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updating <date> tags and the po files for the manpages
[apt.git] / apt-pkg / algorithms.cc
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index 34da745dea5ac67a2b25c1e83d7478e96f0a7a27..2d710097ad608d6e43b7f079fea16ddef1e2bdf3 100644 (file)
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -14,18 +14,26 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
+#include <config.h>
+
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/configuration.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/acquire-item.h>
-    
-#include <apti18n.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/sourcelist.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
+
 #include <sys/types.h>
 #include <cstdlib>
 #include <algorithm>
 #include <iostream>
 #include <sys/types.h>
 #include <cstdlib>
 #include <algorithm>
 #include <iostream>
+#include <stdio.h>
+
+#include <apti18n.h>
                                                                        /*}}}*/
 using namespace std;
 
                                                                        /*}}}*/
 using namespace std;
 
@@ -50,6 +58,12 @@ pkgSimulate::pkgSimulate(pkgDepCache *Cache) : pkgPackageManager(Cache),
       FileNames[I] = Jnk;
 }
                                                                        /*}}}*/
       FileNames[I] = Jnk;
 }
                                                                        /*}}}*/
+// Simulate::~Simulate - Destructor                                    /*{{{*/
+pkgSimulate::~pkgSimulate()
+{
+   delete[] Flags;
+}
+                                                                       /*}}}*/
 // Simulate::Describe - Describe a package                             /*{{{*/
 // ---------------------------------------------------------------------
 /* Parameter Current == true displays the current package version,
 // Simulate::Describe - Describe a package                             /*{{{*/
 // ---------------------------------------------------------------------
 /* Parameter Current == true displays the current package version,
@@ -58,7 +72,7 @@ void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Current,bool Candid
 {
    VerIterator Ver(Sim);
  
 {
    VerIterator Ver(Sim);
  
-   out << Pkg.Name();
+   out << Pkg.FullName(true);
 
    if (Current == true)
    {
 
    if (Current == true)
    {
@@ -83,15 +97,15 @@ void pkgSimulate::Describe(PkgIterator Pkg,ostream &out,bool Current,bool Candid
 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;
    
    cout << "Inst ";
    Describe(Pkg,cout,true,true);
    Sim.MarkInstall(Pkg,false);
    Flags[Pkg->ID] = 1;
    
    cout << "Inst ";
    Describe(Pkg,cout,true,true);
    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;
@@ -101,16 +115,14 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
         DepIterator Start;
         DepIterator End;
         D.GlobOr(Start,End);
         DepIterator Start;
         DepIterator End;
         D.GlobOr(Start,End);
-        if (Start->Type == pkgCache::Dep::Conflicts ||
-            Start->Type == pkgCache::Dep::DpkgBreaks ||
-            Start->Type == pkgCache::Dep::Obsoletes ||
+        if (Start.IsNegative() == true ||
             End->Type == pkgCache::Dep::PreDepends)
          {
            if ((Sim[End] & pkgDepCache::DepGInstall) == 0)
            {
             End->Type == pkgCache::Dep::PreDepends)
          {
            if ((Sim[End] & pkgDepCache::DepGInstall) == 0)
            {
-              cout << " [" << I.Name() << " on " << Start.TargetPkg().Name() << ']';
+              cout << " [" << I.FullName(false) << " on " << Start.TargetPkg().FullName(false) << ']';
               if (Start->Type == pkgCache::Dep::Conflicts)
               if (Start->Type == pkgCache::Dep::Conflicts)
-                 _error->Error("Fatal, conflicts violated %s",I.Name());
+                 _error->Error("Fatal, conflicts violated %s",I.FullName(false).c_str());
            }       
         }
       }      
            }       
         }
       }      
@@ -131,35 +143,35 @@ 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)
    {
-      cout << "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 (D->Type == pkgCache::Dep::Obsoletes)
       {
         if (Sim.IsImportantDep(D) == false || 
             (Sim[D] & pkgDepCache::DepInstall) != 0)
            continue;
         
         if (D->Type == pkgCache::Dep::Obsoletes)
-           cout << " Obsoletes:" << D.TargetPkg().Name();
+           cout << " Obsoletes:" << D.TargetPkg().FullName(false);
         else if (D->Type == pkgCache::Dep::Conflicts)
         else if (D->Type == pkgCache::Dep::Conflicts)
-           cout << " Conflicts:" << D.TargetPkg().Name();
+           cout << " Conflicts:" << D.TargetPkg().FullName(false);
         else if (D->Type == pkgCache::Dep::DpkgBreaks)
         else if (D->Type == pkgCache::Dep::DpkgBreaks)
-           cout << " Breaks:" << D.TargetPkg().Name();
+           cout << " Breaks:" << D.TargetPkg().FullName(false);
         else
         else
-           cout << " Depends:" << D.TargetPkg().Name();
+           cout << " Depends:" << D.TargetPkg().FullName(false);
       }            
       cout << endl;
 
       }            
       cout << endl;
 
