criss-cross merge with my sid branch

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

diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index c2187244907fa241779449e3e1080bc5e523b3a0..eeb74a434eb6846304d1199fcf334c5c69046d6d 100644 (file)
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -15,7 +15,9 @@
 #include <apt-pkg/algorithms.h>
 
 #include <apt-pkg/fileutl.h>
 #include <apt-pkg/algorithms.h>
 
 #include <apt-pkg/fileutl.h>

+#include <apt-pkg/strutl.h>

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

+#include <apt-pkg/aptconfiguration.h>

 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/tagfile.h>
 
 #include <apt-pkg/pkgsystem.h>
 #include <apt-pkg/tagfile.h>
 


@@ -26,8 +28,8 @@
 #include <sys/stat.h>
 
 #include <apti18n.h>    
 #include <sys/stat.h>
 
 #include <apti18n.h>    

-
-// helper for Install-Recommends-Sections and Never-MarkAuto-Sections
+                                                                       /*}}}*/
+// helper for Install-Recommends-Sections and Never-MarkAuto-Sections  /*{{{*/

 static bool 
 ConfigValueInSubTree(const char* SubTree, const char *needle)
 {
 static bool 
 ConfigValueInSubTree(const char* SubTree, const char *needle)
 {


@@ -46,9 +48,8 @@ ConfigValueInSubTree(const char* SubTree, const char *needle)
    }
    return false;
 }
    }
    return false;
 }

-
-
-pkgDepCache::ActionGroup::ActionGroup(pkgDepCache &cache) :
+                                                                       /*}}}*/
+pkgDepCache::ActionGroup::ActionGroup(pkgDepCache &cache) :            /*{{{*/

   cache(cache), released(false)
 {
   ++cache.group_level;
   cache(cache), released(false)
 {
   ++cache.group_level;


@@ -76,13 +77,15 @@ pkgDepCache::ActionGroup::~ActionGroup()
 {
   release();
 }
 {
   release();
 }

-
+                                                                       /*}}}*/

 // DepCache::pkgDepCache - Constructors                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 pkgDepCache::pkgDepCache(pkgCache *pCache,Policy *Plcy) :
   group_level(0), Cache(pCache), PkgState(0), DepState(0)
 {
 // DepCache::pkgDepCache - Constructors                                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 pkgDepCache::pkgDepCache(pkgCache *pCache,Policy *Plcy) :
   group_level(0), Cache(pCache), PkgState(0), DepState(0)
 {

+   DebugMarker = _config->FindB("Debug::pkgDepCache::Marker", false);
+   DebugAutoInstall = _config->FindB("Debug::pkgDepCache::AutoInstall", false);

    delLocalPolicy = 0;
    LocalPolicy = Plcy;
    if (LocalPolicy == 0)
    delLocalPolicy = 0;
    LocalPolicy = Plcy;
    if (LocalPolicy == 0)


@@ -127,7 +130,7 @@ bool pkgDepCache::Init(OpProgress *Prog)
    int Done = 0;
    for (PkgIterator I = PkgBegin(); I.end() != true; I++,Done++)
    {
    int Done = 0;
    for (PkgIterator I = PkgBegin(); I.end() != true; I++,Done++)
    {

-      if (Prog != 0)
+      if (Prog != 0 && Done%20 == 0)

         Prog->Progress(Done);
       
       // Find the proper cache slot
         Prog->Progress(Done);
       
       // Find the proper cache slot


@@ -159,8 +162,7 @@ bool pkgDepCache::Init(OpProgress *Prog)
    return true;
 } 
                                                                        /*}}}*/
    return true;
 } 
                                                                        /*}}}*/

-
-bool pkgDepCache::readStateFile(OpProgress *Prog)
+bool pkgDepCache::readStateFile(OpProgress *Prog)                      /*{{{*/

