provide a public interface for acquiring changelogs

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

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 2e4ca5c2c635c1717d17ff0018b7eec334de66e8..adbec82f71a9d2eddf72d0f1b65e11f5e2c11350 100644 (file)
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: algorithms.cc,v 1.4 1998/10/02 04:39:42 jgg Exp $
+// $Id: algorithms.cc,v 1.44 2002/11/28 18:49:16 jgg Exp $

 /* ######################################################################
 
    Algorithms - A set of misc algorithms
 /* ######################################################################
 
    Algorithms - A set of misc algorithms


@@ -14,25 +14,80 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/

-#ifdef __GNUG__
-#pragma implementation "apt-pkg/algorithms.h"
-#endif 
+#include <config.h>
+

 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>

-#include <iostream.h>
+#include <apt-pkg/sptr.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/packagemanager.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/cacheiterators.h>
+
+#include <string.h>
+#include <string>
+#include <cstdlib>
+#include <iostream>
+
+#include <apti18n.h>

                                                                        /*}}}*/
                                                                        /*}}}*/

+using namespace std;

 
 pkgProblemResolver *pkgProblemResolver::This = 0;
 
 // Simulate::Simulate - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 
 pkgProblemResolver *pkgProblemResolver::This = 0;
 
 // Simulate::Simulate - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------

-/* */
-pkgSimulate::pkgSimulate(pkgDepCache &Cache) : pkgPackageManager(Cache), 
-                            Sim(Cache)
+/* The legacy translations here of input Pkg iterators is obsolete, 
+   this is not necessary since the pkgCaches are fully shared now. */
+pkgSimulate::pkgSimulate(pkgDepCache *Cache) : pkgPackageManager(Cache),
+                           iPolicy(Cache),
+                           Sim(&Cache->GetCache(),&iPolicy),
+                           group(Sim)
+{
+   Sim.Init(0);
+   Flags = new unsigned char[Cache->Head().PackageCount];
+   memset(Flags,0,sizeof(*Flags)*Cache->Head().PackageCount);
+
+   // Fake a filename so as not to activate the media swapping
+   string Jnk = "SIMULATE";
+   for (unsigned int I = 0; I != Cache->Head().PackageCount; I++)
+      FileNames[I] = Jnk;
+}
+                                                                       /*}}}*/
+// Simulate::~Simulate - Destructor                                    /*{{{*/
+pkgSimulate::~pkgSimulate()
+{
+   delete[] Flags;
+}
+                                                                       /*}}}*/
+// Simulate::Describe - Describe a package                             /*{{{*/
+// ---------------------------------------------------------------------
+/* Parameter Current == true displays the current package version,
+   Parameter Candidate == true displays the candidate package version */
+void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Current,bool Candidate)

 {
 {

-   Flags = new unsigned char[Cache.HeaderP->PackageCount];
-   memset(Flags,0,sizeof(*Flags)*Cache.HeaderP->PackageCount);
+   VerIterator Ver(Sim);
+ 
+   out << Pkg.FullName(true);
+
+   if (Current == true)
+   {
+      Ver = Pkg.CurrentVer();
+      if (Ver.end() == false)
+         out << " [" << Ver.VerStr() << ']';
+   }
+
+   if (Candidate == true)
+   {
+      Ver = Sim[Pkg].CandidateVerIter(Sim);
+      if (Ver.end() == true)
+         return;
+   
+      out << " (" << Ver.VerStr() << ' ' << Ver.RelStr() << ')';
+   }

 }
                                                                        /*}}}*/
 // Simulate::Install - Simulate unpacking of a package                 /*{{{*/
 }
                                                                        /*}}}*/
 // Simulate::Install - Simulate unpacking of a package                 /*{{{*/


@@ -41,34 +96,41 @@ pkgSimulate::pkgSimulate(pkgDepCache &Cache) : pkgPackageManager(Cache),
 bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
 {
    // Adapt the iterator
 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;
    
    Flags[Pkg->ID] = 1;
    

-   clog << "Inst " << Pkg.Name();
+   cout << "Inst ";
+   Describe(Pkg,cout,true,true);

    Sim.MarkInstall(Pkg,false);
    Sim.MarkInstall(Pkg,false);

-   
+

    // Look for broken conflicts+predepends.
    // Look for broken conflicts+predepends.

-   for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
+   for (PkgIterator I = Sim.PkgBegin(); I.end() == false; ++I)

    {
       if (Sim[I].InstallVer == 0)
         continue;
       
    {
       if (Sim[I].InstallVer == 0)
         continue;
       

-      for (DepIterator D = Sim[I].InstVerIter(Sim).DependsList(); D.end() == false; D++)
-        if (D->Type == pkgCache::Dep::Conflicts || D->Type == pkgCache::Dep::PreDepends)
+      for (DepIterator D = Sim[I].InstVerIter(Sim).DependsList(); D.end() == false;)
+      {
+        DepIterator Start;
+        DepIterator End;
+        D.GlobOr(Start,End);
+        if (Start.IsNegative() == true ||
+            End->Type == pkgCache::Dep::PreDepends)

          {
          {

-           if ((Sim[D] & pkgDepCache::DepInstall) == 0)
+           if ((Sim[End] & pkgDepCache::DepGInstall) == 0)

            {
            {

-              clog << " [" << I.Name() << " on " << D.TargetPkg().Name() << ']';
-              if (D->Type == pkgCache::Dep::Conflicts)
-                 _error->Error("Fatal, conflicts violated %s",I.Name());
+              cout << " [" << I.FullName(false) << " on " << Start.TargetPkg().FullName(false) << ']';
+              if (Start->Type == pkgCache::Dep::Conflicts)
+                 _error->Error("Fatal, conflicts violated %s",I.FullName(false).c_str());

            }       
            }       

-        }      
+        }
+      }      

    }
 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else
    }
 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else

-      clog << endl;
+      cout << endl;

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


@@ -80,39 +142,46 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
 bool pkgSimulate::Configure(PkgIterator iPkg)
 {
    // Adapt the iterator
 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;
    
    Flags[Pkg->ID] = 2;

-//   Sim.MarkInstall(Pkg,false);
+

    if (Sim[Pkg].InstBroken() == true)
    {
    if (Sim[Pkg].InstBroken() == true)
    {

-      clog << "Conf " << Pkg.Name() << " broken" << endl;
+      cout << "Conf " << Pkg.FullName(false) << " broken" << endl;

 
       Sim.Update();
       
       // Print out each package and the failed dependencies
 
       Sim.Update();
       
       // Print out each package and the failed dependencies

-      for (pkgCache::DepIterator D = Sim[Pkg].InstVerIter(Sim).DependsList(); D.end() == false; D++)
+      for (pkgCache::DepIterator D = Sim[Pkg].InstVerIter(Sim).DependsList(); D.end() == false; ++D)

       {
         if (Sim.IsImportantDep(D) == false || 
             (Sim[D] & pkgDepCache::DepInstall) != 0)
            continue;
         
       {
         if (Sim.IsImportantDep(D) == false || 
             (Sim[D] & pkgDepCache::DepInstall) != 0)
            continue;
         

-        if (D->Type == pkgCache::Dep::Conflicts)
-           clog << " Conflicts:" << D.TargetPkg().Name();
+        if (D->Type == pkgCache::Dep::Obsoletes)
+           cout << " Obsoletes:" << D.TargetPkg().FullName(false);
+        else if (D->Type == pkgCache::Dep::Conflicts)
+           cout << " Conflicts:" << D.TargetPkg().FullName(false);
+        else if (D->Type == pkgCache::Dep::DpkgBreaks)
+           cout << " Breaks:" << D.TargetPkg().FullName(false);

         else
         else

-           clog << " Depends:" << D.TargetPkg().Name();
+           cout << " Depends:" << D.TargetPkg().FullName(false);

       }            
       }            

-      clog << endl;
+      cout << endl;

 
 

-      _error->Error("Conf Broken %s",Pkg.Name());
+      _error->Error("Conf Broken %s",Pkg.FullName(false).c_str());

    }   
    else
    }   
    else

-      clog << "Conf " <<  Pkg.Name();
+   {
+      cout << "Conf "; 
+      Describe(Pkg,cout,false,true);
+   }

 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else
 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else

-      clog << endl;
+      cout << endl;

    
    return true;
 }
    
    return true;
 }


@@ -120,19 +189,29 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
 // Simulate::Remove - Simulate the removal of a package                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Simulate::Remove - Simulate the removal of a package                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool pkgSimulate::Remove(PkgIterator iPkg)
+bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)

 {
    // Adapt the iterator
 {
    // Adapt the iterator

-   PkgIterator Pkg = Sim.FindPkg(iPkg.Name());
+   PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
+   if (Pkg.end() == true)
+   {
+      std::cerr << (Purge ? "Purg" : "Remv") << " invalid package " << iPkg.FullName() << std::endl;
+      return false;
+   }

