1 files changed, 16 insertions, 1 deletions
diff --git a/apt-pkg/deb/dpkgpm.h b/apt-pkg/deb/dpkgpm.h
index 330c788a2..9a4478f7c 100644
--- a/apt-pkg/deb/dpkgpm.h
+++ b/apt-pkg/deb/dpkgpm.h
@@ -32,6 +32,21 @@ class pkgDPkgPM : public pkgPackageManager
    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:
 
    // progress reporting
@@ -68,7 +83,7 @@ class pkgDPkgPM : public pkgPackageManager
    // Helpers
    bool RunScriptsWithPkgs(const char *Cnf);
    bool SendV2Pkgs(FILE *F);
-   void WriteHistoryTag(string tag, string value);
+   void WriteHistoryTag(string const &tag, string value);
 
    // dpkg log
    bool OpenLog();