStr = Map.WriteString(VerStr);
-   if (Ver->VerStr == 0)
+   map_ptrloc const idxVerStr = WriteStringInMap(VerStr);
+   if (unlikely(idxVerStr == 0))
       return 0;
+   Ver->VerStr = idxVerStr;
    
    return Version;
 }
@@ -419,7 +567,7 @@ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc,
       return true;
    
    // Get a structure
-   unsigned long DescFile = Map.Allocate(sizeof(pkgCache::DescFile));
+   map_ptrloc const DescFile = AllocateInMap(sizeof(pkgCache::DescFile));
    if (DescFile == 0)
       return false;
 
@@ -452,7 +600,7 @@ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,
 					    map_ptrloc Next)
 {
    // Get a structure
-   map_ptrloc Description = Map.Allocate(sizeof(pkgCache::Description));
+   map_ptrloc const Description = AllocateInMap(sizeof(pkgCache::Description));
    if (Description == 0)
       return 0;
 
@@ -460,73 +608,149 @@ map_ptrloc pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc,
    Desc = pkgCache::DescIterator(Cache,Cache.DescP + Description);
    Desc->NextDesc = Next;
    Desc->ID = Cache.HeaderP->DescriptionCount++;
-   Desc->language_code = Map.WriteString(Lang);
-   Desc->md5sum = Map.WriteString(md5sum.Value());
-   if (Desc->language_code == 0 || Desc->md5sum == 0)
+   map_ptrloc const idxlanguage_code = WriteStringInMap(Lang);
+   map_ptrloc const idxmd5sum = WriteStringInMap(md5sum.Value());
+   if (unlikely(idxlanguage_code == 0 || idxmd5sum == 0))
       return 0;
+   Desc->language_code = idxlanguage_code;
+   Desc->md5sum = idxmd5sum;
 
    return Description;
 }
 									/*}}}*/
-// ListParser::NewDepends - Create a dependency element			/*{{{*/
+// CacheGenerator::FinishCache - do various finish operations		/*{{{*/
+// ---------------------------------------------------------------------
+/* This prepares the Cache for delivery */
+bool pkgCacheGenerator::FinishCache(OpProgress *Progress)
+{
+   // FIXME: add progress reporting for this operation
+   // Do we have different architectures in your groups ?
+   vector<string> archs = APT::Configuration::getArchitectures();
+   if (archs.size() > 1)
+   {
+      // Create Conflicts in between the group
+      pkgCache::GrpIterator G = GetCache().GrpBegin();
+      Dynamic<pkgCache::GrpIterator> DynG(G);
+      for (; G.end() != true; G++)
+      {
+	 string const PkgName = G.Name();
+	 pkgCache::PkgIterator P = G.PackageList();
+	 Dynamic<pkgCache::PkgIterator> DynP(P);
+	 for (; P.end() != true; P = G.NextPkg(P))
+	 {
+	    if (strcmp(P.Arch(),"all") == 0)
+	       continue;
+	    pkgCache::PkgIterator allPkg;
+	    Dynamic<pkgCache::PkgIterator> DynallPkg(allPkg);
+	    pkgCache::VerIterator V = P.VersionList();
+	    Dynamic<pkgCache::VerIterator> DynV(V);
+	    for (; V.end() != true; V++)
+	    {
+	       string const Arch = V.Arch(true);
+	       map_ptrloc *OldDepLast = NULL;
+	       /* MultiArch handling introduces a lot of implicit Dependencies:
+		- MultiArch: same → Co-Installable if they have the same version
+		- Architecture: all → Need to be Co-Installable for internal reasons
+		- All others conflict with all other group members */
+	       bool const coInstall = (V->MultiArch == pkgCache::Version::All ||
+					V->MultiArch == pkgCache::Version::Same);
+	       if (V->MultiArch == pkgCache::Version::All && allPkg.end() == true)
+		  allPkg = G.FindPkg("all");
+	       for (vector<string>::const_iterator A = archs.begin(); A != archs.end(); ++A)
+	       {
+		  if (*A == Arch)
+		     continue;
+		  /* We allow only one installed arch at the time
+		     per group, therefore each group member conflicts
+		     with all other group members */
+		  pkgCache::PkgIterator D = G.FindPkg(*A);
+		  Dynamic<pkgCache::PkgIterator> DynD(D);
+		  if (D.end() == true)
+		     continue;
+		  if (coInstall == true)
+		  {
+		     // Replaces: ${self}:other ( << ${binary:Version})
+		     NewDepends(D, V, V.VerStr(),
+				pkgCache::Dep::Less, pkgCache::Dep::Replaces,
+				OldDepLast);
+		     // Breaks: ${self}:other (!= ${binary:Version})
+		     NewDepends(D, V, V.VerStr(),
+				pkgCache::Dep::NotEquals, pkgCache::Dep::DpkgBreaks,
+				OldDepLast);
+		     if (V->MultiArch == pkgCache::Version::All)
+		     {
+			// Depend on ${self}:all which does depend on nothing
+			NewDepends(allPkg, V, V.VerStr(),
+				   pkgCache::Dep::Equals, pkgCache::Dep::Depends,
+				   OldDepLast);
+		     }
+		  } else {
+			// Conflicts: ${self}:other
+			NewDepends(D, V, "",
+				   pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts,
+				   OldDepLast);
+		  }
+	       }
+	    }
+	 }
+      }
+   }
+   return true;
+}
+									/*}}}*/
+// CacheGenerator::NewDepends - Create a dependency element		/*{{{*/
 // ---------------------------------------------------------------------
 /* This creates a dependency element in the tree. It is linked to the
    version and to the package that it is pointing to. */
-bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver,
-					       const string &PackageName,
-					       const string &Version,
-					       unsigned int Op,
-					       unsigned int Type)
+bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg,
+				   pkgCache::VerIterator &Ver,
+				   string const &Version,
+				   unsigned int const &Op,
+				   unsigned int const &Type,
+				   map_ptrloc *OldDepLast)
 {
-   pkgCache &Cache = Owner->Cache;
-   
+   void const * const oldMap = Map.Data();
    // Get a structure
-   unsigned long Dependency = Owner->Map.Allocate(sizeof(pkgCache::Dependency));
-   if (Dependency == 0)
+   map_ptrloc const Dependency = AllocateInMap(sizeof(pkgCache::Dependency));
+   if (unlikely(Dependency == 0))
       return false;
    
    // Fill it in
    pkgCache::DepIterator Dep(Cache,Cache.DepP + Dependency);
+   Dynamic<pkgCache::DepIterator> DynDep(Dep);
    Dep->ParentVer = Ver.Index();
    Dep->Type = Type;
    Dep->CompareOp = Op;
    Dep->ID = Cache.HeaderP->DependsCount++;
-   
-   // Locate the target package
-   pkgCache::PkgIterator Pkg;
-   if (Owner->NewPackage(Pkg,PackageName) == false)
-      return false;
-   
+
    // Probe the reverse dependency list for a version string that matches
    if (Version.empty() == false)
    {
 /*      for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++)
 	 if (I->Version != 0 && I.TargetVer() == Version)
 	    Dep->Version = I->Version;*/
-      if (Dep->Version == 0)
-	 if ((Dep->Version = WriteString(Version)) == 0)
+      if (Dep->Version == 0) {
+	 map_ptrloc const index = WriteStringInMap(Version);
+	 if (unlikely(index == 0))
 	    return false;
+	 Dep->Version = index;
+      }
    }
-      
+
    // Link it to the package
    Dep->Package = Pkg.Index();
    Dep->NextRevDepends = Pkg->RevDepends;
    Pkg->RevDepends = Dep.Index();
-   
-   /* Link it to the version (at the end of the list)
-      Caching the old end point speeds up generation substantially */
-   if (OldDepVer != Ver)
+
+   // Do we know where to link the Dependency to?
+   if (OldDepLast == NULL)
    {
       OldDepLast = &Ver->DependsList;
       for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
 	 OldDepLast = &D->NextDepends;
-      OldDepVer = Ver;
-   }
+   } else if (oldMap != Map.Data())
+      OldDepLast += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
 