 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);

-   clog << "Remv " << Pkg.Name();
+
+   if (Purge == true)
+      cout << "Purg ";
+   else
+      cout << "Remv ";
+   Describe(Pkg,cout,true,false);

 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else
 
    if (Sim.BrokenCount() != 0)
       ShortBreaks();
    else

-      clog << endl;
+      cout << endl;

 
    return true;
 }
 
    return true;
 }


@@ -142,18 +221,18 @@ bool pkgSimulate::Remove(PkgIterator iPkg)
 /* */
 void pkgSimulate::ShortBreaks()
 {
 /* */
 void pkgSimulate::ShortBreaks()
 {

-   clog << " [";
-   for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
+   cout << " [";
+   for (PkgIterator I = Sim.PkgBegin(); I.end() == false; ++I)

    {
       if (Sim[I].InstBroken() == true)
       {
         if (Flags[I->ID] == 0)
    {
       if (Sim[I].InstBroken() == true)
       {
         if (Flags[I->ID] == 0)

-           clog << I.Name() << ' ';
+           cout << I.FullName(false) << ' ';

 /*      else
 /*      else

-           clog << I.Name() << "! ";*/
+           cout << I.Name() << "! ";*/

       }      
    }
       }      
    }

-   clog << ']' << endl;
+   cout << ']' << endl;

 }
                                                                        /*}}}*/
 // ApplyStatus - Adjust for non-ok packages                            /*{{{*/
 }
                                                                        /*}}}*/
 // ApplyStatus - Adjust for non-ok packages                            /*{{{*/


@@ -163,25 +242,63 @@ void pkgSimulate::ShortBreaks()
    the necessary calculations to deal with the problems. */
 bool pkgApplyStatus(pkgDepCache &Cache)
 {
    the necessary calculations to deal with the problems. */
 bool pkgApplyStatus(pkgDepCache &Cache)
 {

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   pkgDepCache::ActionGroup group(Cache);
+
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

    {
    {

+      if (I->VersionList == 0)
+        continue;
+        
+      // Only choice for a ReInstReq package is to reinstall
+      if (I->InstState == pkgCache::State::ReInstReq ||
+         I->InstState == pkgCache::State::HoldReInstReq)
+      {
+        if (I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true)
+           Cache.MarkKeep(I, false, false);
+        else
+        {
+           // Is this right? Will dpkg choke on an upgrade?
+           if (Cache[I].CandidateVer != 0 &&
+                Cache[I].CandidateVerIter(Cache).Downloadable() == true)
+              Cache.MarkInstall(I, false, 0, false);
+           else
+              return _error->Error(_("The package %s needs to be reinstalled, "
+                                   "but I can't find an archive for it."),I.FullName(true).c_str());
+        }
+        
+        continue;
+      }
+      

       switch (I->CurrentState)
       {
       switch (I->CurrentState)
       {

-        // This means installation failed somehow
+        /* This means installation failed somehow - it does not need to be
+           re-unpacked (probably) */

         case pkgCache::State::UnPacked:
         case pkgCache::State::HalfConfigured:
         case pkgCache::State::UnPacked:
         case pkgCache::State::HalfConfigured:

-        Cache.MarkKeep(I);
+        case pkgCache::State::TriggersAwaited:
+        case pkgCache::State::TriggersPending:
+        if ((I->CurrentVer != 0 && I.CurrentVer().Downloadable() == true) ||
+            I.State() != pkgCache::PkgIterator::NeedsUnpack)
+           Cache.MarkKeep(I, false, false);
+        else
+        {
+           if (Cache[I].CandidateVer != 0 &&
+                Cache[I].CandidateVerIter(Cache).Downloadable() == true)
+              Cache.MarkInstall(I, true, 0, false);
+           else
+              Cache.MarkDelete(I, false, 0, false);
+        }

         break;
 
         // This means removal failed
         case pkgCache::State::HalfInstalled:
         break;
 
         // This means removal failed
         case pkgCache::State::HalfInstalled:

-        Cache.MarkDelete(I);
+        Cache.MarkDelete(I, false, 0, false);

         break;
         
         default:
         if (I->InstState != pkgCache::State::Ok)
            return _error->Error("The package %s is not ok and I "
         break;
         
         default:
         if (I->InstState != pkgCache::State::Ok)
            return _error->Error("The package %s is not ok and I "

-                                "don't know how to fix it!",I.Name());
+                                "don't know how to fix it!",I.FullName(false).c_str());

       }
    }
    return true;
       }
    }
    return true;


@@ -193,14 +310,16 @@ bool pkgApplyStatus(pkgDepCache &Cache)
    on the result. */
 bool pkgFixBroken(pkgDepCache &Cache)
 {
    on the result. */
 bool pkgFixBroken(pkgDepCache &Cache)
 {

+   pkgDepCache::ActionGroup group(Cache);
+

    // Auto upgrade all broken packages
    // Auto upgrade all broken packages

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

       if (Cache[I].NowBroken() == true)
       if (Cache[I].NowBroken() == true)

-        Cache.MarkInstall(I,true);
-
+        Cache.MarkInstall(I, true, 0, false);
+   

    /* Fix packages that are in a NeedArchive state but don't have a
       downloadable install version */
    /* Fix packages that are in a NeedArchive state but don't have a
       downloadable install version */

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

    {
       if (I.State() != pkgCache::PkgIterator::NeedsUnpack ||
          Cache[I].Delete() == true)
    {
       if (I.State() != pkgCache::PkgIterator::NeedsUnpack ||
          Cache[I].Delete() == true)


@@ -209,93 +328,21 @@ bool pkgFixBroken(pkgDepCache &Cache)
       if (Cache[I].InstVerIter(Cache).Downloadable() == false)
         continue;
 
       if (Cache[I].InstVerIter(Cache).Downloadable() == false)
         continue;
 

-      Cache.MarkInstall(I,true);
+      Cache.MarkInstall(I, true, 0, false);

    }
    
    }
    

-   pkgProblemResolver Fix(Cache);
+   pkgProblemResolver Fix(&Cache);

    return Fix.Resolve(true);
 }
                                                                        /*}}}*/
    return Fix.Resolve(true);
 }
                                                                        /*}}}*/

-// DistUpgrade - Distribution upgrade                                  /*{{{*/
-// ---------------------------------------------------------------------
-/* This autoinstalls every package and then force installs every 
-   pre-existing package. This creates the initial set of conditions which 
-   most likely contain problems because too many things were installed.
-   
-   The problem resolver is used to resolve the problems.
- */
-bool pkgDistUpgrade(pkgDepCache &Cache)
-{
-   /* Auto upgrade all installed packages, this provides the basis 
-      for the installation */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-      if (I->CurrentVer != 0)
-        Cache.MarkInstall(I,true);
-
-   /* Now, auto upgrade all essential packages - this ensures that
-      the essential packages are present and working */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
-        Cache.MarkInstall(I,true);
-   
-   /* We do it again over all previously installed packages to force 
-      conflict resolution on them all. */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-      if (I->CurrentVer != 0)
-        Cache.MarkInstall(I,false);
-
-   pkgProblemResolver Fix(Cache);
-   
-   // Hold back held packages.
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-   {
-      if (I->SelectedState == pkgCache::State::Hold)
-      {
-        Fix.Protect(I);
-        Cache.MarkKeep(I);
-      }
-   }
-   
-   return Fix.Resolve();
-}
-                                                                       /*}}}*/
-// AllUpgrade - Upgrade as many packages as possible                   /*{{{*/
-// ---------------------------------------------------------------------
-/* Right now the system must be consistent before this can be called.
-   It also will not change packages marked for install, it only tries
-   to install packages not marked for install */
-bool pkgAllUpgrade(pkgDepCache &Cache)
-{
-   pkgProblemResolver Fix(Cache);
-
-   if (Cache.BrokenCount() != 0)
-      return false;
-   
-   // Upgrade all installed packages
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-   {
-      if (Cache[I].Install() == true)
-        Fix.Protect(I);
-         
-      if (I->SelectedState == pkgCache::State::Hold)
-        continue;
-      
-      if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
-        Cache.MarkInstall(I,false);
-   }
-      
-   return Fix.ResolveByKeep();
-}
-                                                                       /*}}}*/
-

 // ProblemResolver::pkgProblemResolver - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ProblemResolver::pkgProblemResolver - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgProblemResolver::pkgProblemResolver(pkgDepCache &Cache) : Cache(Cache)
+pkgProblemResolver::pkgProblemResolver(pkgDepCache *pCache) : d(NULL), Cache(*pCache)

