rename FORBID_NEW_INSTALL_PACKAGES to FORBID_INSTALL_NEW_PACKAGES

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

diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index 031fca5c0dda3930100d8f5d6706e709f552d41b..a06789cdfc0707554e23dbf5e158206b468be941 100644 (file)
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -346,23 +346,20 @@ 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 */
    /* 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() || Dep.IsNegative() == false)
+   if (Dep.IsIgnorable(Res) == false)

    {
       PkgIterator Pkg = Dep.TargetPkg();
       // Check the base package
       if (Type == NowVersion && Pkg->CurrentVer != 0)
    {
       PkgIterator Pkg = Dep.TargetPkg();
       // Check the base package
       if (Type == NowVersion && Pkg->CurrentVer != 0)

-        if (VS().CheckDep(Pkg.CurrentVer().VerStr(),Dep->CompareOp,
-                                Dep.TargetVer()) == true)
+        if (Dep.IsSatisfied(Pkg.CurrentVer()) == true)

            return true;
       
       if (Type == InstallVersion && PkgState[Pkg->ID].InstallVer != 0)
            return true;
       
       if (Type == InstallVersion && PkgState[Pkg->ID].InstallVer != 0)

-        if (VS().CheckDep(PkgState[Pkg->ID].InstVerIter(*this).VerStr(),
-                                Dep->CompareOp,Dep.TargetVer()) == true)
+        if (Dep.IsSatisfied(PkgState[Pkg->ID].InstVerIter(*this)) == true)

            return true;
       
       if (Type == CandidateVersion && PkgState[Pkg->ID].CandidateVer != 0)
            return true;
       
       if (Type == CandidateVersion && PkgState[Pkg->ID].CandidateVer != 0)

-        if (VS().CheckDep(PkgState[Pkg->ID].CandidateVerIter(*this).VerStr(),
-                                Dep->CompareOp,Dep.TargetVer()) == true)
+        if (Dep.IsSatisfied(PkgState[Pkg->ID].CandidateVerIter(*this)) == true)

            return true;
    }
    
            return true;
    }
    


@@ -371,14 +368,11 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
    
    // Check the providing packages
    PrvIterator P = Dep.TargetPkg().ProvidesList();
    
    // Check the providing packages
    PrvIterator P = Dep.TargetPkg().ProvidesList();

-   PkgIterator Pkg = Dep.ParentPkg();

    for (; P.end() != true; ++P)
    {
    for (; P.end() != true; ++P)
    {

-      /* 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.IsNegative() == true)
+      if (Dep.IsIgnorable(P) == true)

         continue;
         continue;

-      
+

       // Check if the provides is a hit
       if (Type == NowVersion)
       {
       // Check if the provides is a hit
       if (Type == NowVersion)
       {


@@ -401,7 +395,7 @@ bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
       }
       
       // Compare the versions.
       }
       
       // Compare the versions.

-      if (VS().CheckDep(P.ProvideVersion(),Dep->CompareOp,Dep.TargetVer()) == true)
+      if (Dep.IsSatisfied(P) == true)

       {
         Res = P.OwnerPkg();
         return true;
       {
         Res = P.OwnerPkg();
         return true;


@@ -870,6 +864,11 @@ bool pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
    dpkg holds are enforced by the private IsModeChangeOk */
 bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
                              unsigned long Depth, bool FromUser)
    dpkg holds are enforced by the private IsModeChangeOk */
 bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
                              unsigned long Depth, bool FromUser)

+{
+   return IsDeleteOkProtectInstallRequests(Pkg, rPurge, Depth, FromUser);
+}
+bool pkgDepCache::IsDeleteOkProtectInstallRequests(PkgIterator const &Pkg,
+      bool const rPurge, unsigned long const Depth, bool const FromUser)

 {
    if (FromUser == false && Pkg->CurrentVer == 0)
    {
 {
    if (FromUser == false && Pkg->CurrentVer == 0)
    {


@@ -897,6 +896,7 @@ char const* PrintMode(char const mode)
         case pkgDepCache::ModeInstall: return "Install";
         case pkgDepCache::ModeKeep: return "Keep";
         case pkgDepCache::ModeDelete: return "Delete";
         case pkgDepCache::ModeInstall: return "Install";
         case pkgDepCache::ModeKeep: return "Keep";
         case pkgDepCache::ModeDelete: return "Delete";

+        case pkgDepCache::ModeGarbage: return "Garbage";

         default: return "UNKNOWN";
         }
 }
         default: return "UNKNOWN";
         }
 }