 {
    FileFd state_file;
    string state = _config->FindDir("Dir::State") + "extended_states";
 {
    FileFd state_file;
    string state = _config->FindDir("Dir::State") + "extended_states";


@@ -174,6 +176,7 @@ bool pkgDepCache::readStateFile(OpProgress *Prog)
       pkgTagFile tagfile(&state_file);
       pkgTagSection section;
       int amt=0;
       pkgTagFile tagfile(&state_file);
       pkgTagSection section;
       int amt=0;

+      bool debug_autoremove=_config->FindB("Debug::pkgAutoRemove",false);

       while(tagfile.Step(section)) {
         string pkgname = section.FindS("Package");
         pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);
       while(tagfile.Step(section)) {
         string pkgname = section.FindS("Package");
         pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);


@@ -183,25 +186,27 @@ bool pkgDepCache::readStateFile(OpProgress *Prog)
            short reason = section.FindI("Auto-Installed", 0);
            if(reason > 0)
               PkgState[pkg->ID].Flags  |= Flag::Auto;
            short reason = section.FindI("Auto-Installed", 0);
            if(reason > 0)
               PkgState[pkg->ID].Flags  |= Flag::Auto;

-           if(_config->FindB("Debug::pkgAutoRemove",false))
+           if(debug_autoremove)

               std::cout << "Auto-Installed : " << pkgname << std::endl;
            amt+=section.size();
            if(Prog != NULL)
               Prog->OverallProgress(amt, file_size, 1, 
                                     _("Reading state information"));
         }
               std::cout << "Auto-Installed : " << pkgname << std::endl;
            amt+=section.size();
            if(Prog != NULL)
               Prog->OverallProgress(amt, file_size, 1, 
                                     _("Reading state information"));
         }

-        if(Prog != NULL)
-           Prog->OverallProgress(file_size, file_size, 1, 
-                                 _("Reading state information"));

       }
       }

+      if(Prog != NULL)
+        Prog->OverallProgress(file_size, file_size, 1,
+                              _("Reading state information"));

    }
 
    return true;
 }
    }
 
    return true;
 }

-
-bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)
+                                                                       /*}}}*/
+bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly) /*{{{*/

 {
 {

-   if(_config->FindB("Debug::pkgAutoRemove",false))
+   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
+   
+   if(debug_autoremove)

       std::clog << "pkgDepCache::writeStateFile()" << std::endl;
 
    FileFd StateFile;
       std::clog << "pkgDepCache::writeStateFile()" << std::endl;
 
    FileFd StateFile;


@@ -239,7 +244,7 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)
            continue;
         bool newAuto = (PkgState[pkg->ID].Flags & Flag::Auto);
         if(_config->FindB("Debug::pkgAutoRemove",false))
            continue;
         bool newAuto = (PkgState[pkg->ID].Flags & Flag::Auto);
         if(_config->FindB("Debug::pkgAutoRemove",false))

-           std::clog << "Update exisiting AutoInstall info: " 
+           std::clog << "Update existing AutoInstall info: " 

                      << pkg.Name() << std::endl;
         TFRewriteData rewrite[2];
         rewrite[0].Tag = "Auto-Installed";
                      << pkg.Name() << std::endl;
         TFRewriteData rewrite[2];
         rewrite[0].Tag = "Auto-Installed";


@@ -256,20 +261,20 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)
    for(pkgCache::PkgIterator pkg=Cache->PkgBegin(); !pkg.end(); pkg++) {
       if(PkgState[pkg->ID].Flags & Flag::Auto) {
         if (pkgs_seen.find(pkg.Name()) != pkgs_seen.end()) {
    for(pkgCache::PkgIterator pkg=Cache->PkgBegin(); !pkg.end(); pkg++) {
       if(PkgState[pkg->ID].Flags & Flag::Auto) {
         if (pkgs_seen.find(pkg.Name()) != pkgs_seen.end()) {