 {
    // Allocate memory
 {
    // Allocate memory

-   unsigned long Size = Cache.HeaderP->PackageCount;
-   Scores = new signed short[Size];
+   unsigned long Size = Cache.Head().PackageCount;
+   Scores = new int[Size];

    Flags = new unsigned char[Size];
    memset(Flags,0,sizeof(*Flags)*Size);
    
    Flags = new unsigned char[Size];
    memset(Flags,0,sizeof(*Flags)*Size);
    


@@ -303,6 +350,15 @@ pkgProblemResolver::pkgProblemResolver(pkgDepCache &Cache) : Cache(Cache)
    Debug = _config->FindB("Debug::pkgProblemResolver",false);
 }
                                                                        /*}}}*/
    Debug = _config->FindB("Debug::pkgProblemResolver",false);
 }
                                                                        /*}}}*/

+// ProblemResolver::~pkgProblemResolver - Destructor                   /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgProblemResolver::~pkgProblemResolver()
+{
+   delete [] Scores;
+   delete [] Flags;
+}
+                                                                       /*}}}*/

 // ProblemResolver::ScoreSort - Sort the list by score                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ProblemResolver::ScoreSort - Sort the list by score                 /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -322,77 +378,136 @@ int pkgProblemResolver::ScoreSort(const void *a,const void *b)
 /* */
 void pkgProblemResolver::MakeScores()
 {
 /* */
 void pkgProblemResolver::MakeScores()
 {

-   unsigned long Size = Cache.HeaderP->PackageCount;
+   unsigned long Size = Cache.Head().PackageCount;

    memset(Scores,0,sizeof(*Scores)*Size);
 
    memset(Scores,0,sizeof(*Scores)*Size);
 

+   // maps to pkgCache::State::VerPriority: 
+   //    Required Important Standard Optional Extra
+   int PrioMap[] = {
+      0,
+      _config->FindI("pkgProblemResolver::Scores::Required",3),
+      _config->FindI("pkgProblemResolver::Scores::Important",2),
+      _config->FindI("pkgProblemResolver::Scores::Standard",1),
+      _config->FindI("pkgProblemResolver::Scores::Optional",-1),
+      _config->FindI("pkgProblemResolver::Scores::Extra",-2)
+   };
+   int PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
+   int PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
+   int DepMap[] = {
+      0,
+      _config->FindI("pkgProblemResolver::Scores::Depends",1),
+      _config->FindI("pkgProblemResolver::Scores::PreDepends",1),
+      _config->FindI("pkgProblemResolver::Scores::Suggests",0),
+      _config->FindI("pkgProblemResolver::Scores::Recommends",1),
+      _config->FindI("pkgProblemResolver::Scores::Conflicts",-1),
+      _config->FindI("pkgProblemResolver::Scores::Replaces",0),
+      _config->FindI("pkgProblemResolver::Scores::Obsoletes",0),
+      _config->FindI("pkgProblemResolver::Scores::Breaks",-1),
+      _config->FindI("pkgProblemResolver::Scores::Enhances",0)
+   };
+   int AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
+   int AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
+
+   if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
+      clog << "Settings used to calculate pkgProblemResolver::Scores::" << endl
+         << "  Required => " << PrioMap[pkgCache::State::Required] << endl
+         << "  Important => " << PrioMap[pkgCache::State::Important] << endl
+         << "  Standard => " << PrioMap[pkgCache::State::Standard] << endl
+         << "  Optional => " << PrioMap[pkgCache::State::Optional] << endl
+         << "  Extra => " << PrioMap[pkgCache::State::Extra] << endl
+         << "  Essentials => " << PrioEssentials << endl
+         << "  InstalledAndNotObsolete => " << PrioInstalledAndNotObsolete << endl
+         << "  Pre-Depends => " << DepMap[pkgCache::Dep::PreDepends] << endl
+         << "  Depends => " << DepMap[pkgCache::Dep::Depends] << endl
+         << "  Recommends => " << DepMap[pkgCache::Dep::Recommends] << endl
+         << "  Suggests => " << DepMap[pkgCache::Dep::Suggests] << endl
+         << "  Conflicts => " << DepMap[pkgCache::Dep::Conflicts] << endl
+         << "  Breaks => " << DepMap[pkgCache::Dep::DpkgBreaks] << endl
+         << "  Replaces => " << DepMap[pkgCache::Dep::Replaces] << endl
+         << "  Obsoletes => " << DepMap[pkgCache::Dep::Obsoletes] << endl
+         << "  Enhances => " << DepMap[pkgCache::Dep::Enhances] << endl
+         << "  AddProtected => " << AddProtected << endl
+         << "  AddEssential => " << AddEssential << endl;
+

    // Generate the base scores for a package based on its properties
    // Generate the base scores for a package based on its properties

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

    {
       if (Cache[I].InstallVer == 0)
         continue;
       
    {
       if (Cache[I].InstallVer == 0)
         continue;
       

-      signed short &Score = Scores[I->ID];
+      int &Score = Scores[I->ID];

       
       

-      /* This is arbitary, it should be high enough to elevate an
+      /* This is arbitrary, it should be high enough to elevate an

          essantial package above most other packages but low enough
         to allow an obsolete essential packages to be removed by
          essantial package above most other packages but low enough
         to allow an obsolete essential packages to be removed by

-        a conflicts on a powerfull normal package (ie libc6) */
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
-        Score += 100;
-
-      // We transform the priority
-      // Important Required Standard Optional Extra
-      signed short PrioMap[] = {0,3,2,1,-1,-2};
-      if (Cache[I].InstVerIter(Cache)->Priority <= 5)
-        Score += PrioMap[Cache[I].InstVerIter(Cache)->Priority];
-      
+        a conflicts on a powerful normal package (ie libc6) */
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential
+         || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+        Score += PrioEssentials;
+
+      pkgCache::VerIterator const InstVer = Cache[I].InstVerIter(Cache);
+      // We apply priorities only to downloadable packages, all others are prio:extra
+      // as an obsolete prio:standard package can't be that standard anymore…
+      if (InstVer->Priority <= pkgCache::State::Extra && InstVer.Downloadable() == true)
+        Score += PrioMap[InstVer->Priority];
+      else
+        Score += PrioMap[pkgCache::State::Extra];
+

       /* This helps to fix oddball problems with conflicting packages
       /* This helps to fix oddball problems with conflicting packages

-         on the same level. We enhance the score of installed packages */
-      if (I->CurrentVer != 0)
-        Score += 1;
-   }
+        on the same level. We enhance the score of installed packages
+        if those are not obsolete */
+      if (I->CurrentVer != 0 && Cache[I].CandidateVer != 0 && Cache[I].CandidateVerIter(Cache).Downloadable())
+        Score += PrioInstalledAndNotObsolete;

 
 

-   // Now that we have the base scores we go and propogate dependencies
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
-   {
-      if (Cache[I].InstallVer == 0)
-        continue;
-      
-      for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false; D++)
+      // propagate score points along dependencies
+      for (pkgCache::DepIterator D = InstVer.DependsList(); D.end() == false; ++D)

       {
       {

-        if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
-           Scores[D.TargetPkg()->ID]++;
+        if (DepMap[D->Type] == 0)
+           continue;
+        pkgCache::PkgIterator const T = D.TargetPkg();
+        if (D->Version != 0)
+        {
+           pkgCache::VerIterator const IV = Cache[T].InstVerIter(Cache);
+           if (IV.end() == true || D.IsSatisfied(IV) == false)
+              continue;
+        }
+        Scores[T->ID] += DepMap[D->Type];

       }
       }

-   }   
-   
+   }
+

    // Copy the scores to advoid additive looping
    // Copy the scores to advoid additive looping

-   signed short *OldScores = new signed short[Size];
+   SPtrArray<int> OldScores = new int[Size];

    memcpy(OldScores,Scores,sizeof(*Scores)*Size);
       
    /* Now we cause 1 level of dependency inheritance, that is we add the 
       score of the packages that depend on the target Package. This 
       fortifies high scoring packages */
    memcpy(OldScores,Scores,sizeof(*Scores)*Size);
       
    /* Now we cause 1 level of dependency inheritance, that is we add the 
       score of the packages that depend on the target Package. This 
       fortifies high scoring packages */

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

    {
       if (Cache[I].InstallVer == 0)
         continue;
       
    {
       if (Cache[I].InstallVer == 0)
         continue;
       

-      for (pkgCache::DepIterator D = I.RevDependsList(); D.end() == false; D++)
+      for (pkgCache::DepIterator D = I.RevDependsList(); D.end() == false; ++D)

       {
         // Only do it for the install version
         if ((pkgCache::Version *)D.ParentVer() != Cache[D.ParentPkg()].InstallVer ||
       {
         // Only do it for the install version
         if ((pkgCache::Version *)D.ParentVer() != Cache[D.ParentPkg()].InstallVer ||