-      _error->Error("Conf Broken %s",Pkg.Name());
+      _error->Error("Conf Broken %s",Pkg.FullName(false).c_str());
    }   
    else
    {
    }   
    else
    {
@@ -181,10 +193,11 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
 bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
 {
    // Adapt the iterator
 bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
 {
    // Adapt the iterator
-   PkgIterator Pkg = Sim.FindPkg(iPkg.Name());
+   PkgIterator Pkg = Sim.FindPkg(iPkg.Name(), iPkg.Arch());
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
+
    if (Purge == true)
       cout << "Purg ";
    else
    if (Purge == true)
       cout << "Purg ";
    else
@@ -205,12 +218,12 @@ bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
 void pkgSimulate::ShortBreaks()
 {
    cout << " [";
 void pkgSimulate::ShortBreaks()
 {
    cout << " [";
-   for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
+   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)
-           cout << I.Name() << ' ';
+           cout << I.FullName(false) << ' ';
 /*      else
            cout << I.Name() << "! ";*/
       }      
 /*      else
            cout << I.Name() << "! ";*/
       }      
@@ -227,7 +240,7 @@ bool pkgApplyStatus(pkgDepCache &Cache)
 {
    pkgDepCache::ActionGroup group(Cache);
 
 {
    pkgDepCache::ActionGroup group(Cache);
 
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
    {
       if (I->VersionList == 0)
         continue;
    {
       if (I->VersionList == 0)
         continue;
@@ -246,7 +259,7 @@ bool pkgApplyStatus(pkgDepCache &Cache)
               Cache.MarkInstall(I, false, 0, false);
            else
               return _error->Error(_("The package %s needs to be reinstalled, "
               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.Name());
+                                   "but I can't find an archive for it."),I.FullName(true).c_str());
         }
         
         continue;
         }
         
         continue;
@@ -281,7 +294,7 @@ bool pkgApplyStatus(pkgDepCache &Cache)
         default:
         if (I->InstState != pkgCache::State::Ok)
            return _error->Error("The package %s is not ok and I "
         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;
@@ -296,13 +309,13 @@ bool pkgFixBroken(pkgDepCache &Cache)
    pkgDepCache::ActionGroup group(Cache);
 
    // Auto upgrade all broken packages
    pkgDepCache::ActionGroup group(Cache);
 
    // 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)
         Cache.MarkInstall(I, true, 0, false);
    
    /* Fix packages that are in a NeedArchive state but don't have a
       downloadable install version */
       if (Cache[I].NowBroken() == true)
         Cache.MarkInstall(I, true, 0, false);
    
    /* 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)
@@ -328,23 +341,36 @@ bool pkgFixBroken(pkgDepCache &Cache)
  */
 bool pkgDistUpgrade(pkgDepCache &Cache)
 {
  */
 bool pkgDistUpgrade(pkgDepCache &Cache)
 {
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal") {
+      OpTextProgress Prog(*_config);
+      return EDSP::ResolveExternal(solver.c_str(), Cache, false, true, false, &Prog);
+   }
+
    pkgDepCache::ActionGroup group(Cache);
 
    pkgDepCache::ActionGroup group(Cache);
 
+   /* Upgrade all installed packages first without autoinst to help the resolver
+      in versioned or-groups to upgrade the old solver instead of installing
+      a new one (if the old solver is not the first one [anymore]) */
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+      if (I->CurrentVer != 0)
+        Cache.MarkInstall(I, false, 0, false);
+
    /* Auto upgrade all installed packages, this provides the basis 
       for the installation */
    /* Auto upgrade all installed packages, this provides the basis 
       for the installation */
-   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
       if (I->CurrentVer != 0)
         Cache.MarkInstall(I, true, 0, false);
 
    /* Now, auto upgrade all essential packages - this ensures that
       the essential packages are present and working */
       if (I->CurrentVer != 0)
         Cache.MarkInstall(I, true, 0, false);
 
    /* 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++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
       if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
         Cache.MarkInstall(I, true, 0, false);
    
    /* We do it again over all previously installed packages to force 
       conflict resolution on them all. */
       if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
         Cache.MarkInstall(I, true, 0, false);
    
    /* 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++)
+   for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
       if (I->CurrentVer != 0)
         Cache.MarkInstall(I, false, 0, false);
 
       if (I->CurrentVer != 0)
         Cache.MarkInstall(I, false, 0, false);
 
@@ -353,7 +379,7 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
    // Hold back held packages.
    if (_config->FindB("APT::Ignore-Hold",false) == false)
    {
    // Hold back held packages.
    if (_config->FindB("APT::Ignore-Hold",false) == false)
    {
-      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
       {
         if (I->SelectedState == pkgCache::State::Hold)
         {
       {
         if (I->SelectedState == pkgCache::State::Hold)
         {
@@ -373,6 +399,12 @@ bool pkgDistUpgrade(pkgDepCache &Cache)
    to install packages not marked for install */
 bool pkgAllUpgrade(pkgDepCache &Cache)
 {
    to install packages not marked for install */
 bool pkgAllUpgrade(pkgDepCache &Cache)
 {
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal") {
+      OpTextProgress Prog(*_config);
+      return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, &Prog);
+   }
+
    pkgDepCache::ActionGroup group(Cache);
 
    pkgProblemResolver Fix(&Cache);
    pkgDepCache::ActionGroup group(Cache);
 
    pkgProblemResolver Fix(&Cache);
@@ -381,7 +413,7 @@ bool pkgAllUpgrade(pkgDepCache &Cache)
       return false;
    
