reorder includes: add <config.h> if needed and include it at first

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

diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc
index f1e51131a363adefe89f780c90dae5375b19e6dd..d5652791c1a1964fe0d0f14c56aa7f1ce2ea0dda 100644 (file)
--- a/apt-pkg/algorithms.cc
+++ b/apt-pkg/algorithms.cc
@@ -14,18 +14,23 @@
    ##################################################################### */
                                                                        /*}}}*/
 // 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 <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;
 


@@ -58,7 +63,7 @@ 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)
    {


@@ -90,21 +95,6 @@ bool pkgSimulate::Install(PkgIterator iPkg,string /*File*/)
    Describe(Pkg,cout,true,true);
    Sim.MarkInstall(Pkg,false);
 
    Describe(Pkg,cout,true,true);
    Sim.MarkInstall(Pkg,false);
 

-   if (strcmp(Pkg.Arch(),"all") == 0)
-   {
-      pkgCache::GrpIterator G = Pkg.Group();
-      pkgCache::GrpIterator iG = iPkg.Group();
-      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
-      {
-        if (strcmp(P.Arch(), "all") == 0)
-           continue;
-        if (iG.FindPkg(P.Arch())->CurrentVer == 0)
-           continue;
-        Flags[P->ID] = 1;
-        Sim.MarkInstall(P, false);
-      }
-   }
-

    // Look for broken conflicts+predepends.
    for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
    {
    // Look for broken conflicts+predepends.
    for (PkgIterator I = Sim.PkgBegin(); I.end() == false; I++)
    {


@@ -116,16 +106,14 @@ 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());

            }       
         }
       }      
            }       
         }
       }      


@@ -150,22 +138,9 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
    
    Flags[Pkg->ID] = 2;
 
    
    Flags[Pkg->ID] = 2;
 

-   if (strcmp(Pkg.Arch(),"all") == 0)
-   {
-      pkgCache::GrpIterator G = Pkg.Group();
-      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
-      {
-        if (strcmp(P.Arch(), "all") == 0)
-           continue;
-        if (Flags[P->ID] == 1)
-           Flags[P->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();
       
 
       Sim.Update();
       


@@ -177,17 +152,17 @@ bool pkgSimulate::Configure(PkgIterator iPkg)
            continue;
         
         if (D->Type == pkgCache::Dep::Obsoletes)
            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
    {


@@ -214,21 +189,6 @@ bool pkgSimulate::Remove(PkgIterator iPkg,bool Purge)
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
 
    Flags[Pkg->ID] = 3;
    Sim.MarkDelete(Pkg);
 

-   if (strcmp(Pkg.Arch(),"all") == 0)
-   {
-      pkgCache::GrpIterator G = Pkg.Group();
-      pkgCache::GrpIterator iG = iPkg.Group();
-      for (pkgCache::PkgIterator P = G.FindPkg("any"); P.end() != true; P = G.NextPkg(P))
-      {
-        if (strcmp(P.Arch(), "all") == 0)
-           continue;
-        if (iG.FindPkg(P.Arch())->CurrentVer == 0)
-           continue;
-        Flags[P->ID] = 3;
-        Sim.MarkDelete(P);
-      }
-   }
-

    if (Purge == true)
       cout << "Purg ";
    else
    if (Purge == true)
       cout << "Purg ";
    else


@@ -254,7 +214,7 @@ void pkgSimulate::ShortBreaks()
       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() << "! ";*/
       }      


@@ -290,7 +250,7 @@ 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;


@@ -325,7 +285,7 @@ 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;


@@ -372,8 +332,21 @@ 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 */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    /* Auto upgrade all installed packages, this provides the basis 
       for the installation */
    for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)


@@ -417,6 +390,12 @@ 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);


@@ -683,12 +662,10 @@ 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;
       }


@@ -709,7 +686,7 @@ 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


@@ -720,7 +697,7 @@ 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


@@ -733,13 +710,11 @@ 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;
            }     
         }
               Fail = true;
            }     
         }


@@ -763,11 +738,24 @@ 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 


@@ -781,12 +769,10 @@ 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
    // Record which packages are marked for install
    bool Again = false;
    do


@@ -816,7 +802,9 @@ 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
    /* 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


@@ -847,6 +835,7 @@ 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;


@@ -863,7 +852,7 @@ 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;


@@ -879,14 +868,14 @@ 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];


@@ -904,22 +893,22 @@ 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;
                  }


@@ -956,16 +945,14 @@ 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)


@@ -986,17 +973,29 @@ 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)


@@ -1026,7 +1025,7 @@ 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
                  {                  
                  }               
                  else
                  {                  


@@ -1036,11 +1035,30 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
                        if (InOr == false)
                        {
                           if (Debug == true)
                        if (InOr == false)
                        {
                           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);
+                       }

                     }
                  }
                                  
                     }
                  }
                                  


@@ -1050,25 +1068,17 @@ 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;
                     }


@@ -1079,7 +1089,7 @@ 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->Pkg = Pkg;
                  LEnd->Dep = End;


@@ -1092,10 +1102,8 @@ bool pkgProblemResolver::Resolve(bool BrokenFix)
            }
 
            // Hm, nothing can possibly satisify this dep. Nuke it.
            }
 
            // 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();


@@ -1111,12 +1119,12 @@ 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);
               }


@@ -1141,19 +1149,17 @@ 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);
               }
 


@@ -1184,13 +1190,12 @@ 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();
    for (;I.end() != true; I++) {
       if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) {
         if(_config->FindI("Debug::pkgAutoRemove",false)) {
    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.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;


@@ -1201,12 +1206,52 @@ 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)
+      return true;
+
+   // a newly broken policy (recommends/suggests) is a problem
+   if (Cache[I].NowPolicyBroken() == false &&
+       Cache[I].InstPolicyBroken() == true)
+      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);
 


@@ -1245,17 +1290,20 @@ 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;


@@ -1284,7 +1332,7 @@ 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();


@@ -1301,15 +1349,15 @@ 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;
 
            if (Start == End)


@@ -1317,16 +1365,16 @@ bool pkgProblemResolver::ResolveByKeep()
            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;
    }   


@@ -1458,9 +1506,9 @@ 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