-            (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends))
+            (D->Type != pkgCache::Dep::Depends && 
+             D->Type != pkgCache::Dep::PreDepends &&
+             D->Type != pkgCache::Dep::Recommends))

            continue;    
         
            continue;    
         

-        Scores[I->ID] += abs(OldScores[D.ParentPkg()->ID]);
+        // Do not propagate negative scores otherwise
+        // an extra (-2) package might score better than an optional (-1)
+        if (OldScores[D.ParentPkg()->ID] > 0)
+            Scores[I->ID] += OldScores[D.ParentPkg()->ID];

       }      
    }
 
       }      
    }
 

-   /* Now we propogate along provides. This makes the packages that 
+   /* Now we propagate along provides. This makes the packages that

       provide important packages extremely important */
       provide important packages extremely important */

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

    {
    {

-      for (pkgCache::PrvIterator P = I.ProvidesList(); P.end() == false; P++)
+      for (pkgCache::PrvIterator P = I.ProvidesList(); P.end() == false; ++P)

       {
         // Only do it once per package
         if ((pkgCache::Version *)P.OwnerVer() != Cache[P.OwnerPkg()].InstallVer)
       {
         // Only do it once per package
         if ((pkgCache::Version *)P.OwnerVer() != Cache[P.OwnerPkg()].InstallVer)


@@ -403,11 +518,14 @@ void pkgProblemResolver::MakeScores()
 
    /* Protected things are pushed really high up. This number should put them
       ahead of everything */
 
    /* Protected things are pushed really high up. This number should put them
       ahead of everything */

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+   {

       if ((Flags[I->ID] & Protected) != 0)
       if ((Flags[I->ID] & Protected) != 0)

-        Scores[I->ID] += 10000;
-   
-   delete [] OldScores;
+        Scores[I->ID] += AddProtected;
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
+          (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+        Scores[I->ID] += AddEssential;
+   }

 }
                                                                        /*}}}*/
 // ProblemResolver::DoUpgrade - Attempt to upgrade this package                /*{{{*/
 }
                                                                        /*}}}*/
 // ProblemResolver::DoUpgrade - Attempt to upgrade this package                /*{{{*/


@@ -416,13 +534,17 @@ void pkgProblemResolver::MakeScores()
    installable */
 bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
 {
    installable */
 bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
 {

+   pkgDepCache::ActionGroup group(Cache);
+

    if ((Flags[Pkg->ID] & Upgradable) == 0 || Cache[Pkg].Upgradable() == false)
       return false;
    if ((Flags[Pkg->ID] & Upgradable) == 0 || Cache[Pkg].Upgradable() == false)
       return false;

+   if ((Flags[Pkg->ID] & Protected) == Protected)
+      return false;

    
    Flags[Pkg->ID] &= ~Upgradable;
    
    bool WasKept = Cache[Pkg].Keep();
    
    Flags[Pkg->ID] &= ~Upgradable;
    
    bool WasKept = Cache[Pkg].Keep();

-   Cache.MarkInstall(Pkg,false);
+   Cache.MarkInstall(Pkg, false, 0, false);

 
    // This must be a virtual package or something like that.
    if (Cache[Pkg].InstVerIter(Cache).end() == true)
 
    // This must be a virtual package or something like that.
    if (Cache[Pkg].InstVerIter(Cache).end() == true)


@@ -435,11 +557,10 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
       // Compute a single dependency element (glob or)
       pkgCache::DepIterator Start = D;
       pkgCache::DepIterator End = D;
       // Compute a single dependency element (glob or)
       pkgCache::DepIterator Start = D;
       pkgCache::DepIterator End = D;

-      unsigned char State = 0;
-      for (bool LastOR = true; D.end() == false && LastOR == true; D++)
+      for (bool LastOR = true; D.end() == false && LastOR == true;)

       {
       {

-        State |= Cache[D];

         LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
         LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;

+        ++D;

         if (LastOR == true)
            End = D;
       }
         if (LastOR == true)
            End = D;
       }


@@ -447,70 +568,93 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
       // We only worry about critical deps.
       if (End.IsCritical() != true)
         continue;
       // We only worry about critical deps.
       if (End.IsCritical() != true)
         continue;

-      
-      // Dep is ok
-      if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
-        continue;
-      
-      // Hm, the group is broken.. I have no idea how to handle this
-      if (Start != End)
-      {
-        clog << "Note, a broken or group was found in " << Pkg.Name() << "." << endl;
-        Fail = true;
-        break;
-      }
-
-      // Do not change protected packages
-      PkgIterator P = Start.SmartTargetPkg();
-      if ((Flags[P->ID] & Protected) == Protected)
-      {
-        if (Debug == true)
-           clog << "    Reinet Failed because of protected " << P.Name() << endl;
-        Fail = true;
-        break;
-      }      
-      
-      // Upgrade the package if the candidate version will fix the problem.
-      if ((Cache[Start] & pkgDepCache::DepCVer) == pkgDepCache::DepCVer)
+            
+      // Iterate over all the members in the or group
+      while (1)

       {
       {

-        if (DoUpgrade(P) == false)
+        // Dep is ok now
+        if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
+           break;
+        
+        // Do not change protected packages
+        PkgIterator P = Start.SmartTargetPkg();
+        if ((Flags[P->ID] & Protected) == Protected)

         {
            if (Debug == true)
         {
            if (Debug == true)

-              clog << "    Reinst Failed because of " << P.Name() << endl;
+              clog << "    Reinst Failed because of protected " << P.FullName(false) << endl;

            Fail = true;
            Fail = true;

+        }      
+        else
+        {
+           // Upgrade the package if the candidate version will fix the problem.
+           if ((Cache[Start] & pkgDepCache::DepCVer) == pkgDepCache::DepCVer)
+           {
+              if (DoUpgrade(P) == false)
+              {
+                 if (Debug == true)
+                    clog << "    Reinst Failed because of " << P.FullName(false) << endl;
+                 Fail = true;
+              }
+              else
+              {
+                 Fail = false;
+                 break;
+              }            
+           }
+           else
+           {
+              /* We let the algorithm deal with conflicts on its next iteration,
+               it is much smarter than us */
+              if (Start.IsNegative() == true)
+                  break;
+              
+              if (Debug == true)
+                 clog << "    Reinst Failed early because of " << Start.TargetPkg().FullName(false) << endl;
+              Fail = true;
+           }     
+        }
+        
+        if (Start == End)

            break;
            break;

-        }       
+        ++Start;

       }
       }

-      else
-      {
-        /* We let the algorithm deal with conflicts on its next iteration,
-           it is much smarter than us */
-        if (End->Type == pkgCache::Dep::Conflicts)
-           continue;
-        
-        if (Debug == true)
-           clog << "    Reinst Failed early because of " << Start.TargetPkg().Name() << endl;
-        Fail = true;
+      if (Fail == true)

         break;
         break;

-      }      

    }
    
    // Undo our operations - it might be smart to undo everything this did..
    if (Fail == true)
    {
       if (WasKept == true)
    }
    
    // Undo our operations - it might be smart to undo everything this did..
    if (Fail == true)
    {
       if (WasKept == true)

-        Cache.MarkKeep(Pkg);
+        Cache.MarkKeep(Pkg, false, false);

       else
       else

-        Cache.MarkDelete(Pkg);
+        Cache.MarkDelete(Pkg, false, 0, false);

       return false;
    }    
    
    if (Debug == true)
       return false;
    }    
    
    if (Debug == true)

-      clog << "  Re-Instated " << Pkg.Name() << endl;
+      clog << "  Re-Instated " << Pkg.FullName(false) << endl;

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

-// ProblemResolver::Resolve - Run the resolution pass                  /*{{{*/
+// ProblemResolver::Resolve - calls a resolver to fix the situation    /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+#if APT_PKG_ABI < 413
+bool pkgProblemResolver::Resolve(bool BrokenFix)
+{
+   return Resolve(BrokenFix, NULL);
+}
+#endif
+bool pkgProblemResolver::Resolve(bool BrokenFix, OpProgress * const Progress)
+{
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal")
+      return EDSP::ResolveExternal(solver.c_str(), Cache, false, false, false, Progress);
+   return ResolveInternal(BrokenFix);
+}
+                                                                       /*}}}*/
+// ProblemResolver::ResolveInternal - Run the resolution pass          /*{{{*/

 // ---------------------------------------------------------------------
 /* This routines works by calculating a score for each package. The score
    is derived by considering the package's priority and all reverse 
 // ---------------------------------------------------------------------
 /* This routines works by calculating a score for each package. The score
    is derived by considering the package's priority and all reverse 


@@ -518,22 +662,22 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
    adjusting the package will inflict. 
       