-           if(_config->FindB("Debug::pkgAutoRemove",false))
+           if(debug_autoremove)

               std::clog << "Skipping already written " << pkg.Name() << std::endl;
            continue;
         }
          // skip not installed ones if requested
          if(InstalledOnly && pkg->CurrentVer == 0)
             continue;
               std::clog << "Skipping already written " << pkg.Name() << std::endl;
            continue;
         }
          // skip not installed ones if requested
          if(InstalledOnly && pkg->CurrentVer == 0)
             continue;

-        if(_config->FindB("Debug::pkgAutoRemove",false))
+        if(debug_autoremove)

            std::clog << "Writing new AutoInstall: " 
                      << pkg.Name() << std::endl;
         ostr.str(string(""));
         ostr << "Package: " << pkg.Name() 
              << "\nAuto-Installed: 1\n\n";
            std::clog << "Writing new AutoInstall: " 
                      << pkg.Name() << std::endl;
         ostr.str(string(""));
         ostr << "Package: " << pkg.Name() 
              << "\nAuto-Installed: 1\n\n";

-        fprintf(OutFile,ostr.str().c_str());
+        fprintf(OutFile,"%s",ostr.str().c_str());

         fprintf(OutFile,"\n");
       }
    }
         fprintf(OutFile,"\n");
       }
    }


@@ -281,7 +286,7 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)
 
    return true;
 }
 
    return true;
 }

-
+                                                                       /*}}}*/

 // DepCache::CheckDep - Checks a single dependency                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This first checks the dependency against the main target package and
 // DepCache::CheckDep - Checks a single dependency                     /*{{{*/
 // ---------------------------------------------------------------------
 /* This first checks the dependency against the main target package and


@@ -592,6 +597,57 @@ void pkgDepCache::UpdateVerState(PkgIterator Pkg)
    }
 }
                                                                        /*}}}*/
    }
 }
                                                                        /*}}}*/

+// DepCache::RemovePseudoInstalledPkg - MultiArch helper for Update()  /*{{{*/
+// ---------------------------------------------------------------------
+/* We "install" arch all packages for all archs if it is installed. Many
+   of these will be broken. This method will look at these broken Pkg and
+   "remove" it. */
+bool pkgDepCache::RemovePseudoInstalledPkg(PkgIterator &Pkg, std::set<unsigned long> &recheck) {
+   if (unlikely(Pkg->CurrentVer == 0))
+      return false;
+
+   VerIterator V = Pkg.CurrentVer();
+   if (V->MultiArch != Version::All)
+      return false;
+
+   unsigned char const DepState = VersionState(V.DependsList(),DepInstall,DepInstMin,DepInstPolicy);
+   if ((DepState & DepInstMin) == DepInstMin)
+      return false;
+
+   // Dependencies for this arch all are not statisfied
+   // so we installed it only for our convenience: get right of it now.
+   RemoveSizes(Pkg);
+   RemoveStates(Pkg);
+
+   Pkg->CurrentVer = 0;
+   PkgState[Pkg->ID].InstallVer = 0;
+
+   AddStates(Pkg);
+   Update(Pkg);
+   AddSizes(Pkg);
+
+   // After the remove previously satisfied pseudo pkg could be now
+   // no longer satisfied, so we need to recheck the reverse dependencies
+   for (DepIterator d = Pkg.RevDependsList(); d.end() != true; ++d)
+   {
+      PkgIterator const P = d.ParentPkg();
+      if (P->CurrentVer != 0)
+        recheck.insert(P.Index());
+   }
+
+   if (V.end() != true)
+      for (PrvIterator Prv = V.ProvidesList(); Prv.end() != true; Prv++)
+        for (DepIterator d = Prv.ParentPkg().RevDependsList();
+             d.end() != true; ++d)
+        {
+           PkgIterator const P = d.ParentPkg();
+           if (P->CurrentVer != 0)
+              recheck.insert(P.Index());
+        }
+
+   return true;
+}
+                                                                       /*}}}*/