    // Upgrade all installed packages
       return false;
    
    // Upgrade all installed packages
-   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)
         Fix.Protect(I);
    {
       if (Cache[I].Install() == true)
         Fix.Protect(I);
@@ -415,7 +447,7 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache)
    do
    {
       Change = false;
    do
    {
       Change = false;
-      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+      for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
       {
         // Not interesting
         if (Cache[I].Upgrade() == false || Cache[I].NewInstall() == true)
       {
         // Not interesting
         if (Cache[I].Upgrade() == false || Cache[I].NewInstall() == true)
@@ -432,7 +464,7 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache)
               Change = true;
         }       
       }      
               Change = true;
         }       
       }      
-      Count++;
+      ++Count;
    }
    while (Change == true && Count < 10);
 
    }
    while (Change == true && Count < 10);
 
@@ -445,11 +477,11 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache)
 // ProblemResolver::pkgProblemResolver - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // ProblemResolver::pkgProblemResolver - Constructor                   /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgProblemResolver::pkgProblemResolver(pkgDepCache *pCache) : Cache(*pCache)
+pkgProblemResolver::pkgProblemResolver(pkgDepCache *pCache) : d(NULL), Cache(*pCache)
 {
    // Allocate memory
    unsigned long Size = Cache.Head().PackageCount;
 {
    // Allocate memory
    unsigned long Size = Cache.Head().PackageCount;
-   Scores = new signed short[Size];
+   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);
    
@@ -489,7 +521,7 @@ void pkgProblemResolver::MakeScores()
    memset(Scores,0,sizeof(*Scores)*Size);
 
    // Important Required Standard Optional Extra
    memset(Scores,0,sizeof(*Scores)*Size);
 
    // Important Required Standard Optional Extra
-   signed short PrioMap[] = {
+   int PrioMap[] = {
       0,
       _config->FindI("pkgProblemResolver::Scores::Important",3),
       _config->FindI("pkgProblemResolver::Scores::Required",2),
       0,
       _config->FindI("pkgProblemResolver::Scores::Important",3),
       _config->FindI("pkgProblemResolver::Scores::Required",2),
@@ -497,12 +529,12 @@ void pkgProblemResolver::MakeScores()
       _config->FindI("pkgProblemResolver::Scores::Optional",-1),
       _config->FindI("pkgProblemResolver::Scores::Extra",-2)
    };
       _config->FindI("pkgProblemResolver::Scores::Optional",-1),
       _config->FindI("pkgProblemResolver::Scores::Extra",-2)
    };
-   signed short PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
-   signed short PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
-   signed short PrioDepends = _config->FindI("pkgProblemResolver::Scores::Depends",1);
-   signed short PrioRecommends = _config->FindI("pkgProblemResolver::Scores::Recommends",1);
-   signed short AddProtected = _config->FindI("pkgProblemResolver::Scores::AddProtected",10000);
-   signed short AddEssential = _config->FindI("pkgProblemResolver::Scores::AddEssential",5000);
+   int PrioEssentials = _config->FindI("pkgProblemResolver::Scores::Essentials",100);
+   int PrioInstalledAndNotObsolete = _config->FindI("pkgProblemResolver::Scores::NotObsolete",1);
+   int PrioDepends = _config->FindI("pkgProblemResolver::Scores::Depends",1);
+   int PrioRecommends = _config->FindI("pkgProblemResolver::Scores::Recommends",1);
+   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
 
    if (_config->FindB("Debug::pkgProblemResolver::ShowScores",false) == true)
       clog << "Settings used to calculate pkgProblemResolver::Scores::" << endl
@@ -519,18 +551,19 @@ void pkgProblemResolver::MakeScores()
          << "  AddEssential => " << AddEssential << endl;
 
    // Generate the base scores for a package based on its properties
          << "  AddEssential => " << AddEssential << endl;
 
    // 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 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
         a conflicts on a powerfull normal package (ie libc6) */
       
       /* 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
         a conflicts on a powerfull normal package (ie libc6) */
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential
+         || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Score += PrioEssentials;
 
       // We transform the priority
         Score += PrioEssentials;
 
       // We transform the priority
@@ -546,12 +579,12 @@ void pkgProblemResolver::MakeScores()
    }
 
    // Now that we have the base scores we go and propogate dependencies
    }
 
    // Now that we have the base scores we go and propogate dependencies
-   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 = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false; D++)
+      for (pkgCache::DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false; ++D)
       {
         if (D->Type == pkgCache::Dep::Depends || 
             D->Type == pkgCache::Dep::PreDepends)
       {
         if (D->Type == pkgCache::Dep::Depends || 
             D->Type == pkgCache::Dep::PreDepends)
@@ -562,18 +595,18 @@ void pkgProblemResolver::MakeScores()
    }   
    