-   // Is it a file dependency?
-   if (PackageName[0] == '/')
-      FoundFileDeps = true;
-   
    Dep->NextDepends = *OldDepLast;
    *OldDepLast = Dep.Index();
    OldDepLast = &Dep->NextDepends;
@@ -534,36 +758,76 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver,
    return true;
 }
 									/*}}}*/
+// ListParser::NewDepends - Create the environment for a new dependency	/*{{{*/
+// ---------------------------------------------------------------------
+/* This creates a Group and the Package to link this dependency to if
+   needed and handles also the caching of the old endpoint */
+bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator &Ver,
+					       const string &PackageName,
+					       const string &Arch,
+					       const string &Version,
+					       unsigned int Op,
+					       unsigned int Type)
+{
+   pkgCache::GrpIterator Grp;
+   Dynamic<pkgCache::GrpIterator> DynGrp(Grp);
+   if (unlikely(Owner->NewGroup(Grp, PackageName) == false))
+      return false;
+
+   // Locate the target package
+   pkgCache::PkgIterator Pkg = Grp.FindPkg(Arch);
+   Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+   if (Pkg.end() == true) {
+      if (unlikely(Owner->NewPackage(Pkg, PackageName, Arch) == false))
+	 return false;
+   }
+
+   // Is it a file dependency?
+   if (unlikely(PackageName[0] == '/'))
+      FoundFileDeps = true;
+
+   /* Caching the old end point speeds up generation substantially */
+   if (OldDepVer != Ver) {
+      OldDepLast = NULL;
+      OldDepVer = Ver;
+   }
+
+   return Owner->NewDepends(Pkg, Ver, Version, Op, Type, OldDepLast);
+}
+									/*}}}*/
 // ListParser::NewProvides - Create a Provides element			/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver,
-					        const string &PackageName,
+bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver,
+					        const string &PkgName,
+						const string &PkgArch,
 						const string &Version)
 {
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides
-   if (Ver.ParentPkg().Name() == PackageName)
+   if (Ver.ParentPkg().Name() == PkgName && PkgArch == Ver.Arch(true))
       return true;
    
    // Get a structure
-   unsigned long Provides = Owner->Map.Allocate(sizeof(pkgCache::Provides));
-   if (Provides == 0)
+   map_ptrloc const Provides = Owner->AllocateInMap(sizeof(pkgCache::Provides));
+   if (unlikely(Provides == 0))
       return false;
    Cache.HeaderP->ProvidesCount++;
    
    // Fill it in
    pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP);
+   Dynamic<pkgCache::PrvIterator> DynPrv(Prv);
    Prv->Version = Ver.Index();
    Prv->NextPkgProv = Ver->ProvidesList;
    Ver->ProvidesList = Prv.Index();
-   if (Version.empty() == false && (Prv->ProvideVersion = WriteString(Version)) == 0)
+   if (Version.empty() == false && unlikely((Prv->ProvideVersion = WriteString(Version)) == 0))
       return false;
    
    // Locate the target package
    pkgCache::PkgIterator Pkg;
-   if (Owner->NewPackage(Pkg,PackageName) == false)
+   Dynamic<pkgCache::PkgIterator> DynPkg(Pkg);
+   if (unlikely(Owner->NewPackage(Pkg,PkgName, PkgArch) == false))
       return false;
    
    // Link it to the package
@@ -583,24 +847,29 @@ bool pkgCacheGenerator::SelectFile(const string &File,const string &Site,
 				   unsigned long Flags)
 {
    // Get some space for the structure
-   CurrentFile = Cache.PkgFileP + Map.Allocate(sizeof(*CurrentFile));
-   if (CurrentFile == Cache.PkgFileP)
+   map_ptrloc const idxFile = AllocateInMap(sizeof(*CurrentFile));
+   if (unlikely(idxFile == 0))
       return false;
-   
+   CurrentFile = Cache.PkgFileP + idxFile;
+
    // Fill it in
-   CurrentFile->FileName = Map.WriteString(File);
-   CurrentFile->Site = WriteUniqString(Site);
+   map_ptrloc const idxFileName = WriteStringInMap(File);
+   map_ptrloc const idxSite = WriteUniqString(Site);
+   if (unlikely(idxFileName == 0 || idxSite == 0))
+      return false;
+   CurrentFile->FileName = idxFileName;
+   CurrentFile->Site = idxSite;
    CurrentFile->NextFile = Cache.HeaderP->FileList;
    CurrentFile->Flags = Flags;
    CurrentFile->ID = Cache.HeaderP->PackageFileCount;
-   CurrentFile->IndexType = WriteUniqString(Index.GetType()->Label);
+   map_ptrloc const idxIndexType = WriteUniqString(Index.GetType()->Label);
+   if (unlikely(idxIndexType == 0))
+      return false;
+   CurrentFile->IndexType = idxIndexType;
    PkgFileName = File;
    Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP;
    Cache.HeaderP->PackageFileCount++;
 
-   if (CurrentFile->FileName == 0)
-      return false;
-   
    if (Progress != 0)
       Progress->SubProgress(Index.Size());
    return true;
@@ -640,18 +909,25 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S,
    }
    
    // Get a structure
-   unsigned long Item = Map.Allocate(sizeof(pkgCache::StringItem));
+   void const * const oldMap = Map.Data();
+   map_ptrloc const Item = AllocateInMap(sizeof(pkgCache::StringItem));
    if (Item == 0)
       return 0;
 