@@ -916,11 +916,15 @@ bool pkgDepCache::IsModeChangeOk(ModeList const mode, PkgIterator const &Pkg,
       return true;
 
    StateCache &P = PkgState[Pkg->ID];
       return true;
 
    StateCache &P = PkgState[Pkg->ID];

+   // not changing the mode is obviously also fine as we might want to call
+   // e.g. MarkInstall multiple times with different arguments for the same package
+   if (P.Mode == mode)
+      return true;

 
    // if previous state was set by user only user can reset it
    if ((P.iFlags & Protected) == Protected)
    {
 
    // if previous state was set by user only user can reset it
    if ((P.iFlags & Protected) == Protected)
    {

-      if (unlikely(DebugMarker == true) && P.Mode != mode)
+      if (unlikely(DebugMarker == true))

         std::clog << OutputInDepth(Depth) << "Ignore Mark" << PrintMode(mode)
                   << " of " << Pkg << " as its mode (" << PrintMode(P.Mode)
                   << ") is protected" << std::endl;
         std::clog << OutputInDepth(Depth) << "Ignore Mark" << PrintMode(mode)
                   << " of " << Pkg << " as its mode (" << PrintMode(P.Mode)
                   << ") is protected" << std::endl;


@@ -930,7 +934,7 @@ bool pkgDepCache::IsModeChangeOk(ModeList const mode, PkgIterator const &Pkg,
    else if (mode != ModeKeep && Pkg->SelectedState == pkgCache::State::Hold &&
            _config->FindB("APT::Ignore-Hold",false) == false)
    {
    else if (mode != ModeKeep && Pkg->SelectedState == pkgCache::State::Hold &&
            _config->FindB("APT::Ignore-Hold",false) == false)
    {

-      if (unlikely(DebugMarker == true) && P.Mode != mode)
+      if (unlikely(DebugMarker == true))

         std::clog << OutputInDepth(Depth) << "Hold prevents Mark" << PrintMode(mode)
                   << " of " << Pkg << std::endl;
       return false;
         std::clog << OutputInDepth(Depth) << "Hold prevents Mark" << PrintMode(mode)
                   << " of " << Pkg << std::endl;
       return false;


@@ -950,6 +954,37 @@ struct CompareProviders {
    {
       pkgCache::PkgIterator const A = AV.ParentPkg();
       pkgCache::PkgIterator const B = BV.ParentPkg();
    {
       pkgCache::PkgIterator const A = AV.ParentPkg();
       pkgCache::PkgIterator const B = BV.ParentPkg();

+      // Prefer MA:same packages if other architectures for it are installed
+      if ((AV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same ||
+         (BV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+      {
+        bool instA = false;
+        if ((AV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+        {
+           pkgCache::GrpIterator Grp = A.Group();
+           for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
+              if (P->CurrentVer != 0)
+              {
+                 instA = true;
+                 break;
+              }
+        }
+        bool instB = false;
+        if ((BV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+        {
+           pkgCache::GrpIterator Grp = B.Group();
+           for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
+           {
+              if (P->CurrentVer != 0)
+              {
+                 instB = true;
+                 break;
+              }
+           }
+        }
+        if (instA != instB)
+           return instA == false;
+      }

       // Prefer packages in the same group as the target; e.g. foo:i386, foo:amd64
       if (A->Group != B->Group)
       {
       // Prefer packages in the same group as the target; e.g. foo:i386, foo:amd64
       if (A->Group != B->Group)
       {


@@ -966,9 +1001,13 @@ struct CompareProviders {
         else if ((B->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
            return true;
       }
         else if ((B->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
            return true;
       }

-      // higher priority seems like a good idea
-      if (AV->Priority != BV->Priority)
-        return AV->Priority < BV->Priority;
+      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;
+      }

       // prefer native architecture
       if (strcmp(A.Arch(), B.Arch()) != 0)
       {
       // prefer native architecture
       if (strcmp(A.Arch(), B.Arch()) != 0)
       {


@@ -983,6 +1022,9 @@ struct CompareProviders {
            else if (*a == B.Arch())
               return true;
       }
            else if (*a == B.Arch())
               return true;
       }

+      // higher priority seems like a good idea
+      if (AV->Priority != BV->Priority)
+        return AV->Priority > BV->Priority;

       // unable to decide…
       return A->ID < B->ID;
    }
       // unable to decide…
       return A->ID < B->ID;
    }