    // Copy the scores to advoid additive looping
    }   
    
    // Copy the scores to advoid additive looping
-   SPtrArray<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 ||
@@ -588,9 +621,9 @@ void pkgProblemResolver::MakeScores()
 
    /* Now we propogate along provides. This makes the packages that 
       provide important packages extremely important */
 
    /* Now we propogate along provides. This makes the packages that 
       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)
@@ -601,11 +634,12 @@ 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)
         Scores[I->ID] += AddProtected;
    {
       if ((Flags[I->ID] & Protected) != 0)
         Scores[I->ID] += AddProtected;
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
+          (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
         Scores[I->ID] += AddEssential;
    }
 }
         Scores[I->ID] += AddEssential;
    }
 }
@@ -639,12 +673,10 @@ 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;)
       {
       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++;
+        ++D;
         if (LastOR == true)
            End = D;
       }
         if (LastOR == true)
            End = D;
       }
@@ -665,7 +697,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
         if ((Flags[P->ID] & Protected) == Protected)
         {
            if (Debug == true)
         if ((Flags[P->ID] & Protected) == Protected)
         {
            if (Debug == true)
-              clog << "    Reinst Failed because of protected " << P.Name() << endl;
+              clog << "    Reinst Failed because of protected " << P.FullName(false) << endl;
            Fail = true;
         }      
         else
            Fail = true;
         }      
         else
@@ -676,7 +708,7 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
               if (DoUpgrade(P) == false)
               {
                  if (Debug == true)
               if (DoUpgrade(P) == false)
               {
                  if (Debug == true)
-                    clog << "    Reinst Failed because of " << P.Name() << endl;
+                    clog << "    Reinst Failed because of " << P.FullName(false) << endl;
                  Fail = true;
               }
               else
                  Fail = true;
               }
               else
@@ -689,20 +721,18 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
            {
               /* We let the algorithm deal with conflicts on its next iteration,
                it is much smarter than us */
            {
               /* We let the algorithm deal with conflicts on its next iteration,
                it is much smarter than us */
-              if (Start->Type == pkgCache::Dep::Conflicts || 
-                  Start->Type == pkgCache::Dep::DpkgBreaks || 
-                  Start->Type == pkgCache::Dep::Obsoletes)
+              if (Start.IsNegative() == true)
                   break;
               
               if (Debug == true)
                   break;
               
               if (Debug == true)
-                 clog << "    Reinst Failed early because of " << Start.TargetPkg().Name() << endl;
+                 clog << "    Reinst Failed early because of " << Start.TargetPkg().FullName(false) << endl;
               Fail = true;
            }     
         }
         
         if (Start == End)
            break;
               Fail = true;
            }     
         }
         
         if (Start == End)
            break;
-        Start++;
+        ++Start;
       }
       if (Fail == true)
         break;
       }
       if (Fail == true)
         break;
@@ -719,11 +749,24 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
    }    
    
    if (Debug == true)
    }    
    
    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    /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgProblemResolver::Resolve(bool BrokenFix)
+{
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal") {
+      OpTextProgress Prog(*_config);
+      return EDSP::ResolveExternal(solver.c_str(), Cache, false, false, false, &Prog);
+   }
+   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 
@@ -737,18 +780,16 @@ bool pkgProblemResolver::DoUpgrade(pkgCache::PkgIterator Pkg)
  
    The BrokenFix flag enables a mode where the algorithm tries to 
    upgrade packages to advoid problems. */
  
    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)
 {
    pkgDepCache::ActionGroup group(Cache);
 
 {
    pkgDepCache::ActionGroup group(Cache);
 
-   unsigned long Size = Cache.Head().PackageCount;
-
    // 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;
@@ -772,14 +813,16 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
       clog << "Starting" << endl;
    
    MakeScores();
       clog << "Starting" << endl;
    
    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. */
    SPtrArray<pkgCache::Package *> PList = new pkgCache::Package *[Size];
    pkgCache::Package **PEnd = PList;
    /* 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. */
    SPtrArray<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);
@@ -803,6 +846,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
       not be possible for a loop to form (that is a < b < c and fixing b by
       changing a breaks c) */
    bool Change = true;
       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;
@@ -819,7 +863,7 @@ 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;
+              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;
            unsigned long OldBreaks = Cache.BrokenCount();
            pkgCache::Version *OldVer = Cache[I].InstallVer;
            Flags[I->ID] &= ReInstateTried;
@@ -835,14 +879,14 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            }       
            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 (Debug == true)
         }
            
         if (Cache[I].InstallVer == 0 || Cache[I].InstBroken() == false)
            continue;
         
         if (Debug == true)
-           clog << "Investigating " << I.Name() << endl;
+           clog << "Investigating (" << Counter << ") " << I << endl;
         
         // Isolate the problem dependency
         PackageKill KillList[100];
         