    It goes from highest score to lowest and corrects all of the breaks by 
    adjusting the package will inflict. 
       
    It goes from highest score to lowest and corrects all of the breaks by 

-   keeping or removing the dependant packages. If that fails then it removes
+   keeping or removing the dependent packages. If that fails then it removes

    the package itself and goes on. The routine should be able to intelligently
    go from any broken state to a fixed state. 
  
    The BrokenFix flag enables a mode where the algorithm tries to 
    upgrade packages to advoid problems. */
    the package itself and goes on. The routine should be able to intelligently
    go from any broken state to a fixed state. 
  
    The BrokenFix flag enables a mode where the algorithm tries to 
    upgrade packages to advoid problems. */

-bool pkgProblemResolver::Resolve(bool BrokenFix)
+bool pkgProblemResolver::ResolveInternal(bool const BrokenFix)

 {
 {

-   unsigned long Size = Cache.HeaderP->PackageCount;
+   pkgDepCache::ActionGroup group(Cache);

 
    // Record which packages are marked for install
    bool Again = false;
    do
    {
       Again = false;
 
    // Record which packages are marked for install
    bool Again = false;
    do
    {
       Again = false;

-      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

       {
         if (Cache[I].Install() == true)
            Flags[I->ID] |= PreInstalled;
       {
         if (Cache[I].Install() == true)
            Flags[I->ID] |= PreInstalled;


@@ -541,7 +685,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
         {
            if (Cache[I].InstBroken() == true && BrokenFix == true)
            {
         {
            if (Cache[I].InstBroken() == true && BrokenFix == true)
            {

-              Cache.MarkInstall(I,false);
+              Cache.MarkInstall(I, false, 0, false);

               if (Cache[I].Install() == true)
                  Again = true;
            }
               if (Cache[I].Install() == true)
                  Again = true;
            }


@@ -553,39 +697,48 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
    }
    while (Again == true);
 
    }
    while (Again == true);
 

-   if (Debug == true)
-      clog << "Starting" << endl;
+   if (Debug == true) {
+      clog << "Starting pkgProblemResolver with broken count: " 
+           << Cache.BrokenCount() << endl;
+   }

    
    MakeScores();
    
    MakeScores();

-   
+
+   unsigned long const Size = Cache.Head().PackageCount;
+

    /* We have to order the packages so that the broken fixing pass 
       operates from highest score to lowest. This prevents problems when
       high score packages cause the removal of lower score packages that
       would cause the removal of even lower score packages. */
    /* We have to order the packages so that the broken fixing pass 
       operates from highest score to lowest. This prevents problems when
       high score packages cause the removal of lower score packages that
       would cause the removal of even lower score packages. */

-   pkgCache::Package **PList = new pkgCache::Package *[Size];
+   SPtrArray<pkgCache::Package *> PList = new pkgCache::Package *[Size];

    pkgCache::Package **PEnd = PList;
    pkgCache::Package **PEnd = PList;

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

       *PEnd++ = I;
    This = this;
    qsort(PList,PEnd - PList,sizeof(*PList),&ScoreSort);
       *PEnd++ = I;
    This = this;
    qsort(PList,PEnd - PList,sizeof(*PList),&ScoreSort);

-   
-/* for (pkgCache::Package **K = PList; K != PEnd; K++)
-      if (Scores[(*K)->ID] != 0)
-      {
-        pkgCache::PkgIterator Pkg(Cache,*K);
-        clog << Scores[(*K)->ID] << ' ' << Pkg.Name() <<
-           ' ' << (pkgCache::Version *)Pkg.CurrentVer() << ' ' << 
-           Cache[Pkg].InstallVer << ' ' << Cache[Pkg].CandidateVer << endl;
-      } */

 
 

-   if (Debug == true)
-      clog << "Starting 2" << endl;
-   
+   if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
+   {
+      clog << "Show Scores" << endl;
+      for (pkgCache::Package **K = PList; K != PEnd; K++)
+         if (Scores[(*K)->ID] != 0)
+         {
+           pkgCache::PkgIterator Pkg(Cache,*K);
+           clog << Scores[(*K)->ID] << ' ' << Pkg << std::endl;
+         }
+   }
+
+   if (Debug == true) {
+      clog << "Starting 2 pkgProblemResolver with broken count: " 
+           << Cache.BrokenCount() << endl;
+   }
+

    /* Now consider all broken packages. For each broken package we either
       remove the package or fix it's problem. We do this once, it should
       not be possible for a loop to form (that is a < b < c and fixing b by
       changing a breaks c) */
    bool Change = true;
    /* Now consider all broken packages. For each broken package we either
       remove the package or fix it's problem. We do this once, it should
       not be possible for a loop to form (that is a < b < c and fixing b by
       changing a breaks c) */
    bool Change = true;

+   bool const TryFixByInstall = _config->FindB("pkgProblemResolver::FixByInstall", true);

    for (int Counter = 0; Counter != 10 && Change == true; Counter++)
    {
       Change = false;
    for (int Counter = 0; Counter != 10 && Change == true; Counter++)
    {
       Change = false;


@@ -602,197 +755,420 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
             (Flags[I->ID] & ReInstateTried) == 0)
         {
            if (Debug == true)
             (Flags[I->ID] & ReInstateTried) == 0)
         {
            if (Debug == true)

-              clog << " Try to Re-Instate " << I.Name() << endl;
-           int OldBreaks = Cache.BrokenCount();
+              clog << " Try to Re-Instate (" << Counter << ") " << I.FullName(false) << endl;
+           unsigned long OldBreaks = Cache.BrokenCount();

            pkgCache::Version *OldVer = Cache[I].InstallVer;
            Flags[I->ID] &= ReInstateTried;
            
            pkgCache::Version *OldVer = Cache[I].InstallVer;
            Flags[I->ID] &= ReInstateTried;
            

-           Cache.MarkInstall(I,false);
+           Cache.MarkInstall(I, false, 0, false);

            if (Cache[I].InstBroken() == true || 
                OldBreaks < Cache.BrokenCount())
            {
               if (OldVer == 0)
            if (Cache[I].InstBroken() == true || 
                OldBreaks < Cache.BrokenCount())
            {
               if (OldVer == 0)

-                 Cache.MarkDelete(I);
+                 Cache.MarkDelete(I, false, 0, false);

               else
               else

-                 Cache.MarkKeep(I);
+                 Cache.MarkKeep(I, false, false);

            }       
            else
               if (Debug == true)
            }       
            else
               if (Debug == true)

-                 clog << "Re-Instated " << I.Name() << " (" << OldBreaks << " vs " << Cache.BrokenCount() << ')' << endl;
+                 clog << "Re-Instated " << I.FullName(false) << " (" << OldBreaks << " vs " << Cache.BrokenCount() << ')' << endl;

         }
            
         if (Cache[I].InstallVer == 0 || Cache[I].InstBroken() == false)
            continue;
         
         }
            
         if (Cache[I].InstallVer == 0 || Cache[I].InstBroken() == false)
            continue;
         

+        if (Debug == true)
+           clog << "Investigating (" << Counter << ") " << I << endl;
+        

         // Isolate the problem dependency
         PackageKill KillList[100];
         PackageKill *LEnd = KillList;
         // Isolate the problem dependency
         PackageKill KillList[100];
         PackageKill *LEnd = KillList;

-        for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false;)
+        bool InOr = false;
+        pkgCache::DepIterator Start;
+        pkgCache::DepIterator End;
+        PackageKill *OldEnd = LEnd;
+        
+        enum {OrRemove,OrKeep} OrOp = OrRemove;
+        for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList();
+             D.end() == false || InOr == true;)

         {
            // Compute a single dependency element (glob or)
         {
            // Compute a single dependency element (glob or)

-           pkgCache::DepIterator Start = D;
-           pkgCache::DepIterator End = D;
-           unsigned char State = 0;
-           for (bool LastOR = true; D.end() == false && LastOR == true; D++)
+           if (Start == End)

            {
            {

-              State |= Cache[D];
-              LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
-              if (LastOR == true)
-                 End = D;
+              // Decide what to do
+              if (InOr == true && OldEnd == LEnd)
+              {
+                 if (OrOp == OrRemove)
+                 {
+                    if ((Flags[I->ID] & Protected) != Protected)
+                    {
+                       if (Debug == true)
+                          clog << "  Or group remove for " << I.FullName(false) << endl;
+                       Cache.MarkDelete(I, false, 0, false);
+                       Change = true;
+                    }
+                 }
+                 else if (OrOp == OrKeep)
+                 {
+                    if (Debug == true)
+                       clog << "  Or group keep for " << I.FullName(false) << endl;
+                    Cache.MarkKeep(I, false, false);
+                    Change = true;
+                 }
+              }
+              
+              /* We do an extra loop (as above) to finalize the or group
+                 processing */
+              InOr = false;
+              OrOp = OrRemove;
+              D.GlobOr(Start,End);
+              if (Start.end() == true)
+                 break;
+
+              // We only worry about critical deps.
+              if (End.IsCritical() != true)
+                 continue;
+
+              InOr = Start != End;
+              OldEnd = LEnd;