@@ -1011,9 +1053,10 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
       return true;
    }
 
       return true;
    }
 

-   // check if we are allowed to install the package
-   if (IsInstallOk(Pkg,AutoInst,Depth,FromUser) == false)
-      return false;
+   // check if we are allowed to install the package (if we haven't already)
+   if (P.Mode != ModeInstall || P.InstallVer != P.CandidateVer)
+      if (IsInstallOk(Pkg,AutoInst,Depth,FromUser) == false)
+        return false;

 
    ActionGroup group(*this);
    P.iFlags &= ~AutoKept;
 
    ActionGroup group(*this);
    P.iFlags &= ~AutoKept;


@@ -1148,59 +1191,58 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
       }
 
       /* This bit is for processing the possibilty of an install/upgrade
       }
 
       /* 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);
       {
         APT::VersionList verlist;
         pkgCache::VerIterator Cand = PkgState[Start.TargetPkg()->ID].CandidateVerIter(*this);

-        if (Cand.end() == false && VS().CheckDep(Cand.VerStr(), Start->CompareOp, Start.TargetVer()) == true)
+        if (Cand.end() == false && Start.IsSatisfied(Cand) == true)

            verlist.insert(Cand);
         for (PrvIterator Prv = Start.TargetPkg().ProvidesList(); Prv.end() != true; ++Prv)
         {
            pkgCache::VerIterator V = Prv.OwnerVer();
            pkgCache::VerIterator Cand = PkgState[Prv.OwnerPkg()->ID].CandidateVerIter(*this);
            verlist.insert(Cand);
         for (PrvIterator Prv = Start.TargetPkg().ProvidesList(); Prv.end() != true; ++Prv)
         {
            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)
+           if (Cand.end() == true || V != Cand || Start.IsSatisfied(Prv) == false)

               continue;
            verlist.insert(Cand);
         }
         CompareProviders comp(Start);
               continue;
            verlist.insert(Cand);
         }
         CompareProviders comp(Start);

-        APT::VersionList::iterator InstVer = std::max_element(verlist.begin(), verlist.end(), comp);

 
 

-        if (InstVer != verlist.end())
-        {
+        do {
+           APT::VersionList::iterator InstVer = std::max_element(verlist.begin(), verlist.end(), comp);
+
+           if (InstVer == verlist.end())
+              break;
+

            pkgCache::PkgIterator InstPkg = InstVer.ParentPkg();
            if(DebugAutoInstall == true)
               std::clog << OutputInDepth(Depth) << "Installing " << InstPkg.Name()
                         << " as " << Start.DepType() << " of " << Pkg.Name()
                         << std::endl;
            pkgCache::PkgIterator InstPkg = InstVer.ParentPkg();
            if(DebugAutoInstall == true)
               std::clog << OutputInDepth(Depth) << "Installing " << InstPkg.Name()
                         << " as " << Start.DepType() << " of " << Pkg.Name()
                         << std::endl;

-           // now check if we should consider it a automatic dependency or not
-           if(Pkg.Section() && ConfigValueInSubTree("APT::Never-MarkAuto-Sections", Pkg.Section()))
-           {
+           if (MarkInstall(InstPkg, true, Depth + 1, false, ForceImportantDeps) == false)
+           {
+              verlist.erase(InstVer);
+              continue;
+           }
+           // now check if we should consider it a automatic dependency or not
+           if(InstPkg->CurrentVer == 0 && Pkg->Section != 0 && ConfigValueInSubTree("APT::Never-MarkAuto-Sections", Pkg.Section()))
+           {

               if(DebugAutoInstall == true)
                  std::clog << OutputInDepth(Depth) << "Setting NOT as auto-installed (direct "
                             << Start.DepType() << " of pkg in APT::Never-MarkAuto-Sections)" << std::endl;
               if(DebugAutoInstall == true)
                  std::clog << OutputInDepth(Depth) << "Setting NOT as auto-installed (direct "
                             << Start.DepType() << " of pkg in APT::Never-MarkAuto-Sections)" << std::endl;

-              MarkInstall(InstPkg,true,Depth + 1, true);
-           }
-           else 
-           {
-              // mark automatic dependency
-              MarkInstall(InstPkg,true,Depth + 1, false, ForceImportantDeps);
-              // Set the autoflag, after MarkInstall because MarkInstall unsets it
-              if (InstPkg->CurrentVer == 0)
-                 PkgState[InstPkg->ID].Flags |= Flag::Auto;
-           }
-        }
+              MarkAuto(InstPkg, false);
+           }
+           break;
+        } while(true);

         continue;
       }
         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();
       {
         SPtrArray<Version *> List = Start.AllTargets();