         // Isolate the problem dependency
         PackageKill KillList[100];
@@ -860,22 +904,22 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            if (Start == End)
            {
               // Decide what to do
            if (Start == End)
            {
               // Decide what to do
-              if (InOr == true)
+              if (InOr == true && OldEnd == LEnd)
               {
               {
-                 if (OldEnd == LEnd && OrOp == OrRemove)
+                 if (OrOp == OrRemove)
                  {
                     if ((Flags[I->ID] & Protected) != Protected)
                     {
                        if (Debug == true)
                  {
                     if ((Flags[I->ID] & Protected) != Protected)
                     {
                        if (Debug == true)
-                          clog << "  Or group remove for " << I.Name() << endl;
+                          clog << "  Or group remove for " << I.FullName(false) << endl;
                        Cache.MarkDelete(I);
                        Change = true;
                        Cache.MarkDelete(I);
                        Change = true;
-                    }               
-                 }               
-                 if (OldEnd == LEnd && OrOp == OrKeep)
+                    }
+                 }
+                 else if (OrOp == OrKeep)
                  {
                     if (Debug == true)
                  {
                     if (Debug == true)
-                       clog << "  Or group keep for " << I.Name() << endl;
+                       clog << "  Or group keep for " << I.FullName(false) << endl;
                     Cache.MarkKeep(I, false, false);
                     Change = true;
                  }
                     Cache.MarkKeep(I, false, false);
                     Change = true;
                  }
@@ -898,7 +942,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            }
            else
             {
            }
            else
             {
-              Start++;
+              ++Start;
               // We only worry about critical deps.
               if (Start.IsCritical() != true)
                   continue;
               // We only worry about critical deps.
               if (Start.IsCritical() != true)
                   continue;
@@ -912,16 +956,14 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            }
            
            if (Debug == true)
            }
            
            if (Debug == true)
-              clog << "Package " << I.Name() << " has broken " << Start.DepType() << " on " << Start.TargetPkg().Name() << endl;
+              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 cant be found */
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
            if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
 
            /* 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 cant be found */
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
            if (*VList == 0 && (Flags[I->ID] & Protected) != Protected &&
-               Start->Type != pkgCache::Dep::Conflicts &&
-               Start->Type != pkgCache::Dep::DpkgBreaks &&
-               Start->Type != pkgCache::Dep::Obsoletes &&
+               Start.IsNegative() == false &&
                Cache[I].NowBroken() == false)
            {          
               if (InOr == true)
                Cache[I].NowBroken() == false)
            {          
               if (InOr == true)
@@ -942,17 +984,29 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               pkgCache::VerIterator Ver(Cache,*V);
               pkgCache::PkgIterator Pkg = Ver.ParentPkg();
 
               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) << ' ' << (int)Scores[Pkg->ID] <<
+                 " as a solution to " << I.FullName(false) << ' ' << (int)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] ||
                   ((Cache[Start] & pkgDepCache::DepNow) == 0 &&
 
               /* Try to fix the package under consideration rather than
                  fiddle with the VList package */
               if (Scores[I->ID] <= Scores[Pkg->ID] ||
                   ((Cache[Start] & pkgDepCache::DepNow) == 0 &&
-                   End->Type != pkgCache::Dep::Conflicts &&
-                   End->Type != pkgCache::Dep::DpkgBreaks &&
-                   End->Type != pkgCache::Dep::Obsoletes))
+                   End.IsNegative() == false))
               {
                  // Try a little harder to fix protected packages..
                  if ((Flags[I->ID] & Protected) == Protected)
               {
                  // Try a little harder to fix protected packages..
                  if ((Flags[I->ID] & Protected) == Protected)
@@ -982,21 +1036,40 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                        Cache.MarkInstall(I, false, 0, false);
                     
                     if (Debug == true)
                        Cache.MarkInstall(I, false, 0, false);
                     
                     if (Debug == true)
-                       clog << "  Holding Back " << I.Name() << " rather than change " << Start.TargetPkg().Name() << endl;
+                       clog << "  Holding Back " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;
                  }               
                  else
                  {                  
                     if (BrokenFix == false || DoUpgrade(I) == false)
                     {
                        // Consider other options
                  }               
                  else
                  {                  
                     if (BrokenFix == false || DoUpgrade(I) == false)
                     {
                        // Consider other options
-                       if (InOr == false)
+                       if (InOr == false || Cache[I].Garbage == true)
                        {
                           if (Debug == true)
                        {
                           if (Debug == true)
-                             clog << "  Removing " << I.Name() << " rather than change " << Start.TargetPkg().Name() << endl;
+                             clog << "  Removing " << I.FullName(false) << " rather than change " << Start.TargetPkg().FullName(false) << endl;
                           Cache.MarkDelete(I);
                           if (Counter > 1 && Scores[Pkg->ID] > Scores[I->ID])
                              Scores[I->ID] = Scores[Pkg->ID];
                        }
                           Cache.MarkDelete(I);
                           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);
+                       }
                     }
                  }
                                  