 // DepCache::Update - Figure out all the state information             /*{{{*/
 // ---------------------------------------------------------------------
 /* This will figure out the state of all the packages and all the 
 // DepCache::Update - Figure out all the state information             /*{{{*/
 // ---------------------------------------------------------------------
 /* This will figure out the state of all the packages and all the 


@@ -605,9 +661,13 @@ void pkgDepCache::Update(OpProgress *Prog)
    iKeepCount = 0;
    iBrokenCount = 0;
    iBadCount = 0;
    iKeepCount = 0;
    iBrokenCount = 0;
    iBadCount = 0;

-   
+
+   std::set<unsigned long> recheck;
+

    // Perform the depends pass
    int Done = 0;
    // Perform the depends pass
    int Done = 0;

+   bool const checkMultiArch = APT::Configuration::getArchitectures().size() > 1;
+   unsigned long killed = 0;

    for (PkgIterator I = PkgBegin(); I.end() != true; I++,Done++)
    {
       if (Prog != 0 && Done%20 == 0)
    for (PkgIterator I = PkgBegin(); I.end() != true; I++,Done++)
    {
       if (Prog != 0 && Done%20 == 0)


@@ -615,7 +675,7 @@ void pkgDepCache::Update(OpProgress *Prog)
       for (VerIterator V = I.VersionList(); V.end() != true; V++)
       {
         unsigned char Group = 0;
       for (VerIterator V = I.VersionList(); V.end() != true; V++)
       {
         unsigned char Group = 0;

-        
+

         for (DepIterator D = V.DependsList(); D.end() != true; D++)
         {
            // Build the dependency state.
         for (DepIterator D = V.DependsList(); D.end() != true; D++)
         {
            // Build the dependency state.


@@ -633,16 +693,43 @@ void pkgDepCache::Update(OpProgress *Prog)
                D->Type == Dep::DpkgBreaks ||
                D->Type == Dep::Obsoletes)
               State = ~State;
                D->Type == Dep::DpkgBreaks ||
                D->Type == Dep::Obsoletes)
               State = ~State;

-        }       
+        }

       }
 
       }
 

-      // Compute the pacakge dependency state and size additions
+      // Compute the package dependency state and size additions

       AddSizes(I);
       UpdateVerState(I);
       AddStates(I);
       AddSizes(I);
       UpdateVerState(I);
       AddStates(I);

+
+      if (checkMultiArch != true || I->CurrentVer == 0)
+        continue;
+
+      VerIterator const V = I.CurrentVer();
+      if (V->MultiArch != Version::All)
+        continue;
+
+      recheck.insert(I.Index());
+      --Done; // no progress if we need to recheck the package

    }
 
    }
 

-   if (Prog != 0)      
+   if (checkMultiArch == true) {
+      /* FIXME: recheck breaks proper progress reporting as we don't know
+               how many packages we need to recheck. To lower the effect
+               a bit we increase with a kill, but we should do something more clever… */
+      for(std::set<unsigned long>::const_iterator p = recheck.begin();
+         p != recheck.end(); ++p) {
+        if (Prog != 0 && Done%20 == 0)
+           Prog->Progress(Done);
+        PkgIterator P = PkgIterator(*Cache, Cache->PkgP + *p);
+        if (RemovePseudoInstalledPkg(P, recheck) == true) {
+           ++killed;
+           ++Done;
+        }
+        recheck.erase(p);
+      }
+   }
+
+   if (Prog != 0)

       Prog->Progress(Done);
 
    readStateFile(Prog);
       Prog->Progress(Done);
 
    readStateFile(Prog);


@@ -699,13 +786,12 @@ void pkgDepCache::Update(PkgIterator const &Pkg)
           P.end() != true; P++)
         Update(P.ParentPkg().RevDependsList());
 }
           P.end() != true; P++)
         Update(P.ParentPkg().RevDependsList());
 }