            }
            }

-           
-           // We only worry about critical deps.
-           if (End.IsCritical() != true)
-              continue;
-           
+           else
+            {
+              ++Start;
+              // We only worry about critical deps.
+              if (Start.IsCritical() != true)
+                  continue;
+            }
+

            // Dep is ok
            if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
            // Dep is ok
            if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)

+           {
+              InOr = false;

               continue;
               continue;

+           }

            
            

-           // Hm, the group is broken.. I have no idea how to handle this
-           if (Start != End)
-           {
-              clog << "Note, a broken or group was found in " << I.Name() << "." << endl;
-              Cache.MarkDelete(I);
+           if (Debug == true)
+              clog << "Broken " << Start << endl;
+
+           /* Look across the version list. If there are no possible
+              targets then we keep the package and bail. This is necessary
+              if a package has a dep on another package that can't be found */
+           SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
+           if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
+               Start.IsNegative() == false &&
+               Cache[I].NowBroken() == false)
+           {          
+              if (InOr == true)
+              {
+                 /* No keep choice because the keep being OK could be the
+                    result of another element in the OR group! */
+                 continue;
+              }
+              
+              Change = true;
+              Cache.MarkKeep(I, false, false);

               break;
            }
               break;
            }

-                   
-           if (Debug == true)
-              clog << "Package " << I.Name() << " has broken dep on " << End.TargetPkg().Name() << endl;

            
            

-           /* Conflicts is simple, decide if we should remove this package
-              or the conflicted one */
-           pkgCache::Version **VList = End.AllTargets();

            bool Done = false;
            for (pkgCache::Version **V = VList; *V != 0; V++)
            {
               pkgCache::VerIterator Ver(Cache,*V);
               pkgCache::PkgIterator Pkg = Ver.ParentPkg();
            bool Done = false;
            for (pkgCache::Version **V = VList; *V != 0; V++)
            {
               pkgCache::VerIterator Ver(Cache,*V);
               pkgCache::PkgIterator Pkg = Ver.ParentPkg();

-           
+
+               /* This is a conflicts, and the version we are looking
+                  at is not the currently selected version of the 
+                  package, which means it is not necessary to 
+                  remove/keep */
+               if (Cache[Pkg].InstallVer != Ver && Start.IsNegative() == true)
+               {
+                  if (Debug) 
+                     clog << "  Conflicts//Breaks against version " 
+                          << Ver.VerStr() << " for " << Pkg.Name() 
+                          << " but that is not InstVer, ignoring"
+                          << endl;
+                  continue;
+               }
+

               if (Debug == true)
               if (Debug == true)

-                 clog << "  Considering " << Pkg.Name() << ' ' << (int)Scores[Pkg->ID] << 
-                 " as a solution to " << I.Name() << ' ' << (int)Scores[I->ID] << endl;
+                 clog << "  Considering " << Pkg.FullName(false) << ' ' << Scores[Pkg->ID] <<
+                 " as a solution to " << I.FullName(false) << ' ' << Scores[I->ID] << endl;
+
+              /* Try to fix the package under consideration rather than
+                 fiddle with the VList package */

               if (Scores[I->ID] <= Scores[Pkg->ID] ||
               if (Scores[I->ID] <= Scores[Pkg->ID] ||

-                  ((Cache[End] & pkgDepCache::DepGNow) == 0 &&
-                   End->Type != pkgCache::Dep::Conflicts))
+                  ((Cache[Start] & pkgDepCache::DepNow) == 0 &&
+                   End.IsNegative() == false))

               {
               {

-                 if ((Flags[I->ID] & Protected) != 0)
+                 // Try a little harder to fix protected packages..
+                 if ((Flags[I->ID] & Protected) == Protected)
+                 {
+                    if (DoUpgrade(Pkg) == true)
+                    {
+                       if (Scores[Pkg->ID] > Scores[I->ID])
+                          Scores[Pkg->ID] = Scores[I->ID];
+                       break;
+                    }
+                    

                     continue;
                     continue;

-
-                 // See if a keep will do
-                 Cache.MarkKeep(I);
+                 }
+                 
+                 /* See if a keep will do, unless the package is protected,
+                    then installing it will be necessary */
+                 bool Installed = Cache[I].Install();
+                 Cache.MarkKeep(I, false, false);

                  if (Cache[I].InstBroken() == false)
                  {
                  if (Cache[I].InstBroken() == false)
                  {

+                    // Unwind operation will be keep now
+                    if (OrOp == OrRemove)
+                       OrOp = OrKeep;
+                    
+                    // Restore
+                    if (InOr == true && Installed == true)
+                       Cache.MarkInstall(I, false, 0, false);
+                    

                     if (Debug == true)
                     if (Debug == true)

-                       clog << "  Holding Back " << I.Name() << " rather than change " << End.TargetPkg().Name() << endl;
+                       clog << "  Holding Back " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;

                  }               
                  else
                  }               
                  else

-                 {
+                 {                  

                     if (BrokenFix == false || DoUpgrade(I) == false)
                     {
                     if (BrokenFix == false || DoUpgrade(I) == false)
                     {

-                       if (Debug == true)
-                          clog << "  Removing " << I.Name() << " rather than change " << End.TargetPkg().Name() << endl;
-                       Cache.MarkDelete(I);
-                       if (Counter > 1)
-                          Scores[I->ID] = Scores[Pkg->ID];
+                       // Consider other options
+                       if (InOr == false || Cache[I].Garbage == true)
+                       {
+                          if (Debug == true)
+                             clog << "  Removing " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;
+                          Cache.MarkDelete(I, false, 0, false);
+                          if (Counter > 1 && Scores[Pkg->ID] > Scores[I->ID])
+                             Scores[I->ID] = Scores[Pkg->ID];
+                       }
+                       else if (TryFixByInstall == true &&
+                                Start.TargetPkg()->CurrentVer == 0 &&
+                                Cache[Start.TargetPkg()].Delete() == false &&
+                                (Flags[Start.TargetPkg()->ID] & ToRemove) != ToRemove &&
+                                Cache.GetCandidateVer(Start.TargetPkg()).end() == false)
+                       {
+                          /* Before removing or keeping the package with the broken dependency
+                             try instead to install the first not previously installed package
+                             solving this dependency. This helps every time a previous solver
+                             is removed by the resolver because of a conflict or alike but it is
+                             dangerous as it could trigger new breaks/conflicts… */
+                          if (Debug == true)
+                             clog << "  Try Installing " << Start.TargetPkg() << " before changing " << I.FullName(false) << std::endl;
+                          unsigned long const OldBroken = Cache.BrokenCount();
+                          Cache.MarkInstall(Start.TargetPkg(), true, 1, false);
+                          // FIXME: we should undo the complete MarkInstall process here
+                          if (Cache[Start.TargetPkg()].InstBroken() == true || Cache.BrokenCount() > OldBroken)
+                             Cache.MarkDelete(Start.TargetPkg(), false, 1, false);
+                       }

                     }
                  }
                     }
                  }

-
+                                 

                  Change = true;
                  Done = true;
                  break;
               }
               else
               {
                  Change = true;
                  Done = true;
                  break;
               }
               else
               {

-                 // Skip this if it is protected
+                 if (Start->Type == pkgCache::Dep::DpkgBreaks)
+                 {
+                    // first, try upgradring the package, if that
+                    // does not help, the breaks goes onto the
+                    // kill list
+                     //
+                    // FIXME: use DoUpgrade(Pkg) instead?
+                    if (Cache[End] & pkgDepCache::DepGCVer)
+                    {
+                       if (Debug)
+                          clog << "  Upgrading " << Pkg.FullName(false) << " due to Breaks field in " << I.FullName(false) << endl;
+                       Cache.MarkInstall(Pkg, false, 0, false);
+                       continue;
+                    }
+                 }
+
+                 // Skip adding to the kill list if it is protected

                  if ((Flags[Pkg->ID] & Protected) != 0)
                     continue;
                  if ((Flags[Pkg->ID] & Protected) != 0)
                     continue;

+               
+                 if (Debug == true)
+                    clog << "  Added " << Pkg.FullName(false) << " to the remove list" << endl;

                  
                  LEnd->Pkg = Pkg;
                  LEnd->Dep = End;
                  LEnd++;
                  
                  
                  LEnd->Pkg = Pkg;
                  LEnd->Dep = End;
                  LEnd++;
                  

-                 if (End->Type != pkgCache::Dep::Conflicts)
+                 if (Start.IsNegative() == false)

                     break;
               }
            }
 
            // Hm, nothing can possibly satisify this dep. Nuke it.
                     break;
               }
            }
 
            // Hm, nothing can possibly satisify this dep. Nuke it.