                     }
                  }
                                  
@@ -1006,25 +1079,17 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               }
               else
               {
               }
               else
               {
-                 /* 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->Type == pkgCache::Dep::Conflicts ||
-                      Start->Type == pkgCache::Dep::Obsoletes))
-                    continue;
-
                  if (Start->Type == pkgCache::Dep::DpkgBreaks)
                  {
                     // first, try upgradring the package, if that
                     // does not help, the breaks goes onto the
                     // kill list
                  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?
                     // FIXME: use DoUpgrade(Pkg) instead?
-                    if (Cache[End] & pkgDepCache::DepGCVer) 
+                    if (Cache[End] & pkgDepCache::DepGCVer)
                     {
                        if (Debug)
                     {
                        if (Debug)
-                          clog << "  Upgrading " << Pkg.Name() << " due to Breaks field in " << I.Name() << endl;
+                          clog << "  Upgrading " << Pkg.FullName(false) << " due to Breaks field in " << I.FullName(false) << endl;
                        Cache.MarkInstall(Pkg, false, 0, false);
                        continue;
                     }
                        Cache.MarkInstall(Pkg, false, 0, false);
                        continue;
                     }
@@ -1035,23 +1100,20 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                     continue;
                
                  if (Debug == true)
                     continue;
                
                  if (Debug == true)
-                    clog << "  Added " << Pkg.Name() << " to the remove list" << endl;
+                    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 (Start->Type != pkgCache::Dep::Conflicts &&
-                     Start->Type != pkgCache::Dep::Obsoletes)
+                 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 && 
-               Start->Type != pkgCache::Dep::Conflicts &&
-               Start->Type != pkgCache::Dep::DpkgBreaks &&
-               Start->Type != pkgCache::Dep::Obsoletes &&
+           if (VList[0] == 0 &&
+               Start.IsNegative() == false &&
                (Flags[I->ID] & Protected) != Protected)
            {
               bool Installed = Cache[I].Install();
                (Flags[I->ID] & Protected) != Protected)
            {
               bool Installed = Cache[I].Install();
@@ -1067,12 +1129,12 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                     Cache.MarkInstall(I, false, 0, false);
                  
                  if (Debug == true)
                     Cache.MarkInstall(I, false, 0, false);
                  
                  if (Debug == true)
-                    clog << "  Holding Back " << I.Name() << " because I can't find " << Start.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 " << Start.TargetPkg().Name() << endl;
+                    clog << "  Removing " << I.FullName(false) << " because I can't find " << Start.TargetPkg().FullName(false) << endl;
                  if (InOr == false)
                     Cache.MarkDelete(I);
               }
                  if (InOr == false)
                     Cache.MarkDelete(I);
               }
@@ -1097,19 +1159,17 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
               Change = true;
               if ((Cache[J->Dep] & pkgDepCache::DepGNow) == 0)
               {
               Change = true;
               if ((Cache[J->Dep] & pkgDepCache::DepGNow) == 0)
               {
-                 if (J->Dep->Type == pkgCache::Dep::Conflicts || 
-                     J->Dep->Type == pkgCache::Dep::DpkgBreaks ||
-                     J->Dep->Type == pkgCache::Dep::Obsoletes)
+                 if (J->Dep.IsNegative() == true)
                  {
                     if (Debug == true)
                  {
                     if (Debug == true)
-                       clog << "  Fixing " << I.Name() << " via remove of " << J->Pkg.Name() << endl;
+                       clog << "  Fixing " << I.FullName(false) << " via remove of " << J->Pkg.FullName(false) << endl;
                     Cache.MarkDelete(J->Pkg);
                  }
               }
               else
               {
                  if (Debug == true)
                     Cache.MarkDelete(J->Pkg);
                  }
               }
               else
               {
                  if (Debug == true)
-                    clog << "  Fixing " << I.Name() << " via keep of " << J->Pkg.Name() << endl;
+                    clog << "  Fixing " << I.FullName(false) << " via keep of " << J->Pkg.FullName(false) << endl;
                  Cache.MarkKeep(J->Pkg, false, false);
               }
 