+        pkgCache::PkgIterator TrgPkg = Start.TargetPkg();

         for (Version **I = List; *I != 0; I++)
         {
            VerIterator Ver(*this,*I);
         for (Version **I = List; *I != 0; I++)
         {
            VerIterator Ver(*this,*I);


@@ -1211,15 +1253,24 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            if (PkgState[Pkg->ID].InstallVer == 0)
               continue;
 
            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;
                MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps) == true)
               continue;

-           else if (MarkDelete(Pkg,false,Depth + 1, false) == false)
-              break;
+           else if (Start->Type == pkgCache::Dep::Conflicts || 
+                     Start->Type == pkgCache::Dep::DpkgBreaks) 
+            {
+               if(DebugAutoInstall == true)
+                  std::clog << OutputInDepth(Depth) 
+                            << " Removing: " << Pkg.Name()
+                            << std::endl;
+               if (MarkDelete(Pkg,false,Depth + 1, false) == false)
+                  break;
+            }

         }
         continue;
         }
         continue;

-      }      
+      }

    }
 
    return Dep.end() == true;
    }
 
    return Dep.end() == true;


@@ -1227,11 +1278,50 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
                                                                        /*}}}*/
 // DepCache::IsInstallOk - check if it is ok to install this package   /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
 // DepCache::IsInstallOk - check if it is ok to install this package   /*{{{*/
 // ---------------------------------------------------------------------

-/* The default implementation does nothing.
+/* The default implementation checks if the installation of an M-A:same
+   package would lead us into a version-screw and if so forbids it.

    dpkg holds are enforced by the private IsModeChangeOk */
 bool pkgDepCache::IsInstallOk(PkgIterator const &Pkg,bool AutoInst,
                              unsigned long Depth, bool FromUser)
 {
    dpkg holds are enforced by the private IsModeChangeOk */
 bool pkgDepCache::IsInstallOk(PkgIterator const &Pkg,bool AutoInst,
                              unsigned long Depth, bool FromUser)
 {

+   return IsInstallOkMultiArchSameVersionSynced(Pkg,AutoInst, Depth, FromUser);
+}
+bool pkgDepCache::IsInstallOkMultiArchSameVersionSynced(PkgIterator const &Pkg,
+      bool const AutoInst, unsigned long const Depth, bool const FromUser)
+{
+   if (FromUser == true) // as always: user is always right
+      return true;
+
+   // ignore packages with none-M-A:same candidates
+   VerIterator const CandVer = PkgState[Pkg->ID].CandidateVerIter(*this);
+   if (unlikely(CandVer.end() == true) || CandVer == Pkg.CurrentVer() ||
+        (CandVer->MultiArch & pkgCache::Version::Same) != pkgCache::Version::Same)
+      return true;
+
+   GrpIterator const Grp = Pkg.Group();
+   for (PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
+   {
+      // not installed or version synced: fine by definition
+      // (simple string-compare as stuff like '1' == '0:1-0' can't happen here)
+      if (P->CurrentVer == 0 || strcmp(Pkg.CandVersion(), P.CandVersion()) == 0)
+        continue;
+      // packages loosing M-A:same can be out-of-sync
+      VerIterator CV = PkgState[P->ID].CandidateVerIter(*this);
+      if (unlikely(CV.end() == true) ||
+           (CV->MultiArch & pkgCache::Version::Same) != pkgCache::Version::Same)
+        continue;
+
+      // not downloadable means the package is obsolete, so allow out-of-sync
+      if (CV.Downloadable() == false)
+        continue;
+
+      PkgState[Pkg->ID].iFlags |= AutoKept;
+      if (unlikely(DebugMarker == true))
+        std::clog << OutputInDepth(Depth) << "Ignore MarkInstall of " << Pkg
+           << " as its M-A:same siblings are not version-synced" << std::endl;
+      return false;
+   }
+

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -1243,19 +1333,36 @@ void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
    if (unlikely(Pkg.end() == true))
       return;
 
    if (unlikely(Pkg.end() == true))
       return;
 

+   APT::PackageList pkglist;
+   if (Pkg->CurrentVer != 0 &&
+       (Pkg.CurrentVer()-> MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+   {
+      pkgCache::GrpIterator Grp = Pkg.Group();
+      for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
+      {
+        if (P->CurrentVer != 0)
+           pkglist.insert(P);
+      }
+   }
+   else
+      pkglist.insert(Pkg);
+

    ActionGroup group(*this);
 