-

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

-

 // DepCache::MarkKeep - Put the package in the keep state              /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // DepCache::MarkKeep - Put the package in the keep state              /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser)
+void pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser,
+                           unsigned long Depth)

 {
    // Simplifies other routines.
    if (Pkg.end() == true)
 {
    // Simplifies other routines.
    if (Pkg.end() == true)


@@ -746,6 +832,9 @@ void pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser)
      P.Flags &= ~Flag::Auto;
 #endif
 
      P.Flags &= ~Flag::Auto;
 #endif
 

+   if (DebugMarker == true)
+      std::clog << OutputInDepth(Depth) << "MarkKeep " << Pkg << " FU=" << FromUser << std::endl;
+

    RemoveSizes(Pkg);
    RemoveStates(Pkg);
 
    RemoveSizes(Pkg);
    RemoveStates(Pkg);
 


@@ -765,7 +854,8 @@ void pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser)
 // DepCache::MarkDelete - Put the package in the delete state          /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // DepCache::MarkDelete - Put the package in the delete state          /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
+void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
+                             unsigned long Depth, bool FromUser)

 {
    // Simplifies other routines.
    if (Pkg.end() == true)
 {
    // Simplifies other routines.
    if (Pkg.end() == true)


@@ -787,6 +877,13 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
    if (Pkg->VersionList == 0)
       return;
 
    if (Pkg->VersionList == 0)
       return;
 

+   // check if we are allowed to install the package
+   if (IsDeleteOk(Pkg,rPurge,Depth,FromUser) == false)
+      return;
+
+   if (DebugMarker == true)
+      std::clog << OutputInDepth(Depth) << "MarkDelete " << Pkg << " FU=" << FromUser << std::endl;
+

    RemoveSizes(Pkg);
    RemoveStates(Pkg);
    
    RemoveSizes(Pkg);
    RemoveStates(Pkg);
    


@@ -799,6 +896,27 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
    AddStates(Pkg);   
    Update(Pkg);
    AddSizes(Pkg);
    AddStates(Pkg);   
    Update(Pkg);
    AddSizes(Pkg);

+
+   // if we remove the pseudo package, we also need to remove the "real"
+   if (Pkg->CurrentVer != 0 && Pkg.CurrentVer().Pseudo() == true)
+      MarkDelete(Pkg.Group().FindPkg("all"), rPurge, Depth+1, FromUser);
+}
+                                                                       /*}}}*/
+// DepCache::IsDeleteOk - check if it is ok to remove this package     /*{{{*/
+// ---------------------------------------------------------------------
+/* The default implementation just honors dpkg hold
+   But an application using this library can override this method
+   to control the MarkDelete behaviour */
+bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
+                             unsigned long Depth, bool FromUser)
+{
+   if (FromUser == false && Pkg->SelectedState == pkgCache::State::Hold && _config->FindB("APT::Ignore-Hold",false) == false)
+   {
+      if (DebugMarker == true)
+        std::clog << OutputInDepth(Depth) << "Hold prevents MarkDelete of " << Pkg << " FU=" << FromUser << std::endl;
+      return false;
+   }
+   return true;

 }
                                                                        /*}}}*/
 // DepCache::MarkInstall - Put the package in the install state                /*{{{*/
 }
                                                                        /*}}}*/
 // DepCache::MarkInstall - Put the package in the install state                /*{{{*/


@@ -826,7 +944,7 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
        P.CandidateVer == (Version *)Pkg.CurrentVer()))
    {
       if (P.CandidateVer == (Version *)Pkg.CurrentVer() && P.InstallVer == 0)
        P.CandidateVer == (Version *)Pkg.CurrentVer()))
    {
       if (P.CandidateVer == (Version *)Pkg.CurrentVer() && P.InstallVer == 0)