                  Cache.MarkKeep(J->Pkg, false, false);
               }
 
@@ -1130,7 +1190,7 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
    {
       // See if this is the result of a hold
       pkgCache::PkgIterator I = Cache.PkgBegin();
    {
       // See if this is the result of a hold
       pkgCache::PkgIterator I = Cache.PkgBegin();
-      for (;I.end() != true; I++)
+      for (;I.end() != true; ++I)
       {
         if (Cache[I].InstBroken() == false)
            continue;
       {
         if (Cache[I].InstBroken() == false)
            continue;
@@ -1140,13 +1200,12 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
       return _error->Error(_("Unable to correct problems, you have held broken 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, but
-   // I didn't managed 
+   // set the auto-flags (mvo: I'm not sure if we _really_ need this)
    pkgCache::PkgIterator I = Cache.PkgBegin();
    pkgCache::PkgIterator I = Cache.PkgBegin();
-   for (;I.end() != true; I++) {
+   for (;I.end() != true; ++I) {
       if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) {
         if(_config->FindI("Debug::pkgAutoRemove",false)) {
       if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) {
         if(_config->FindI("Debug::pkgAutoRemove",false)) {
-           std::clog << "Resolve installed new pkg: " << I.Name() 
+           std::clog << "Resolve installed new pkg: " << I.FullName(false) 
                      << " (now marking it as auto)" << std::endl;
         }
         Cache[I].Flags |= pkgCache::Flag::Auto;
                      << " (now marking it as auto)" << std::endl;
         }
         Cache[I].Flags |= pkgCache::Flag::Auto;
@@ -1157,12 +1216,58 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
    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. */
 bool pkgProblemResolver::ResolveByKeep()
 // 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. */
 bool pkgProblemResolver::ResolveByKeep()
+{
+   std::string const solver = _config->Find("APT::Solver", "internal");
+   if (solver != "internal") {
+      OpTextProgress Prog(*_config);
+      return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, &Prog);
+   }
+   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);
 
 {
    pkgDepCache::ActionGroup group(Cache);
 
@@ -1176,7 +1281,7 @@ 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);
@@ -1201,17 +1306,20 @@ bool pkgProblemResolver::ResolveByKeep()
    {
       pkgCache::PkgIterator I(Cache,*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
                 to be significantly more agressive and manipulate its dependencies */
       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)
       /* Keep the package. If this works then great, otherwise we have
                 to be significantly more agressive and manipulate its dependencies */
       if ((Flags[I->ID] & Protected) == 0)
       {
         if (Debug == true)
-           clog << "Keeping package " << I.Name() << endl;
+           clog << "Keeping package " << I.FullName(false) << endl;
         Cache.MarkKeep(I, false, false);
         Cache.MarkKeep(I, false, false);
-        if (Cache[I].InstBroken() == false)
+        if (InstOrNewPolicyBroken(I) == false)
         {
            K = PList - 1;
            continue;
         {
            K = PList - 1;
            continue;
@@ -1240,7 +1348,7 @@ bool pkgProblemResolver::ResolveByKeep()
         while (true)
         {
            if (Debug == true)
         while (true)
         {
            if (Debug == true)
-              clog << "Package " << I.Name() << " has broken " << Start.DepType() << " on " << Start.TargetPkg().Name() << endl;
+              clog << "Package " << I.FullName(false) << " " << Start << endl;
 
            // Look at all the possible provides on this package
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
 
            // Look at all the possible provides on this package
            SPtrArray<pkgCache::Version *> VList = Start.AllTargets();
@@ -1257,32 +1365,32 @@ bool pkgProblemResolver::ResolveByKeep()
               if ((Flags[I->ID] & Protected) == 0)
               {
                  if (Debug == true)
               if ((Flags[I->ID] & Protected) == 0)
               {
                  if (Debug == true)
-                    clog << "  Keeping Package " << Pkg.Name() << " due to " << Start.DepType() << endl;
+                    clog << "  Keeping Package " << Pkg.FullName(false) << " due to " << Start.DepType() << endl;
                  Cache.MarkKeep(Pkg, false, false);
               }
               
                  Cache.MarkKeep(Pkg, false, false);
               }
               
-              if (Cache[I].InstBroken() == false)
+              if (InstOrNewPolicyBroken(I) == false)
                  break;
            }
            
                  break;
            }
            
-           if (Cache[I].InstBroken() == false)
+           if (InstOrNewPolicyBroken(I) == false)
               break;
 
            if (Start == End)
               break;
               break;
 
            if (Start == End)
               break;
-           Start++;
+           ++Start;
         }
              
         }
              
-        if (Cache[I].InstBroken() == false)
+        if (InstOrNewPolicyBroken(I) == false)
            break;
       }
 
            break;
       }
 
-      if (Cache[I].InstBroken() == true)
+      if (InstOrNewPolicyBroken(I) == true)
         continue;
       
       // Restart again.
       if (K == LastStop)
         continue;
       
       // Restart again.
       if (K == LastStop)
-        return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.",I.Name());
+        return _error->Error("Internal Error, pkgProblemResolver::ResolveByKeep is looping on package %s.",I.FullName(false).c_str());
       LastStop = K;
       K = PList - 1;
    }   
       LastStop = K;
       K = PList - 1;
    }   
@@ -1297,7 +1405,7 @@ void pkgProblemResolver::InstallProtect()
 {
    pkgDepCache::ActionGroup group(Cache);
 
 {
    pkgDepCache::ActionGroup group(Cache);
 