    ActionGroup group(*this);
 

-   RemoveSizes(Pkg);
-   RemoveStates(Pkg);
-   
-   StateCache &P = PkgState[Pkg->ID];
-   if (To == true)
-      P.iFlags |= ReInstall;
-   else
-      P.iFlags &= ~ReInstall;
-   
-   AddStates(Pkg);
-   AddSizes(Pkg);
+   for (APT::PackageList::const_iterator Pkg = pkglist.begin(); Pkg != pkglist.end(); ++Pkg)
+   {
+      RemoveSizes(Pkg);
+      RemoveStates(Pkg);
+
+      StateCache &P = PkgState[Pkg->ID];
+      if (To == true)
+        P.iFlags |= ReInstall;
+      else
+        P.iFlags &= ~ReInstall;
+
+      AddStates(Pkg);
+      AddSizes(Pkg);
+   }

 }
                                                                        /*}}}*/
 // DepCache::SetCandidateVersion - Change the candidate version                /*{{{*/
 }
                                                                        /*}}}*/
 // DepCache::SetCandidateVersion - Change the candidate version                /*{{{*/


@@ -1357,7 +1464,7 @@ bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
         if (Cand.end() == true)
            continue;
         // check if the current candidate is enough for the versioned dependency - and installable?
         if (Cand.end() == true)
            continue;
         // check if the current candidate is enough for the versioned dependency - and installable?

-        if (VS().CheckDep(P.CandVersion(), Start->CompareOp, Start.TargetVer()) == true &&
+        if (Start.IsSatisfied(Cand) == true &&

             (VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) == DepCandMin)
         {
            itsFine = true;
             (VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) == DepCandMin)
         {
            itsFine = true;


@@ -1391,7 +1498,7 @@ bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
            V = Match.Find(D.TargetPkg());
 
         // check if the version from this release could satisfy the dependency
            V = Match.Find(D.TargetPkg());
 
         // check if the version from this release could satisfy the dependency

-        if (V.end() == true || VS().CheckDep(V.VerStr(), D->CompareOp, D.TargetVer()) == false)
+        if (V.end() == true || D.IsSatisfied(V) == false)

         {
            if (stillOr == true)
               continue;
         {
            if (stillOr == true)
               continue;


@@ -1620,18 +1727,19 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
    follow_recommends = MarkFollowsRecommends();
    follow_suggests   = MarkFollowsSuggests();
 
    follow_recommends = MarkFollowsRecommends();
    follow_suggests   = MarkFollowsSuggests();
 

-
-

    // do the mark part, this is the core bit of the algorithm
    for(PkgIterator p = PkgBegin(); !p.end(); ++p)
    {
       if(!(PkgState[p->ID].Flags & Flag::Auto) ||
          (p->Flags & Flag::Essential) ||
    // do the mark part, this is the core bit of the algorithm
    for(PkgIterator p = PkgBegin(); !p.end(); ++p)
    {
       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
          (p.CurrentVer().end() != true &&
          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))
+          p.CurrentVer()->Priority == pkgCache::State::Required) ||
+         // packages which can't be changed (like holds) can't be garbage
+         (IsModeChangeOk(ModeGarbage, p, 0, false) == false))

       {
         // the package is installed (and set to keep)
         if(PkgState[p->ID].Keep() && !p.CurrentVer().end())
       {
         // the package is installed (and set to keep)
         if(PkgState[p->ID].Keep() && !p.CurrentVer().end())


@@ -1720,7 +1828,7 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
           for(VerIterator V = d.TargetPkg().VersionList(); 
               !V.end(); ++V)
           {
           for(VerIterator V = d.TargetPkg().VersionList(); 
               !V.end(); ++V)
           {

-             if(_system->VS->CheckDep(V.VerStr(), d->CompareOp, d.TargetVer()))
+             if(d.IsSatisfied(V))

              {
                if(debug_autoremove)
                  {
              {
                if(debug_autoremove)
                  {


@@ -1742,8 +1850,7 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
           for(PrvIterator prv=d.TargetPkg().ProvidesList(); 
               !prv.end(); ++prv)
           {
           for(PrvIterator prv=d.TargetPkg().ProvidesList(); 
               !prv.end(); ++prv)
           {

-             if(_system->VS->CheckDep(prv.ProvideVersion(), d->CompareOp, 
-                                      d.TargetVer()))
+             if(d.IsSatisfied(prv))

              {
                if(debug_autoremove)
                  {
              {
                if(debug_autoremove)
                  {