merged from donkult

[apt.git] / apt-pkg / depcache.cc

diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index 9449c73066e4f61996163f67ef94b1fa802c91ca..2656e9b42e745f3ca5a8b3fa982aee5ccce4f93f 100644 (file)
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -963,6 +963,13 @@ struct CompareProviders {
         else if ((B->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
            return true;
       }
+      if ((A->Flags & pkgCache::Flag::Important) != (B->Flags & pkgCache::Flag::Important))
+      {
+        if ((A->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+           return false;
+        else if ((B->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+           return true;
+      }
       // higher priority seems like a good idea
       if (AV->Priority != BV->Priority)
         return AV->Priority < BV->Priority;
@@ -1145,9 +1152,8 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
       }
 
       /* This bit is for processing the possibilty of an install/upgrade
-         fixing the problem */
-      if (Start->Type != Dep::DpkgBreaks &&
-         (DepState[Start->ID] & DepCVer) == DepCVer)
+         fixing the problem for "positive" dependencies */
+      if (Start.IsNegative() == false && (DepState[Start->ID] & DepCVer) == DepCVer)
       {
         APT::VersionList verlist;
         pkgCache::VerIterator Cand = PkgState[Start.TargetPkg()->ID].CandidateVerIter(*this);
@@ -1158,7 +1164,7 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            pkgCache::VerIterator V = Prv.OwnerVer();
            pkgCache::VerIterator Cand = PkgState[Prv.OwnerPkg()->ID].CandidateVerIter(*this);
            if (Cand.end() == true || V != Cand ||
-               VS().CheckDep(Cand.VerStr(), Start->CompareOp, Start.TargetVer()) == false)
+               VS().CheckDep(Prv.ProvideVersion(), Start->CompareOp, Start.TargetVer()) == false)
               continue;
            verlist.insert(Cand);
         }
@@ -1191,13 +1197,13 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
         }
         continue;
       }
-
-      /* For conflicts we just de-install the package and mark as auto,
-         Conflicts may not have or groups.  For dpkg's Breaks we try to
-         upgrade the package. */
-      if (Start.IsNegative() == true)
+      /* Negative dependencies have no or-group
+        If the dependency isn't versioned, we try if an upgrade might solve the problem.
+        Otherwise we remove the offender if needed */
+      else if (Start.IsNegative() == true && Start->Type != pkgCache::Dep::Obsoletes)
       {
         SPtrArray<Version *> List = Start.AllTargets();
+        pkgCache::PkgIterator TrgPkg = Start.TargetPkg();
         for (Version **I = List; *I != 0; I++)
         {
            VerIterator Ver(*this,*I);
@@ -1208,15 +1214,17 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            if (PkgState[Pkg->ID].InstallVer == 0)
               continue;
 
-           if (PkgState[Pkg->ID].CandidateVer != *I &&
-               Start->Type == Dep::DpkgBreaks &&
+           if ((Start->Version != 0 || TrgPkg != Pkg) &&
+               PkgState[Pkg->ID].CandidateVer != PkgState[Pkg->ID].InstallVer &&
+               PkgState[Pkg->ID].CandidateVer != *I &&
                MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps) == true)
               continue;
-           else if (MarkDelete(Pkg,false,Depth + 1, false) == false)
+           else if ((Start->Type == pkgCache::Dep::Conflicts || Start->Type == pkgCache::Dep::DpkgBreaks) &&
+                    MarkDelete(Pkg,false,Depth + 1, false) == false)
               break;
         }
         continue;
-      }      
+      }
    }
 
    return Dep.end() == true;
@@ -1641,6 +1649,7 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
    {
       if(!(PkgState[p->ID].Flags & Flag::Auto) ||
          (p->Flags & Flag::Essential) ||
+         (p->Flags & Flag::Important) ||
          userFunc.InRootSet(p) ||
          // be nice even then a required package violates the policy (#583517)
          // and do the full mark process also for required packages