-   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) == Protected)
       {
    {
       if ((Flags[I->ID] & Protected) == Protected)
       {
@@ -1330,6 +1438,13 @@ static int PrioComp(const void *A,const void *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;
    
    if (L->Priority != R->Priority)
       return R->Priority - L->Priority;
@@ -1344,7 +1459,7 @@ void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List)
    qsort(List,Count,sizeof(*List),PrioComp);
 }
                                                                        /*}}}*/
    qsort(List,Count,sizeof(*List),PrioComp);
 }
                                                                        /*}}}*/
-// CacheFile::ListUpdate - update the cache files                      /*{{{*/
+// ListUpdate - construct Fetcher and update the cache files           /*{{{*/
 // ---------------------------------------------------------------------
 /* This is a simple wrapper to update the cache. it will fetch stuff
  * from the network (or any other sources defined in sources.list)
 // ---------------------------------------------------------------------
 /* This is a simple wrapper to update the cache. it will fetch stuff
  * from the network (or any other sources defined in sources.list)
@@ -1353,18 +1468,32 @@ bool ListUpdate(pkgAcquireStatus &Stat,
                pkgSourceList &List, 
                int PulseInterval)
 {
                pkgSourceList &List, 
                int PulseInterval)
 {
-   pkgAcquire::RunResult res;
-   pkgAcquire Fetcher(&Stat);
+   pkgAcquire Fetcher;
+   if (Fetcher.Setup(&Stat, _config->FindDir("Dir::State::Lists")) == false)
+      return false;
 
    // Populate it with the source selection
    if (List.GetIndexes(&Fetcher) == false)
         return false;
 
 
    // Populate it with the source selection
    if (List.GetIndexes(&Fetcher) == false)
         return false;
 
+   return AcquireUpdate(Fetcher, PulseInterval, true);
+}
+                                                                       /*}}}*/
+// AcquireUpdate - take Fetcher and update the cache files             /*{{{*/
+// ---------------------------------------------------------------------
+/* This is a simple wrapper to update the cache with a provided acquire
+ * If you only need control over Status and the used SourcesList use
+ * ListUpdate method instead.
+ */
+bool AcquireUpdate(pkgAcquire &Fetcher, int const PulseInterval,
+                  bool const RunUpdateScripts, bool const ListCleanup)
+{
    // Run scripts
    // Run scripts
-   RunScripts("APT::Update::Pre-Invoke");
-   
-   // check arguments
-   if(PulseInterval>0)
+   if (RunUpdateScripts == true)
+      RunScripts("APT::Update::Pre-Invoke");
+
+   pkgAcquire::RunResult res;
+   if(PulseInterval > 0)
       res = Fetcher.Run(PulseInterval);
    else
       res = Fetcher.Run();
       res = Fetcher.Run(PulseInterval);
    else
       res = Fetcher.Run();
@@ -1375,7 +1504,7 @@ bool ListUpdate(pkgAcquireStatus &Stat,
    bool Failed = false;
    bool TransientNetworkFailure = false;
    for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); 
    bool Failed = false;
    bool TransientNetworkFailure = false;
    for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); 
-       I != Fetcher.ItemsEnd(); I++)
+       I != Fetcher.ItemsEnd(); ++I)
    {
       if ((*I)->Status == pkgAcquire::Item::StatDone)
         continue;
    {
       if ((*I)->Status == pkgAcquire::Item::StatDone)
         continue;
@@ -1401,7 +1530,7 @@ bool ListUpdate(pkgAcquireStatus &Stat,
    // Clean out any old list files
    // Keep "APT::Get::List-Cleanup" name for compatibility, but
    // this is really a global option for the APT library now
    // Clean out any old list files
    // Keep "APT::Get::List-Cleanup" name for compatibility, but
    // this is really a global option for the APT library now
-   if (!TransientNetworkFailure && !Failed &&
+   if (!TransientNetworkFailure && !Failed && ListCleanup == true &&
        (_config->FindB("APT::Get::List-Cleanup",true) == true &&
        _config->FindB("APT::List-Cleanup",true) == true))
    {
        (_config->FindB("APT::Get::List-Cleanup",true) == true &&
        _config->FindB("APT::List-Cleanup",true) == true))
    {
@@ -1412,17 +1541,20 @@ bool ListUpdate(pkgAcquireStatus &Stat,
    }
    
    if (TransientNetworkFailure == true)
    }
    
    if (TransientNetworkFailure == true)
-      _error->Warning(_("Some index files failed to download, they have been ignored, or old ones used instead."));
+      _error->Warning(_("Some index files failed to download. They have been ignored, or old ones used instead."));
    else if (Failed == true)
    else if (Failed == true)
-      return _error->Error(_("Some index files failed to download, they have been ignored, or old ones used instead."));
+      return _error->Error(_("Some index files failed to download. They have been ignored, or old ones used instead."));
 
 
    // Run the success scripts if all was fine
 
 
    // Run the success scripts if all was fine
-   if(!TransientNetworkFailure && !Failed)
-      RunScripts("APT::Update::Post-Invoke-Success");
+   if (RunUpdateScripts == true)
+   {
+      if(!TransientNetworkFailure && !Failed)
+        RunScripts("APT::Update::Post-Invoke-Success");
 
 
-   // Run the other scripts
-   RunScripts("APT::Update::Post-Invoke");
+      // Run the other scripts
+      RunScripts("APT::Update::Post-Invoke");
+   }
    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/
APT (for Cydia)