+   map_ptrloc const idxString = WriteStringInMap(S,Size);
+   if (unlikely(idxString == 0))
+      return 0;
+   if (oldMap != Map.Data()) {
+      Last += (map_ptrloc*) Map.Data() - (map_ptrloc*) oldMap;
+      I += (pkgCache::StringItem*) Map.Data() - (pkgCache::StringItem*) oldMap;
+   }
+   *Last = Item;
+
    // Fill in the structure
    pkgCache::StringItem *ItemP = Cache.StringItemP + Item;
    ItemP->NextItem = I - Cache.StringItemP;
-   *Last = Item;
-   ItemP->String = Map.WriteString(S,Size);
-   if (ItemP->String == 0)
-      return 0;
-   
+   ItemP->String = idxString;
+
    Bucket = ItemP;
    return ItemP->String;
 }
@@ -769,7 +1045,7 @@ static unsigned long ComputeSize(FileIterator Start,FileIterator End)
 // ---------------------------------------------------------------------
 /* */
 static bool BuildCache(pkgCacheGenerator &Gen,
-		       OpProgress &Progress,
+		       OpProgress *Progress,
 		       unsigned long &CurrentSize,unsigned long TotalSize,
 		       FileIterator Start, FileIterator End)
 {
@@ -790,7 +1066,8 @@ static bool BuildCache(pkgCacheGenerator &Gen,
       }
       
       unsigned long Size = (*I)->Size();
-      Progress.OverallProgress(CurrentSize,TotalSize,Size,_("Reading package lists"));
+      if (Progress != NULL)
+	 Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Reading package lists"));
       CurrentSize += Size;
       
       if ((*I)->Merge(Gen,Progress) == false)
@@ -799,13 +1076,15 @@ static bool BuildCache(pkgCacheGenerator &Gen,
 
    if (Gen.HasFileDeps() == true)
    {
-      Progress.Done();
+      if (Progress != NULL)
+	 Progress->Done();
       TotalSize = ComputeSize(Start, End);
       CurrentSize = 0;
       for (I = Start; I != End; I++)
       {
 	 unsigned long Size = (*I)->Size();
-	 Progress.OverallProgress(CurrentSize,TotalSize,Size,_("Collecting File Provides"));
+	 if (Progress != NULL)
+	    Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Collecting File Provides"));
 	 CurrentSize += Size;
 	 if ((*I)->MergeFileProvides(Gen,Progress) == false)
 	    return false;
@@ -815,7 +1094,21 @@ static bool BuildCache(pkgCacheGenerator &Gen,
    return true;
 }
 									/*}}}*/
-// MakeStatusCache - Construct the status cache				/*{{{*/
+// CacheGenerator::CreateDynamicMMap - load an mmap with configuration options	/*{{{*/
+DynamicMMap* pkgCacheGenerator::CreateDynamicMMap(FileFd *CacheF, unsigned long Flags) {
+   unsigned long const MapStart = _config->FindI("APT::Cache-Start", 24*1024*1024);
+   unsigned long const MapGrow = _config->FindI("APT::Cache-Grow", 1*1024*1024);
+   unsigned long const MapLimit = _config->FindI("APT::Cache-Limit", 0);
+   Flags |= MMap::Moveable;
+   if (_config->FindB("APT::Cache-Fallback", false) == true)
+      Flags |= MMap::Fallback;
+   if (CacheF != NULL)
+      return new DynamicMMap(*CacheF, Flags, MapStart, MapGrow, MapLimit);
+   else
+      return new DynamicMMap(Flags, MapStart, MapGrow, MapLimit);
+}
+									/*}}}*/
+// CacheGenerator::MakeStatusCache - Construct the status cache		/*{{{*/
 // ---------------------------------------------------------------------
 /* This makes sure that the status cache (the cache that has all 
    index files from the sources list and all local ones) is ready
@@ -823,11 +1116,13 @@ static bool BuildCache(pkgCacheGenerator &Gen,
    the cache will be stored there. This is pretty much mandetory if you
    are using AllowMem. AllowMem lets the function be run as non-root
    where it builds the cache 'fast' into a memory buffer. */
-bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+__deprecated bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+			MMap **OutMap, bool AllowMem)
+   { return pkgCacheGenerator::MakeStatusCache(List, &Progress, OutMap, AllowMem); }
+bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress,
 			MMap **OutMap,bool AllowMem)
 {
    bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
-   unsigned long const MapSize = _config->FindI("APT::Cache-Limit",24*1024*1024);
    
    vector<pkgIndexFile *> Files;
    for (vector<metaIndex *>::const_iterator i = List.begin();
@@ -848,7 +1143,20 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    // Decide if we can write to the files..
    string const CacheFile = _config->FindFile("Dir::Cache::pkgcache");
    string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
-   
+
+   // ensure the cache directory exists
+   if (CacheFile.empty() == false || SrcCacheFile.empty() == false)
+   {
+      string dir = _config->FindDir("Dir::Cache");
+      size_t const len = dir.size();
+      if (len > 5 && dir.find("/apt/", len - 6, 5) == len - 5)
+	 dir = dir.substr(0, len - 5);
+      if (CacheFile.empty() == false)
+	 CreateDirectory(dir, flNotFile(CacheFile));
+      if (SrcCacheFile.empty() == false)
+	 CreateDirectory(dir, flNotFile(SrcCacheFile));
+   }
+
    // Decide if we can write to the cache
    bool Writeable = false;
    if (CacheFile.empty() == false)
@@ -861,13 +1169,15 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
 
    if (Writeable == false && AllowMem == false && CacheFile.empty() == false)
       return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str());
-   
-   Progress.OverallProgress(0,1,1,_("Reading package lists"));
-   
+
+   if (Progress != NULL)
+      Progress->OverallProgress(0,1,1,_("Reading package lists"));
+
    // Cache is OK, Fin.
    if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true)
    {
-      Progress.OverallProgress(1,1,1,_("Reading package lists"));
+      if (Progress != NULL)
+	 Progress->OverallProgress(1,1,1,_("Reading package lists"));
       if (Debug == true)
 	 std::clog << "pkgcache.bin is valid - no need to build anything" << std::endl;
       return true;
@@ -884,7 +1194,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       unlink(CacheFile.c_str());
       CacheF = new FileFd(CacheFile,FileFd::WriteEmpty);
       fchmod(CacheF->Fd(),0644);
-      Map = new DynamicMMap(*CacheF,MMap::Public,MapSize);
+      Map = CreateDynamicMMap(CacheF, MMap::Public);
       if (_error->PendingError() == true)
 	 return false;
       if (Debug == true)
@@ -893,7 +1203,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    else
    {
       // Just build it in memory..
-      Map = new DynamicMMap(0,MapSize);
+      Map = CreateDynamicMMap(NULL);
       if (Debug == true)
 	 std::clog << "Open memory Map (not filebased)" << std::endl;
    }
@@ -917,12 +1227,15 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
 
       // Build the status cache
-      pkgCacheGenerator Gen(Map.Get(),&Progress);
+      pkgCacheGenerator Gen(Map.Get(),Progress);
       if (_error->PendingError() == true)
 	 return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
 		     Files.begin()+EndOfSource,Files.end()) == false)
 	 return false;
+
+      // FIXME: move me to a better place
+      Gen.FinishCache(Progress);
    }
    else
    {
@@ -931,7 +1244,7 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       TotalSize = ComputeSize(Files.begin(),Files.end());
       
       // Build the source cache
-      pkgCacheGenerator Gen(Map.Get(),&Progress);
+      pkgCacheGenerator Gen(Map.Get(),Progress);
       if (_error->PendingError() == true)
 	 return false;
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
@@ -965,6 +1278,9 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
 		     Files.begin()+EndOfSource,Files.end()) == false)
 	 return false;
+
+      // FIXME: move me to a better place
+      Gen.FinishCache(Progress);
    }
    if (Debug == true)
       std::clog << "Caches are ready for shipping" << std::endl;
@@ -987,32 +1303,37 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    return true;
 }
 									/*}}}*/
-// MakeOnlyStatusCache - Build a cache with just the status files	/*{{{*/
+// CacheGenerator::MakeOnlyStatusCache - Build only a status files cache/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
+__deprecated bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
+   { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); }
+bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap)
 {
-   unsigned long MapSize = _config->FindI("APT::Cache-Limit",20*1024*1024);
    vector<pkgIndexFile *> Files;
    unsigned long EndOfSource = Files.size();
    if (_system->AddStatusFiles(Files) == false)
       return false;
-   
-   SPtr<DynamicMMap> Map = new DynamicMMap(0,MapSize);
+
+   SPtr<DynamicMMap> Map = CreateDynamicMMap(NULL);
    unsigned long CurrentSize = 0;
    unsigned long TotalSize = 0;
    
    TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
    
    // Build the status cache
-   Progress.OverallProgress(0,1,1,_("Reading package lists"));
-   pkgCacheGenerator Gen(Map.Get(),&Progress);
+   if (Progress != NULL)
+      Progress->OverallProgress(0,1,1,_("Reading package lists"));
+   pkgCacheGenerator Gen(Map.Get(),Progress);
    if (_error->PendingError() == true)
       return false;
    if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
 		  Files.begin()+EndOfSource,Files.end()) == false)
       return false;
-   
+
+   // FIXME: move me to a better place
+   Gen.FinishCache(Progress);
+
    if (_error->PendingError() == true)
       return false;
    *OutMap = Map.UnGuard();
diff --git a/apt-pkg/pkgcachegen.h b/apt-pkg/pkgcachegen.h
index 108b34207..ff198833a 100644
--- a/apt-pkg/pkgcachegen.h
+++ b/apt-pkg/pkgcachegen.h
@@ -23,6 +23,8 @@
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/md5.h>
 
+#include <vector>
+
 class pkgSourceList;
 class OpProgress;
 class MMap;
@@ -31,16 +33,32 @@ class pkgIndexFile;
 class pkgCacheGenerator							/*{{{*/
 {
    private:
-   
+
    pkgCache::StringItem *UniqHash[26];
-   
+   map_ptrloc WriteStringInMap(std::string const &String) { return WriteStringInMap(String.c_str()); };
+   map_ptrloc WriteStringInMap(const char *String);
+   map_ptrloc WriteStringInMap(const char *String, const unsigned long &Len);
+   map_ptrloc AllocateInMap(const unsigned long &size);
+
    public:
    
    class ListParser;
    friend class ListParser;
-   
+
+   template<typename Iter> class Dynamic {
+      public:
+      static std::vector<Iter*> toReMap;
+      Dynamic(Iter &I) {
+	 toReMap.push_back(&I);
+      }
+
+      ~Dynamic() {
+	 toReMap.pop_back();
+      }
+   };
+
    protected:
-   
+
    DynamicMMap &Map;
    pkgCache Cache;
    OpProgress *Progress;
@@ -51,9 +69,13 @@ class pkgCacheGenerator							/*{{{*/
    // Flag file dependencies
    bool FoundFileDeps;
    
-   bool NewPackage(pkgCache::PkgIterator &Pkg,const string &PkgName);
+   bool NewGroup(pkgCache::GrpIterator &Grp,const string &Name);
+   bool NewPackage(pkgCache::PkgIterator &Pkg,const string &Name, const string &Arch);
    bool NewFileVer(pkgCache::VerIterator &Ver,ListParser &List);
    bool NewFileDesc(pkgCache::DescIterator &Desc,ListParser &List);
+   bool NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver,
+		   string const &Version, unsigned int const &Op,
+		   unsigned int const &Type, map_ptrloc *OldDepLast);
    unsigned long NewVersion(pkgCache::VerIterator &Ver,const string &VerStr,unsigned long Next);
    map_ptrloc NewDescription(pkgCache::DescIterator &Desc,const string &Lang,const MD5SumValue &md5sum,map_ptrloc Next);
 
@@ -72,7 +94,15 @@ class pkgCacheGenerator							/*{{{*/
 
    bool HasFileDeps() {return FoundFileDeps;};
    bool MergeFileProvides(ListParser &List);
-      
+   bool FinishCache(OpProgress *Progress);
+
+   static bool MakeStatusCache(pkgSourceList &List,OpProgress *Progress,
+			MMap **OutMap = 0,bool AllowMem = false);
+   static bool MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap);
+   static DynamicMMap* CreateDynamicMMap(FileFd *CacheF, unsigned long Flags = 0);
+
+   void ReMap(void const * const oldMap, void const * const newMap);
+
    pkgCacheGenerator(DynamicMMap *Map,OpProgress *Progress);
    ~pkgCacheGenerator();
 };
@@ -94,26 +124,28 @@ class pkgCacheGenerator::ListParser
 
    inline unsigned long WriteUniqString(string S) {return Owner->WriteUniqString(S);};
    inline unsigned long WriteUniqString(const char *S,unsigned int Size) {return Owner->WriteUniqString(S,Size);};
-   inline unsigned long WriteString(const string &S) {return Owner->Map.WriteString(S);};
-   inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->Map.WriteString(S,Size);};
-   bool NewDepends(pkgCache::VerIterator Ver,const string &Package,
+   inline unsigned long WriteString(const string &S) {return Owner->WriteStringInMap(S);};
+   inline unsigned long WriteString(const char *S,unsigned int Size) {return Owner->WriteStringInMap(S,Size);};
+   bool NewDepends(pkgCache::VerIterator &Ver,const string &Package, const string &Arch,
 		   const string &Version,unsigned int Op,
 		   unsigned int Type);
-   bool NewProvides(pkgCache::VerIterator Ver,const string &Package,
-		    const string &Version);
+   bool NewProvides(pkgCache::VerIterator &Ver,const string &PkgName,
+		    const string &PkgArch, const string &Version);
    
    public:
    
    // These all operate against the current section
    virtual string Package() = 0;
+   virtual string Architecture() = 0;
+   virtual bool ArchitectureAll() = 0;
    virtual string Version() = 0;
-   virtual bool NewVersion(pkgCache::VerIterator Ver) = 0;
+   virtual bool NewVersion(pkgCache::VerIterator &Ver) = 0;
    virtual string Description() = 0;
    virtual string DescriptionLanguage() = 0;
    virtual MD5SumValue Description_md5() = 0;
    virtual unsigned short VersionHash() = 0;
-   virtual bool UsePackage(pkgCache::PkgIterator Pkg,
-			   pkgCache::VerIterator Ver) = 0;
+   virtual bool UsePackage(pkgCache::PkgIterator &Pkg,
+			   pkgCache::VerIterator &Ver) = 0;
    virtual unsigned long Offset() = 0;
    virtual unsigned long Size() = 0;
    
@@ -121,16 +153,18 @@ class pkgCacheGenerator::ListParser
    
    inline bool HasFileDeps() {return FoundFileDeps;};
    virtual bool CollectFileProvides(pkgCache &Cache,
-				    pkgCache::VerIterator Ver) {return true;};
+				    pkgCache::VerIterator &Ver) {return true;};
 
    ListParser() : FoundFileDeps(false) {};
    virtual ~ListParser() {};
 };
 									/*}}}*/
+
 bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
 			MMap **OutMap = 0,bool AllowMem = false);
 bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
 