-           if (VList[0] == 0 && End->Type != pkgCache::Dep::Conflicts)
+           if (VList[0] == 0 &&
+               Start.IsNegative() == false &&
+               (Flags[I->ID] & Protected) != Protected)

            {
            {

+              bool Installed = Cache[I].Install();

               Cache.MarkKeep(I);
               if (Cache[I].InstBroken() == false)
               {
               Cache.MarkKeep(I);
               if (Cache[I].InstBroken() == false)
               {

+                 // Unwind operation will be keep now
+                 if (OrOp == OrRemove)
+                    OrOp = OrKeep;
+                 
+                 // Restore
+                 if (InOr == true && Installed == true)
+                    Cache.MarkInstall(I, false, 0, false);
+                 

                  if (Debug == true)
                  if (Debug == true)

-                    clog << "  Holding Back " << I.Name() << " because I can't find " << End.TargetPkg().Name() << endl;
+                    clog << "  Holding Back " << I.FullName(false) << " because I can't find " << Start.TargetPkg().FullName(false) << endl;

               }               
               else
               {
                  if (Debug == true)
               }               
               else
               {
                  if (Debug == true)

-                    clog << "  Removing " << I.Name() << " because I can't find " << End.TargetPkg().Name() << endl;
-                 Cache.MarkDelete(I);
+                    clog << "  Removing " << I.FullName(false) << " because I can't find " << Start.TargetPkg().FullName(false) << endl;
+                 if (InOr == false)
+                    Cache.MarkDelete(I, false, 0, false);

               }
 
               Change = true;
               Done = true;
            }
            
               }
 
               Change = true;
               Done = true;
            }
            

-           delete [] VList;
+           // Try some more
+           if (InOr == true)
+              continue;
+           

            if (Done == true)
               break;
         }
         
         // Apply the kill list now
         if (Cache[I].InstallVer != 0)
            if (Done == true)
               break;
         }
         
         // Apply the kill list now
         if (Cache[I].InstallVer != 0)

+        {

            for (PackageKill *J = KillList; J != LEnd; J++)
            for (PackageKill *J = KillList; J != LEnd; J++)

-         {
-           Change = true;
-           if ((Cache[J->Dep] & pkgDepCache::DepGNow) == 0)

            {
            {

-              if (J->Dep->Type == pkgCache::Dep::Conflicts)
+              Change = true;
+              if ((Cache[J->Dep] & pkgDepCache::DepGNow) == 0)
+              {
+                 if (J->Dep.IsNegative() == true)
+                 {
+                    if (Debug == true)
+                       clog << "  Fixing " << I.FullName(false) << " via remove of " << J->Pkg.FullName(false) << endl;
+                    Cache.MarkDelete(J->Pkg, false, 0, false);
+                 }
+              }
+              else

               {
                  if (Debug == true)
               {
                  if (Debug == true)

-                    clog << "  Fixing " << I.Name() << " via remove of " << J->Pkg.Name() << endl;
-                 Cache.MarkDelete(J->Pkg);
+                    clog << "  Fixing " << I.FullName(false) << " via keep of " << J->Pkg.FullName(false) << endl;
+                 Cache.MarkKeep(J->Pkg, false, false);

               }
               }

-           }
-           else
-           {
-              if (Debug == true)
-                 clog << "  Fixing " << I.Name() << " via keep of " << J->Pkg.Name() << endl;
-              Cache.MarkKeep(J->Pkg);
-           }
-           
-           if (Counter > 1)
-              Scores[J->Pkg->ID] = Scores[I->ID];
-        }      
-      }
+
+              if (Counter > 1)
+              {
+                 if (Scores[I->ID] > Scores[J->Pkg->ID])                 
+                    Scores[J->Pkg->ID] = Scores[I->ID];
+              }               
+           }      
+        }
+      }      

    }
 
    if (Debug == true)
       clog << "Done" << endl;
    }
 
    if (Debug == true)
       clog << "Done" << endl;

-   
-   delete [] Scores;
-   delete [] PList;
-   
+      

    if (Cache.BrokenCount() != 0)
    if (Cache.BrokenCount() != 0)

-      return _error->Error("Internal error, pkgProblemResolver::Resolve generated breaks.");
+   {
+      // See if this is the result of a hold
+      pkgCache::PkgIterator I = Cache.PkgBegin();
+      for (;I.end() != true; ++I)
+      {
+        if (Cache[I].InstBroken() == false)
+           continue;
+        if ((Flags[I->ID] & Protected) != Protected)
+           return _error->Error(_("Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages."));
+      }
+      return _error->Error(_("Unable to correct problems, you have held broken packages."));
+   }
+   
+   // set the auto-flags (mvo: I'm not sure if we _really_ need this)
+   pkgCache::PkgIterator I = Cache.PkgBegin();
+   for (;I.end() != true; ++I) {
+      if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) {
+        if(_config->FindI("Debug::pkgAutoRemove",false)) {
+           std::clog << "Resolve installed new pkg: " << I.FullName(false) 
+                     << " (now marking it as auto)" << std::endl;
+        }
+        Cache[I].Flags |= pkgCache::Flag::Auto;
+      }
+   }
+

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

+// ProblemResolver::BreaksInstOrPolicy - Check if the given pkg is broken/*{{{*/
+// ---------------------------------------------------------------------
+/* This checks if the given package is broken either by a hard dependency
+   (InstBroken()) or by introducing a new policy breakage e.g. new
+   unsatisfied recommends for a package that was in "policy-good" state
+
+   Note that this is not perfect as it will ignore further breakage
+   for already broken policy (recommends)
+*/
+bool pkgProblemResolver::InstOrNewPolicyBroken(pkgCache::PkgIterator I)
+{
+   // a broken install is always a problem
+   if (Cache[I].InstBroken() == true)
+   {
+      if (Debug == true)
+        std::clog << "  Dependencies are not satisfied for " << I << std::endl;
+      return true;
+   }
+
+   // a newly broken policy (recommends/suggests) is a problem
+   if (Cache[I].NowPolicyBroken() == false &&
+       Cache[I].InstPolicyBroken() == true)
+   {
+      if (Debug == true)
+        std::clog << "  Policy breaks with upgrade of " << I << std::endl;
+      return true;
+   }
+
+   return false;
+}
+                                                                       /*}}}*/

 // ProblemResolver::ResolveByKeep - Resolve problems using keep                /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the work horse of the soft upgrade routine. It is very gental 
    in that it does not install or remove any packages. It is assumed that the
    system was non-broken previously. */
 // ProblemResolver::ResolveByKeep - Resolve problems using keep                /*{{{*/
 // ---------------------------------------------------------------------
 /* This is the work horse of the soft upgrade routine. It is very gental 
    in that it does not install or remove any packages. It is assumed that the
    system was non-broken previously. */

+#if APT_PKG_ABI < 413

 bool pkgProblemResolver::ResolveByKeep()
 {
 bool pkgProblemResolver::ResolveByKeep()
 {

-   unsigned long Size = Cache.HeaderP->PackageCount;
+   return ResolveByKeep(NULL);
+}
+#endif
+bool pkgProblemResolver::ResolveByKeep(OpProgress * const Progress)
+{
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal")
+      return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, Progress);
+   return ResolveByKeepInternal();
+}
+                                                                       /*}}}*/
+// ProblemResolver::ResolveByKeepInternal - Resolve problems using keep        /*{{{*/
+// ---------------------------------------------------------------------
+/* This is the work horse of the soft upgrade routine. It is very gental
+   in that it does not install or remove any packages. It is assumed that the
+   system was non-broken previously. */
+bool pkgProblemResolver::ResolveByKeepInternal()
+{
+   pkgDepCache::ActionGroup group(Cache);
+
+   unsigned long Size = Cache.Head().PackageCount;

 
 

-   if (Debug == true)      
-      clog << "Entering ResolveByKeep" << endl;
-   

    MakeScores();
    
    /* We have to order the packages so that the broken fixing pass 
    MakeScores();
    
    /* We have to order the packages so that the broken fixing pass 


@@ -801,30 +1177,47 @@ bool pkgProblemResolver::ResolveByKeep()
       would cause the removal of even lower score packages. */
    pkgCache::Package **PList = new pkgCache::Package *[Size];
    pkgCache::Package **PEnd = PList;
       would cause the removal of even lower score packages. */
    pkgCache::Package **PList = new pkgCache::Package *[Size];
    pkgCache::Package **PEnd = PList;

-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)

