From 9d4c8f671af479cba90e1db2f68d9abf9daaa4a4 Mon Sep 17 00:00:00 2001
From: Arch Librarian <arch@canonical.com>
Date: Mon, 20 Sep 2004 16:54:34 +0000
Subject: Force-LoopBreak Author: jgg Date: 1999-08-12 05:59:47 GMT
 Force-LoopBreak

---
 apt-pkg/orderlist.h       |  6 +++---
 apt-pkg/packagemanager.cc | 13 ++++++++++++-
 2 files changed, 15 insertions(+), 4 deletions(-)

(limited to 'apt-pkg')

diff --git a/apt-pkg/orderlist.h b/apt-pkg/orderlist.h
index f15db4ce6..7e1b8efbc 100644
--- a/apt-pkg/orderlist.h
+++ b/apt-pkg/orderlist.h
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: orderlist.h,v 1.6 1999/08/03 05:19:41 jgg Exp $
+// $Id: orderlist.h,v 1.7 1999/08/12 05:59:54 jgg Exp $
 /* ######################################################################
 
    Order List - Represents and Manipulates an ordered list of packages.
@@ -88,7 +88,7 @@ class pkgOrderList
    enum Flags {Added = (1 << 0), AddPending = (1 << 1),
                Immediate = (1 << 2), Loop = (1 << 3),
                UnPacked = (1 << 4), Configured = (1 << 5),
-               Removed = (1 << 6),
+               Removed = (1 << 6),        // Early Remove
                InList = (1 << 7),
                States = (UnPacked | Configured | Removed)};
 
@@ -98,7 +98,7 @@ class pkgOrderList
    void Flag(PkgIterator Pkg,unsigned long State, unsigned long F) {Flags[Pkg->ID] = (Flags[Pkg->ID] & (~F)) | State;};
    inline void Flag(PkgIterator Pkg,unsigned long F) {Flags[Pkg->ID] |= F;};
    inline void Flag(Package *Pkg,unsigned long F) {Flags[Pkg->ID] |= F;};
-   inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & States) == 0;};
+   inline bool IsNow(PkgIterator Pkg) {return (Flags[Pkg->ID] & (States & (~Removed))) == 0;};
    bool IsMissing(PkgIterator Pkg);
    void WipeFlags(unsigned long F);
    void SetFileList(string *FileList) {this->FileList = FileList;};
diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
index 68827f53c..28a8d7fb2 100644
--- a/apt-pkg/packagemanager.cc
+++ b/apt-pkg/packagemanager.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description								/*{{{*/
-// $Id: packagemanager.cc,v 1.19 1999/08/03 05:19:41 jgg Exp $
+// $Id: packagemanager.cc,v 1.20 1999/08/12 05:59:54 jgg Exp $
 /* ######################################################################
 
    Package Manager - Abstacts the package manager
@@ -364,6 +364,17 @@ bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
    // Woops, it will not be re-installed!
    if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
       return false;
+
+   // Essential packages get special treatment
+   if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
+   {
+      if (_config->FindB("APT::Force-LoopBreak",false) == false)
+	 return _error->Error("This installation run will require temporarily "
+			      "removing the essential package %s due to a "
+			      "Conflicts/Pre-Depends loop. This is often bad, "
+			      "but if you really want to do it, activate the "
+			      "APT::Force-LoopBreak option.",Pkg.Name());
+   }
    
    bool Res = SmartRemove(Pkg);
    if (Cache[Pkg].Delete() == false)
-- 
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