+
 #ifdef APT_COMPATIBILITY
 #if APT_COMPATIBILITY != 986
 #warning "Using APT_COMPATIBILITY"
@@ -138,7 +172,7 @@ bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap);
 MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress)
 {
    MMap *Map = 0;
-   if (pkgMakeStatusCache(List,Progress,&Map,true) == false)
+   if (pkgCacheGenerator::MakeStatusCache(List,&Progress,&Map,true) == false)
       return 0;
    return Map;
 }
diff --git a/apt-pkg/pkgrecords.cc b/apt-pkg/pkgrecords.cc
index a5dab22ff..e506de73a 100644
--- a/apt-pkg/pkgrecords.cc
+++ b/apt-pkg/pkgrecords.cc
@@ -23,8 +23,8 @@
 pkgRecords::pkgRecords(pkgCache &Cache) : Cache(Cache), 
   Files(Cache.HeaderP->PackageFileCount)
 {
-   for (pkgCache::PkgFileIterator I = Cache.FileBegin(); 
-	I.end() == false; I++)
+   for (pkgCache::PkgFileIterator I = Cache.FileBegin();
+        I.end() == false; I++)
    {
       const pkgIndexFile::Type *Type = pkgIndexFile::Type::GetType(I.IndexType());
       if (Type == 0)
diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index f9901bc9a..a3286391b 100644
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -106,7 +106,7 @@ bool pkgPolicy::InitDefaults()
 
    if (_config->FindB("Debug::pkgPolicy",false) == true)
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
-	 cout << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << endl; 
+	 std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl; 
    
    return true;   
 }
@@ -115,12 +115,16 @@ bool pkgPolicy::InitDefaults()
 // ---------------------------------------------------------------------
 /* Evaluate the package pins and the default list to deteremine what the
    best package is. */
-pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pkg)
 {
    // Look for a package pin and evaluate it.
    signed Max = GetPriority(Pkg);
    pkgCache::VerIterator Pref = GetMatch(Pkg);
 
+   // Alternatives in case we can not find our package pin (Bug#512318).
+   signed MaxAlt = 0;
+   pkgCache::VerIterator PrefAlt;
+
    // no package = no candidate version
    if (Pkg.end() == true)
       return Pref;
@@ -143,6 +147,16 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
    {
+      /* Lets see if this version is the installed version */
+      bool instVer = (Pkg.CurrentVer() == Ver);
+      if (Ver.Pseudo() == true && instVer == false)
+      {
+	 pkgCache::PkgIterator const allPkg = Ver.ParentPkg().Group().FindPkg("all");
+	 if (allPkg->CurrentVer != 0 && allPkg.CurrentVer()->Hash == Ver->Hash &&
+	     strcmp(allPkg.CurVersion(), Ver.VerStr()) == 0)
+	    instVer = true;
+      }
+
       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
 	 /* If this is the status file, and the current version is not the
@@ -151,18 +165,23 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 	    out bogus entries that may be due to config-file states, or
 	    other. */
 	 if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&
-	     Pkg.CurrentVer() != Ver)
+	     instVer == false)
 	    continue;
-	 	 	 
+
 	 signed Prio = PFPriority[VF.File()->ID];
 	 if (Prio > Max)
 	 {
 	    Pref = Ver;
 	    Max = Prio;
+	 }
+	 if (Prio > MaxAlt)
+	 {
+	    PrefAlt = Ver;
+	    MaxAlt = Prio;
 	 }	 
       }      
       
-      if (Pkg.CurrentVer() == Ver && Max < 1000)
+      if (instVer == true && Max < 1000)
       {
 	 /* Elevate our current selection (or the status file itself)
 	    to the Pseudo-status priority. */
@@ -175,6 +194,12 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 	    break;
       }            
    }
+   // If we do not find our candidate, use the one with the highest pin.
+   // This means that if there is a version available with pin > 0; there
+   // will always be a candidate (Closes: #512318)
+   if (!Pref.IsGood() && MaxAlt > 0)
+       Pref = PrefAlt;
+
    return Pref;
 }
 									/*}}}*/
@@ -187,49 +212,51 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
 			  string Data,signed short Priority)
 {
-   Pin *P = 0;
-   
    if (Name.empty() == true)
-      P = &*Defaults.insert(Defaults.end(),PkgPin());
-   else
    {
-      // Get a spot to put the pin
-      pkgCache::PkgIterator Pkg = Cache->FindPkg(Name);
-      if (Pkg.end() == true)
+      Pin *P = &*Defaults.insert(Defaults.end(),PkgPin());
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
+      return;
+   }
+
+   // Get a spot to put the pin
+   pkgCache::GrpIterator Grp = Cache->FindGrp(Name);
+   for (pkgCache::PkgIterator Pkg = Grp.FindPkg("any");
+	Pkg.end() != true; Pkg = Grp.NextPkg(Pkg))
+   {
+      Pin *P = 0;
+      if (Pkg.end() == false)
+	 P = Pins + Pkg->ID;
+      else
       {
 	 // Check the unmatched table
-	 for (vector<PkgPin>::iterator I = Unmatched.begin(); 
+	 for (vector<PkgPin>::iterator I = Unmatched.begin();
 	      I != Unmatched.end() && P == 0; I++)
 	    if (I->Pkg == Name)
 	       P = &*I;
-	 
+
 	 if (P == 0)
-	    P = &*Unmatched.insert(Unmatched.end(),PkgPin());      
+	    P = &*Unmatched.insert(Unmatched.end(),PkgPin());
       }
-      else
-      {
-	 P = Pins + Pkg->ID;
-      }      
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
    }
-   
-   // Set..
-   P->Type = Type;
-   P->Priority = Priority;
-   P->Data = Data;
 }
 									/*}}}*/
 // Policy::GetMatch - Get the matching version for a package pin	/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator const &Pkg)
 {
    const Pin &PPkg = Pins[Pkg->ID];
-   if (PPkg.Type != pkgVersionMatch::None)
-   {
-      pkgVersionMatch Match(PPkg.Data,PPkg.Type);
-      return Match.Find(Pkg);
-   }
-   return pkgCache::VerIterator(*Pkg.Cache());
+   if (PPkg.Type == pkgVersionMatch::None)
+      return pkgCache::VerIterator(*Pkg.Cache());
+
+   pkgVersionMatch Match(PPkg.Data,PPkg.Type);
+   return Match.Find(Pkg);
 }
 									/*}}}*/
 // Policy::GetPriority - Get the priority of the package pin		/*{{{*/
@@ -274,9 +301,9 @@ bool ReadPinDir(pkgPolicy &Plcy,string Dir)
    if (Dir.empty() == true)
       Dir = _config->FindDir("Dir::Etc::PreferencesParts");
 
-   if (FileExists(Dir) == false)
+   if (DirectoryExists(Dir) == false)
    {
-      _error->WarningE("FileExists",_("Unable to read %s"),Dir.c_str());
+      _error->WarningE("DirectoryExists",_("Unable to read %s"),Dir.c_str());
       return true;
    }
 
diff --git a/apt-pkg/policy.h b/apt-pkg/policy.h
index 4894682fa..f8b2678de 100644
--- a/apt-pkg/policy.h
+++ b/apt-pkg/policy.h
@@ -72,11 +72,11 @@ class pkgPolicy : public pkgDepCache::Policy
    inline signed short GetPriority(pkgCache::PkgFileIterator const &File) 
        {return PFPriority[File->ID];};
    signed short GetPriority(pkgCache::PkgIterator const &Pkg);
-   pkgCache::VerIterator GetMatch(pkgCache::PkgIterator Pkg);
+   pkgCache::VerIterator GetMatch(pkgCache::PkgIterator const &Pkg);
 