       *PEnd++ = I;
    This = this;
    qsort(PList,PEnd - PList,sizeof(*PList),&ScoreSort);
       *PEnd++ = I;
    This = this;
    qsort(PList,PEnd - PList,sizeof(*PList),&ScoreSort);

-   
+
+   if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
+   {
+      clog << "Show Scores" << endl;
+      for (pkgCache::Package **K = PList; K != PEnd; K++)
+         if (Scores[(*K)->ID] != 0)
+         {
+           pkgCache::PkgIterator Pkg(Cache,*K);
+           clog << Scores[(*K)->ID] << ' ' << Pkg << std::endl;
+         }
+   }
+
+   if (Debug == true)
+      clog << "Entering ResolveByKeep" << endl;
+

    // Consider each broken package 
    pkgCache::Package **LastStop = 0;
    for (pkgCache::Package **K = PList; K != PEnd; K++)
    {
       pkgCache::PkgIterator I(Cache,*K);
 
    // Consider each broken package 
    pkgCache::Package **LastStop = 0;
    for (pkgCache::Package **K = PList; K != PEnd; K++)
    {
       pkgCache::PkgIterator I(Cache,*K);
 

-      if (Cache[I].InstallVer == 0 || Cache[I].InstBroken() == false)
+      if (Cache[I].InstallVer == 0)

         continue;
 
         continue;
 

+      if (InstOrNewPolicyBroken(I) == false)
+         continue;
+

       /* Keep the package. If this works then great, otherwise we have
       /* Keep the package. If this works then great, otherwise we have

-                to be significantly more agressive and manipulate its dependencies */      
+        to be significantly more aggressive and manipulate its dependencies */

       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)
       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)

-           clog << "Keeping package " << I.Name() << endl;
-        Cache.MarkKeep(I);
-        if (Cache[I].InstBroken() == false)
+           clog << "Keeping package " << I.FullName(false) << endl;
+        Cache.MarkKeep(I, false, false);
+        if (InstOrNewPolicyBroken(I) == false)

         {
         {

-           K = PList;
+           K = PList - 1;

            continue;
         }
       }
            continue;
         }
       }


@@ -832,18 +1225,10 @@ bool pkgProblemResolver::ResolveByKeep()
       // Isolate the problem dependencies
       for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false;)
       {
       // Isolate the problem dependencies
       for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false;)
       {

-        // Compute a single dependency element (glob or)
-        pkgCache::DepIterator Start = D;
-        pkgCache::DepIterator End = D;
-        unsigned char State = 0;
-        for (bool LastOR = true; D.end() == false && LastOR == true; D++)
-        {
-           State |= Cache[D];
-           LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
-           if (LastOR == true)
-              End = D;
-        }
-        
+        DepIterator Start;
+        DepIterator End;
+        D.GlobOr(Start,End);
+

         // We only worry about critical deps.
         if (End.IsCritical() != true)
            continue;
         // We only worry about critical deps.
         if (End.IsCritical() != true)
            continue;


@@ -851,57 +1236,130 @@ bool pkgProblemResolver::ResolveByKeep()
         // Dep is ok
         if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
            continue;
         // Dep is ok
         if ((Cache[End] & pkgDepCache::DepGInstall) == pkgDepCache::DepGInstall)
            continue;

-        
-        // Hm, the group is broken.. I have no idea how to handle this
-        if (Start != End)
-        {
-           clog << "Note, a broken or group was found in " << I.Name() << "." << endl;
-           if ((Flags[I->ID] & Protected) == 0)
-              Cache.MarkKeep(I);
-           break;
-        }
-        
-        if (Debug == true)
-           clog << "Package " << I.Name() << " has broken dep on " << End.TargetPkg().Name() << endl;
-        
-        // Look at all the possible provides on this package
-        pkgCache::Version **VList = End.AllTargets();
-        bool Done = false;
-        for (pkgCache::Version **V = VList; *V != 0; V++)
+
+        /* Hm, the group is broken.. I suppose the best thing to do is to
+           is to try every combination of keep/not-keep for the set, but thats
+           slow, and this never happens, just be conservative and assume the
+           list of ors is in preference and keep till it starts to work. */
+        while (true)

         {
         {

-           pkgCache::VerIterator Ver(Cache,*V);
-           pkgCache::PkgIterator Pkg = Ver.ParentPkg();
-           
-           // It is not keepable
-           if (Cache[Pkg].InstallVer == 0 || 
-               Pkg->CurrentVer == 0)
-              continue;
-           
-           if ((Flags[I->ID] & Protected) == 0)
+           if (Debug == true)
+              clog << "Package " << I.FullName(false) << " " << Start << endl;
+
+           // Look at all the possible provides on this package
+           SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
+           for (pkgCache::Version **V = VList; *V != 0; V++)

            {
            {

-              if (Debug == true)
-                 clog << "  Keeping Package " << Pkg.Name() << " due to dep" << endl;
-              Cache.MarkKeep(Pkg);
+              pkgCache::VerIterator Ver(Cache,*V);
+              pkgCache::PkgIterator Pkg = Ver.ParentPkg();
+              
+              // It is not keepable
+              if (Cache[Pkg].InstallVer == 0 ||
+                  Pkg->CurrentVer == 0)
+                 continue;
+              
+              if ((Flags[I->ID] & Protected) == 0)
+              {
+                 if (Debug == true)
+                    clog << "  Keeping Package " << Pkg.FullName(false) << " due to " << Start.DepType() << endl;
+                 Cache.MarkKeep(Pkg, false, false);
+              }
+              
+              if (InstOrNewPolicyBroken(I) == false)
+                 break;

            }
            
            }
            

-           if (Cache[I].InstBroken() == false)
+           if (InstOrNewPolicyBroken(I) == false)

               break;
               break;

-        }

 
 

-        if (Cache[I].InstBroken() == false)
+           if (Start == End)
+              break;
+           ++Start;
+        }
+             
+        if (InstOrNewPolicyBroken(I) == false)

            break;
       }
 
            break;
       }
 

-      if (Cache[I].InstBroken() == true)
+      if (InstOrNewPolicyBroken(I) == true)

         continue;
       
       // Restart again.
         continue;
       
       // Restart again.

-      if (K == LastStop)
-        return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.",I.Name());
+      if (K == LastStop) {
+          // I is an iterator based off our temporary package list,
+          // so copy the name we need before deleting the temporary list
+          std::string const LoopingPackage = I.FullName(false);
+          delete[] PList;
+          return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.", LoopingPackage.c_str());
+      }

       LastStop = K;
       LastStop = K;

-      K = PList;
-   }   
+      K = PList - 1;
+   }

 
 

+   delete[] PList;

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

+// ProblemResolver::InstallProtect - deprecated cpu-eating no-op       /*{{{*/
+// ---------------------------------------------------------------------
+/* Actions issued with FromUser bit set are protected from further
+   modification (expect by other calls with FromUser set) nowadays , so we
+   don't need to reissue actions here, they are already set in stone. */
+void pkgProblemResolver::InstallProtect()
+{
+   pkgDepCache::ActionGroup group(Cache);
+
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+   {
+      if ((Flags[I->ID] & Protected) == Protected)
+      {
+        if ((Flags[I->ID] & ToRemove) == ToRemove)
+           Cache.MarkDelete(I);
+        else 
+        {
+           // preserve the information whether the package was auto
+           // or manually installed
+           bool autoInst = (Cache[I].Flags & pkgCache::Flag::Auto);
+           Cache.MarkInstall(I, false, 0, !autoInst);
+        }
+      }
+   }   
+}
+                                                                       /*}}}*/
+// PrioSortList - Sort a list of versions by priority                  /*{{{*/
+// ---------------------------------------------------------------------
+/* This is ment to be used in conjunction with AllTargets to get a list 
+   of versions ordered by preference. */
+static pkgCache *PrioCache;
+static int PrioComp(const void *A,const void *B)
+{
+   pkgCache::VerIterator L(*PrioCache,*(pkgCache::Version **)A);
+   pkgCache::VerIterator R(*PrioCache,*(pkgCache::Version **)B);
+   
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
+     return 1;
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+     return -1;
+
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Important) != pkgCache::Flag::Important)
+     return 1;
+   if ((L.ParentPkg()->Flags & pkgCache::Flag::Important) != pkgCache::Flag::Important &&
+       (R.ParentPkg()->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
+     return -1;
+   
+   if (L->Priority != R->Priority)
+      return R->Priority - L->Priority;
+   return strcmp(L.ParentPkg().Name(),R.ParentPkg().Name());
+}
+void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
+{
+   unsigned long Count = 0;
+   PrioCache = &Cache;
+   for (pkgCache::Version **I = List; *I != 0; I++)
+      Count++;
+   qsort(List,Count,sizeof(*List),PrioComp);
+}
+                                                                       /*}}}*/