-        MarkKeep(Pkg, false, FromUser);
+        MarkKeep(Pkg, false, FromUser, Depth+1);

       return;
    }
 
       return;
    }
 


@@ -836,6 +954,11 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
    // We dont even try to install virtual packages..
    if (Pkg->VersionList == 0)
       return;
    // We dont even try to install virtual packages..
    if (Pkg->VersionList == 0)
       return;

+
+   // check if we are allowed to install the package
+   if (IsInstallOk(Pkg,AutoInst,Depth,FromUser) == false)
+      return;
+

    /* Target the candidate version and remove the autoflag. We reset the
       autoflag below if this was called recursively. Otherwise the user
       should have the ability to de-auto a package by changing its state */
    /* Target the candidate version and remove the autoflag. We reset the
       autoflag below if this was called recursively. Otherwise the user
       should have the ability to de-auto a package by changing its state */


@@ -864,10 +987,13 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
    AddStates(Pkg);
    Update(Pkg);
    AddSizes(Pkg);
    AddStates(Pkg);
    Update(Pkg);
    AddSizes(Pkg);

-   
+

    if (AutoInst == false)
       return;
 
    if (AutoInst == false)
       return;
 

+   if (DebugMarker == true)
+      std::clog << OutputInDepth(Depth) << "MarkInstall " << Pkg << " FU=" << FromUser << std::endl;
+

    DepIterator Dep = P.InstVerIter(*this).DependsList();
    for (; Dep.end() != true;)
    {
    DepIterator Dep = P.InstVerIter(*this).DependsList();
    for (; Dep.end() != true;)
    {


@@ -895,37 +1021,60 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
       if (IsImportantDep(Start) == false)
         continue;
       
       if (IsImportantDep(Start) == false)
         continue;
       

-      /* check if any ImportantDep() (but not Critial) where added
-       * since we installed the package
+      /* Check if any ImportantDep() (but not Critical) were added
+       * since we installed the package.  Also check for deps that
+       * were satisfied in the past: for instance, if a version
+       * restriction in a Recommends was tightened, upgrading the
+       * package should follow that Recommends rather than causing the
+       * dependency to be removed. (bug #470115)

        */
       bool isNewImportantDep = false;
        */
       bool isNewImportantDep = false;

+      bool isPreviouslySatisfiedImportantDep = false;

       if(!ForceImportantDeps && !Start.IsCritical())
       {
         bool found=false;
         VerIterator instVer = Pkg.CurrentVer();
         if(!instVer.end())
         {
       if(!ForceImportantDeps && !Start.IsCritical())
       {
         bool found=false;
         VerIterator instVer = Pkg.CurrentVer();
         if(!instVer.end())
         {

-           for (DepIterator D = instVer.DependsList(); D.end() != true; D++)
-           {
+          for (DepIterator D = instVer.DependsList(); D.end() != true; D++)
+            {

               //FIXME: deal better with or-groups(?)
               DepIterator LocalStart = D;
               //FIXME: deal better with or-groups(?)
               DepIterator LocalStart = D;

-              
-              if(IsImportantDep(D) && Start.TargetPkg() == D.TargetPkg())
-                 found=true;
-           }
+
+              if(IsImportantDep(D) && !D.IsCritical() &&
+                 Start.TargetPkg() == D.TargetPkg())
+                {
+                  if(!isPreviouslySatisfiedImportantDep)
+                    {
+                      DepIterator D2 = D;
+                      while((D2->CompareOp & Dep::Or) != 0)
+                        ++D2;
+
+                      isPreviouslySatisfiedImportantDep =
+                        (((*this)[D2] & DepGNow) != 0);
+                    }
+
+                  found=true;
+                }
+            }

            // this is a new dep if it was not found to be already
            // a important dep of the installed pacakge
            isNewImportantDep = !found;
         }
       }
       if(isNewImportantDep)
            // this is a new dep if it was not found to be already
            // a important dep of the installed pacakge
            isNewImportantDep = !found;
         }
       }
       if(isNewImportantDep)