    // Things for the cache interface.
-   virtual pkgCache::VerIterator GetCandidateVer(pkgCache::PkgIterator Pkg);
-   virtual bool IsImportantDep(pkgCache::DepIterator Dep) {return pkgDepCache::Policy::IsImportantDep(Dep);};
+   virtual pkgCache::VerIterator GetCandidateVer(pkgCache::PkgIterator const &Pkg);
+   virtual bool IsImportantDep(pkgCache::DepIterator const &Dep) {return pkgDepCache::Policy::IsImportantDep(Dep);};
    bool InitDefaults();
    
    pkgPolicy(pkgCache *Owner);
diff --git a/apt-pkg/sourcelist.cc b/apt-pkg/sourcelist.cc
index 929259961..c3ec9865a 100644
--- a/apt-pkg/sourcelist.cc
+++ b/apt-pkg/sourcelist.cc
@@ -72,13 +72,58 @@ bool pkgSourceList::Type::FixupURI(string &URI) const
    Weird types may override this. */
 bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
 				    const char *Buffer,
-				    unsigned long CurLine,
-				    string File) const
+				    unsigned long const &CurLine,
+				    string const &File) const
 {
+   for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
+
+   // Parse option field if it exists
+   // e.g.: [ option1=value1 option2=value2 ]
+   map<string, string> Options;
+   if (Buffer != 0 && Buffer[0] == '[')
+   {
+      ++Buffer; // ignore the [
+      for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
+      while (*Buffer != ']')
+      {
+	 // get one option, e.g. option1=value1
+	 string option;
+	 if (ParseQuoteWord(Buffer,option) == false)
+	    return _error->Error(_("Malformed line %lu in source list %s ([option] unparseable)"),CurLine,File.c_str());
+
+	 if (option.length() < 3)
+	    return _error->Error(_("Malformed line %lu in source list %s ([option] too short)"),CurLine,File.c_str());
+
+	 // accept options even if the last has no space before the ]-end marker
+	 if (option.at(option.length()-1) == ']')
+	 {
+	    for (; *Buffer != ']'; --Buffer);
+	    option.resize(option.length()-1);
+	 }
+
+	 size_t const needle = option.find('=');
+	 if (needle == string::npos)
+	    return _error->Error(_("Malformed line %lu in source list %s ([%s] is not an assignment)"),CurLine,File.c_str(), option.c_str());
+
+	 string const key = string(option, 0, needle);
+	 string const value = string(option, needle + 1, option.length());
+
+	 if (key.empty() == true)
+	    return _error->Error(_("Malformed line %lu in source list %s ([%s] has no key)"),CurLine,File.c_str(), option.c_str());
+
+	 if (value.empty() == true)
+	    return _error->Error(_("Malformed line %lu in source list %s ([%s] key %s has no value)"),CurLine,File.c_str(),option.c_str(),key.c_str());
+
+	 Options[key] = value;
+      }
+      ++Buffer; // ignore the ]
+      for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
+   }
+
    string URI;
    string Dist;
-   string Section;   
-   
+   string Section;
+
    if (ParseQuoteWord(Buffer,URI) == false)
       return _error->Error(_("Malformed line %lu in source list %s (URI)"),CurLine,File.c_str());
    if (ParseQuoteWord(Buffer,Dist) == false)
@@ -93,7 +138,7 @@ bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
       if (ParseQuoteWord(Buffer,Section) == true)
 	 return _error->Error(_("Malformed line %lu in source list %s (absolute dist)"),CurLine,File.c_str());
       Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
-      return CreateItem(List,URI,Dist,Section);
+      return CreateItem(List, URI, Dist, Section, Options);
    }
    
    // Grab the rest of the dists
@@ -102,7 +147,7 @@ bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
    
    do
    {
-      if (CreateItem(List,URI,Dist,Section) == false)
+      if (CreateItem(List, URI, Dist, Section, Options) == false)
 	 return false;
    }
    while (ParseQuoteWord(Buffer,Section) == true);
@@ -154,15 +199,15 @@ bool pkgSourceList::ReadMainList()
    
    if (FileExists(Main) == true)
       Res &= ReadAppend(Main);
-   else if (FileExists(Parts) == false)
+   else if (DirectoryExists(Parts) == false)
       // Only warn if there are no sources.list.d.
-      _error->WarningE("FileExists",_("Unable to read %s"),Main.c_str());
+      _error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
 
-   if (FileExists(Parts) == true)
+   if (DirectoryExists(Parts) == true)
       Res &= ReadSourceDir(Parts);
    else if (FileExists(Main) == false)
       // Only warn if there is no sources.list file.
-      _error->WarningE("FileExists",_("Unable to read %s"),Parts.c_str());
+      _error->WarningE("FileExists", _("Unable to read %s"), Main.c_str());
 
    return Res;
 }
@@ -239,36 +284,7 @@ bool pkgSourceList::ReadAppend(string File)
       if (Parse == 0)
 	 return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
       
-      // Vendor name specified
-      if (C[0] == '[')
-      {
-	 string VendorID;
-	 
-	 if (ParseQuoteWord(C,VendorID) == false)
-	     return _error->Error(_("Malformed line %u in source list %s (vendor id)"),CurLine,File.c_str());
-
-	 if (VendorID.length() < 2 || VendorID.end()[-1] != ']')
-	     return _error->Error(_("Malformed line %u in source list %s (vendor id)"),CurLine,File.c_str());
-	 VendorID = string(VendorID,1,VendorID.size()-2);
-	 
-// 	 for (vector<const Vendor *>::const_iterator iter = VendorList.begin();
-// 	      iter != VendorList.end(); iter++) 
-// 	 {
-// 	    if ((*iter)->GetVendorID() == VendorID)
-// 	    {
-// 	      if (_config->FindB("Debug::sourceList", false)) 
-// 		std::cerr << "Comparing VendorID \"" << VendorID << "\" with \"" << (*iter)->GetVendorID() << '"' << std::endl;
-// 	       Verifier = *iter;
-// 	       break;
-// 	    }
-// 	 }
-
-// 	 if (Verifier == 0)
-// 	    return _error->Error(_("Unknown vendor ID '%s' in line %u of source list %s"),
-// 				 VendorID.c_str(),CurLine,File.c_str());
-      }
-
-      if (Parse->ParseLine(SrcList,C,CurLine,File) == false)
+      if (Parse->ParseLine(SrcList, C, CurLine, File) == false)
 	 return false;
    }
    return true;
diff --git a/apt-pkg/sourcelist.h b/apt-pkg/sourcelist.h
index b9e4389ed..e15314a5e 100644
--- a/apt-pkg/sourcelist.h
+++ b/apt-pkg/sourcelist.h
@@ -29,6 +29,7 @@
 
 #include <string>
 #include <vector>
+#include <map>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/metaindex.h>
 
@@ -57,9 +58,10 @@ class pkgSourceList
       bool FixupURI(string &URI) const;
       virtual bool ParseLine(vector<metaIndex *> &List,
 			     const char *Buffer,
-			     unsigned long CurLine,string File) const;
-      virtual bool CreateItem(vector<metaIndex *> &List,string URI,
-			      string Dist,string Section) const = 0;
+			     unsigned long const &CurLine,string const &File) const;
+      virtual bool CreateItem(vector<metaIndex *> &List,string const &URI,
+			      string const &Dist,string const &Section,
+			      std::map<string, string> const &Options) const = 0;
       Type();
       virtual ~Type() {};
    };
diff --git a/apt-pkg/srcrecords.cc b/apt-pkg/srcrecords.cc
index 5e40ae624..46a02b55c 100644
--- a/apt-pkg/srcrecords.cc
+++ b/apt-pkg/srcrecords.cc
@@ -77,7 +77,7 @@ bool pkgSrcRecords::Restart()
 /* This searches on both source package names and output binary names and
    returns the first found. A 'cursor' like system is used to allow this
    function to be called multiple times to get successive entries */
-pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool SrcOnly)
+pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool const &SrcOnly)
 {
    if (Current == Files.end())
       return 0;
@@ -116,7 +116,7 @@ pkgSrcRecords::Parser *pkgSrcRecords::Find(const char *Package,bool SrcOnly)
 // Parser::BuildDepType - Convert a build dep to a string		/*{{{*/
 // ---------------------------------------------------------------------
 /* */
-const char *pkgSrcRecords::Parser::BuildDepType(unsigned char Type)
+const char *pkgSrcRecords::Parser::BuildDepType(unsigned char const &Type)
 {
    const char *fields[] = {"Build-Depends", 
                            "Build-Depends-Indep",
diff --git a/apt-pkg/srcrecords.h b/apt-pkg/srcrecords.h
index 99cbc6060..a49533864 100644
--- a/apt-pkg/srcrecords.h
+++ b/apt-pkg/srcrecords.h
@@ -59,7 +59,7 @@ class pkgSrcRecords
       
       virtual bool Restart() = 0;
       virtual bool Step() = 0;
-      virtual bool Jump(unsigned long Off) = 0;
+      virtual bool Jump(unsigned long const &Off) = 0;
       virtual unsigned long Offset() = 0;
       virtual string AsStr() = 0;
       
@@ -69,8 +69,8 @@ class pkgSrcRecords
       virtual string Section() const = 0;
       virtual const char **Binaries() = 0;   // Ownership does not transfer
 
-      virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool ArchOnly) = 0;
-      static const char *BuildDepType(unsigned char Type);
+      virtual bool BuildDepends(vector<BuildDepRec> &BuildDeps, bool const &ArchOnly, bool const &StripMultiArch = true) = 0;
+      static const char *BuildDepType(unsigned char const &Type);
 
       virtual bool Files(vector<pkgSrcRecords::File> &F) = 0;
       
@@ -90,7 +90,7 @@ class pkgSrcRecords
    bool Restart();
 
    // Locate a package by name
-   Parser *Find(const char *Package,bool SrcOnly = false);
+   Parser *Find(const char *Package,bool const &SrcOnly = false);
    
    pkgSrcRecords(pkgSourceList &List);
    ~pkgSrcRecords();
diff --git a/apt-pkg/tagfile.cc b/apt-pkg/tagfile.cc
index 1c41f1265..96a681bec 100644
--- a/apt-pkg/tagfile.cc
+++ b/apt-pkg/tagfile.cc
@@ -193,17 +193,8 @@ bool pkgTagFile::Jump(pkgTagSection &Tag,unsigned long Offset)
 									/*}}}*/
 // TagSection::Scan - Scan for the end of the header information	/*{{{*/
 // ---------------------------------------------------------------------
-/* This looks for the first double new line in the data stream. It also
-   indexes the tags in the section. This very simple hash function for the
-   last 8 letters gives very good performance on the debian package files */
-inline static unsigned long AlphaHash(const char *Text, const char *End = 0)
-{
-   unsigned long Res = 0;
-   for (; Text != End && *Text != ':' && *Text != 0; Text++)
-      Res = ((unsigned long)(*Text) & 0xDF) ^ (Res << 1);
-   return Res & 0xFF;
-}
-
+/* This looks for the first double new line in the data stream.
+   It also indexes the tags in the section. */
 bool pkgTagSection::Scan(const char *Start,unsigned long MaxLength)
 {
    const char *End = Start + MaxLength;
@@ -374,6 +365,30 @@ signed int pkgTagSection::FindI(const char *Tag,signed long Default) const
    return Result;
 }
 									/*}}}*/
+// TagSection::FindULL - Find an unsigned long long integer		/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+unsigned long long pkgTagSection::FindULL(const char *Tag, unsigned long long const &Default) const
+{
+   const char *Start;
+   const char *Stop;
+   if (Find(Tag,Start,Stop) == false)
+      return Default;
+
+   // Copy it into a temp buffer so we can use strtoull
+   char S[100];
+   if ((unsigned)(Stop - Start) >= sizeof(S))
+      return Default;
+   strncpy(S,Start,Stop-Start);
+   S[Stop - Start] = 0;
+   
+   char *End;
+   unsigned long long Result = strtoull(S,&End,10);
+   if (S == End)
+      return Default;
+   return Result;
+}
+									/*}}}*/
 // TagSection::FindFlag - Locate a yes/no type flag			/*{{{*/
 // ---------------------------------------------------------------------
 /* The bits marked in Flag are masked on/off in Flags */
diff --git a/apt-pkg/tagfile.h b/apt-pkg/tagfile.h
index 321329a23..6891c1d81 100644
--- a/apt-pkg/tagfile.h
+++ b/apt-pkg/tagfile.h
@@ -33,7 +33,18 @@ class pkgTagSection
    unsigned int AlphaIndexes[0x100];
    
    unsigned int TagCount;
-     
+
+   /* This very simple hash function for the last 8 letters gives
+      very good performance on the debian package files */
+   inline static unsigned long AlphaHash(const char *Text, const char *End = 0)
+   {
+      unsigned long Res = 0;
+      for (; Text != End && *Text != ':' && *Text != 0; Text++)
+	 Res = ((unsigned long)(*Text) & 0xDF) ^ (Res << 1);
+      return Res & 0xFF;
+   }
+
+
    protected:
    const char *Stop;
 
@@ -46,6 +57,7 @@ class pkgTagSection
    bool Find(const char *Tag,unsigned &Pos) const;
    string FindS(const char *Tag) const;
    signed int FindI(const char *Tag,signed long Default = 0) const ;
+   unsigned long long FindULL(const char *Tag, unsigned long long const &Default = 0) const;
    bool FindFlag(const char *Tag,unsigned long &Flags,
 		 unsigned long Flag) const;
    bool Scan(const char *Start,unsigned long MaxLength);
@@ -54,6 +66,8 @@ class pkgTagSection
    virtual void TrimRecord(bool BeforeRecord, const char* &End);
    
    inline unsigned int Count() const {return TagCount;};
+   inline bool Exists(const char* const Tag) {return AlphaIndexes[AlphaHash(Tag)] != 0;}
+ 
    inline void Get(const char *&Start,const char *&Stop,unsigned int I) const
                    {Start = Section + Indexes[I]; Stop = Section + Indexes[I+1];}
 	    
diff --git a/apt-pkg/versionmatch.cc b/apt-pkg/versionmatch.cc
index b4d1d4696..093180f9b 100644
--- a/apt-pkg/versionmatch.cc
+++ b/apt-pkg/versionmatch.cc
@@ -18,6 +18,10 @@
 
 #include <stdio.h>
 #include <ctype.h>
+#include <fnmatch.h>
+#include <sys/types.h>
+#include <regex.h>
+
 									/*}}}*/
 
 // VersionMatch::pkgVersionMatch - Constructor				/*{{{*/
@@ -100,6 +104,8 @@ pkgVersionMatch::pkgVersionMatch(string Data,MatchType Type) : Type(Type)
 	    RelLabel = Fragments[J]+2;
 	 else if (stringcasecmp(Fragments[J],Fragments[J]+2,"c=") == 0)
 	    RelComponent = Fragments[J]+2;
+	 else if (stringcasecmp(Fragments[J],Fragments[J]+2,"b=") == 0)
+	    RelArchitecture = Fragments[J]+2;
       }
 
       if (RelVerStr.end()[-1] == '*')
@@ -149,6 +155,8 @@ pkgCache::VerIterator pkgVersionMatch::Find(pkgCache::PkgIterator Pkg)
       {
 	 if (MatchVer(Ver.VerStr(),VerStr,VerPrefixMatch) == true)
 	    return Ver;
+	 if (ExpressionMatches(VerStr, Ver.VerStr()) == true)
+	    return Ver;
 	 continue;
       }
       
@@ -160,6 +168,36 @@ pkgCache::VerIterator pkgVersionMatch::Find(pkgCache::PkgIterator Pkg)
    // This will be Ended by now.
    return Ver;
 }
+
+#ifndef FNM_CASEFOLD
+#define FNM_CASEFOLD 0
+#endif
+
+bool pkgVersionMatch::ExpressionMatches(const char *pattern, const char *string)
+{
+   if (pattern[0] == '/') {
+      bool res = false;
+      size_t length = strlen(pattern);
+      if (pattern[length - 1] == '/') {
+	 regex_t preg;
+	 char *regex = strdup(pattern + 1);
+	 regex[length - 2] = '\0';
+	 if (regcomp(&preg, regex, REG_EXTENDED | REG_ICASE) != 0) {
+	    _error->Warning("Invalid regular expression: %s", regex);
+	 } else if (regexec(&preg, string, 0, NULL, 0) == 0) {
+	    res = true;
+	 }
+	 free(regex);
+	 regfree(&preg);
+	 return res;
+      }
+   }
+   return fnmatch(pattern, string, FNM_CASEFOLD) == 0;
+}
+bool pkgVersionMatch::ExpressionMatches(const std::string& pattern, const char *string)
+{
+    return ExpressionMatches(pattern.c_str(), string);
+}
 									/*}}}*/
 // VersionMatch::FileMatch - Match against an index file		/*{{{*/
 // ---------------------------------------------------------------------
@@ -178,38 +216,42 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
       if (RelVerStr.empty() == true && RelOrigin.empty() == true &&
 	  RelArchive.empty() == true && RelLabel.empty() == true &&
 	  RelRelease.empty() == true && RelCodename.empty() == true &&
-	  RelComponent.empty() == true)
+	  RelComponent.empty() == true && RelArchitecture.empty() == true)
 	 return false;
 
       if (RelVerStr.empty() == false)
 	 if (File->Version == 0 ||
-	     MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false)
+	     (MatchVer(File.Version(),RelVerStr,RelVerPrefixMatch) == false &&
+	      ExpressionMatches(RelVerStr, File.Version()) == false))
 	    return false;
       if (RelOrigin.empty() == false)
-	 if (File->Origin == 0 ||
-	     stringcasecmp(RelOrigin,File.Origin()) != 0)
+	 if (File->Origin == 0 || !ExpressionMatches(RelOrigin,File.Origin()))
 	    return false;
       if (RelArchive.empty() == false)
 	 if (File->Archive == 0 ||
-	     stringcasecmp(RelArchive,File.Archive()) != 0)
+	     !ExpressionMatches(RelArchive,File.Archive()))
             return false;
       if (RelCodename.empty() == false)
 	 if (File->Codename == 0 ||
-	     stringcasecmp(RelCodename,File.Codename()) != 0)
+	     !ExpressionMatches(RelCodename,File.Codename()))
             return false;
       if (RelRelease.empty() == false)
 	 if ((File->Archive == 0 ||
-	     stringcasecmp(RelRelease,File.Archive()) != 0) &&
+	     !ExpressionMatches(RelRelease,File.Archive())) &&
              (File->Codename == 0 ||
-	      stringcasecmp(RelRelease,File.Codename()) != 0))
+	      !ExpressionMatches(RelRelease,File.Codename())))
 	       return false;
       if (RelLabel.empty() == false)
 	 if (File->Label == 0 ||
-	     stringcasecmp(RelLabel,File.Label()) != 0)
+	     !ExpressionMatches(RelLabel,File.Label()))
 	    return false;
       if (RelComponent.empty() == false)
 	 if (File->Component == 0 ||
-	     stringcasecmp(RelComponent,File.Component()) != 0)
+	     !ExpressionMatches(RelComponent,File.Component()))
+	    return false;
+      if (RelArchitecture.empty() == false)
+	 if (File->Architecture == 0 ||
+	     !ExpressionMatches(RelArchitecture,File.Architecture()))
 	    return false;
       return true;
    }
@@ -217,12 +259,12 @@ bool pkgVersionMatch::FileMatch(pkgCache::PkgFileIterator File)
    if (Type == Origin)
    {
       if (OrSite.empty() == false) {
-	 if (File->Site == 0 || OrSite != File.Site())
+	 if (File->Site == 0 || !ExpressionMatches(OrSite, File.Site()))
 	    return false;
       } else // so we are talking about file:// or status file
 	 if (strcmp(File.Site(),"") == 0 && File->Archive != 0) // skip the status file
 	    return false;
-      return (OrSite == File.Site());		/* both strings match */
+      return (ExpressionMatches(OrSite, File.Site())); /* both strings match */
    }
 
    return false;
diff --git a/apt-pkg/versionmatch.h b/apt-pkg/versionmatch.h
index a8f3c84ac..39639a23d 100644
--- a/apt-pkg/versionmatch.h
+++ b/apt-pkg/versionmatch.h
@@ -23,6 +23,7 @@
       Codename (n=) e.g. etch, lenny, squeeze, sid
       Label (l=)
       Component (c=)
+      Binary Architecture (b=)
    If there are no equals signs in the string then it is scanned in short
    form - if it starts with a number it is Version otherwise it is an
    Archive or a Codename.
@@ -55,6 +56,7 @@ class pkgVersionMatch
    string RelArchive;
    string RelLabel;
    string RelComponent;
+   string RelArchitecture;
    bool MatchAll;
    
    // Origin Matching
@@ -65,6 +67,8 @@ class pkgVersionMatch
    enum MatchType {None = 0,Version,Release,Origin} Type;
    
    bool MatchVer(const char *A,string B,bool Prefix);
+   bool ExpressionMatches(const char *pattern, const char *string);
+   bool ExpressionMatches(const std::string& pattern, const char *string);
    bool FileMatch(pkgCache::PkgFileIterator File);
    pkgCache::VerIterator Find(pkgCache::PkgIterator Pkg);