-        if(_config->FindB("Debug::pkgDepCache::AutoInstall",false) == true)
-           std::clog << "new important dependency: " 
+        if(DebugAutoInstall == true)
+           std::clog << OutputInDepth(Depth) << "new important dependency: "

                      << Start.TargetPkg().Name() << std::endl;
                      << Start.TargetPkg().Name() << std::endl;

+      if(isPreviouslySatisfiedImportantDep)
+       if(DebugAutoInstall == true)
+         std::clog << OutputInDepth(Depth) << "previously satisfied important dependency on "
+                   << Start.TargetPkg().Name() << std::endl;

 
       // skip important deps if the package is already installed
       if (Pkg->CurrentVer != 0 && Start.IsCritical() == false 
 
       // skip important deps if the package is already installed
       if (Pkg->CurrentVer != 0 && Start.IsCritical() == false 

-         && !isNewImportantDep && !ForceImportantDeps)
+         && !isNewImportantDep && !isPreviouslySatisfiedImportantDep
+         && !ForceImportantDeps)

         continue;
       
       /* If we are in an or group locate the first or that can 
         continue;
       
       /* If we are in an or group locate the first or that can 


@@ -968,17 +1117,18 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            }
         }
         
            }
         }
         

-        if (InstPkg.end() == false) 
+        if (InstPkg.end() == false)

         {
         {

-           if(_config->FindB("Debug::pkgDepCache::AutoInstall",false) == true)
-              std::clog << "Installing " << InstPkg.Name() 
-                        << " as dep of " << Pkg.Name() 
+           if(DebugAutoInstall == true)
+              std::clog << OutputInDepth(Depth) << "Installing " << InstPkg.Name()
+                        << " as " << Start.DepType() << " of " << Pkg.Name()

                         << std::endl;
            // now check if we should consider it a automatic dependency or not
            if(Pkg.Section() && ConfigValueInSubTree("APT::Never-MarkAuto-Sections", Pkg.Section()))
            {
                         << std::endl;
            // now check if we should consider it a automatic dependency or not
            if(Pkg.Section() && ConfigValueInSubTree("APT::Never-MarkAuto-Sections", Pkg.Section()))
            {

-              if(_config->FindB("Debug::pkgDepCache::AutoInstall",false) == true)
-                 std::clog << "Setting NOT as auto-installed (direct dep of pkg in APT::Never-MarkAuto-Section)" << std::endl;
+              if(DebugAutoInstall == true)
+                 std::clog << OutputInDepth(Depth) << "Setting NOT as auto-installed (direct "
+                            << Start.DepType() << " of pkg in APT::Never-MarkAuto-Sections)" << std::endl;

               MarkInstall(InstPkg,true,Depth + 1, true);
            }
            else 
               MarkInstall(InstPkg,true,Depth + 1, true);
            }
            else 


@@ -1005,16 +1155,32 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            PkgIterator Pkg = Ver.ParentPkg();
 
            if (Start->Type != Dep::DpkgBreaks)
            PkgIterator Pkg = Ver.ParentPkg();
 
            if (Start->Type != Dep::DpkgBreaks)

-              MarkDelete(Pkg);
-           else
-              if (PkgState[Pkg->ID].CandidateVer != *I)
-                 MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps);
+              MarkDelete(Pkg,false,Depth + 1, false);
+           else if (PkgState[Pkg->ID].CandidateVer != *I)
+              MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps);

         }
         continue;
       }      
    }
 }
                                                                        /*}}}*/
         }
         continue;
       }      
    }
 }
                                                                        /*}}}*/

+// DepCache::IsInstallOk - check if it is ok to install this package   /*{{{*/
+// ---------------------------------------------------------------------
+/* The default implementation just honors dpkg hold
+   But an application using this library can override this method
+   to control the MarkInstall behaviour */
+bool pkgDepCache::IsInstallOk(PkgIterator const &Pkg,bool AutoInst,
+                             unsigned long Depth, bool FromUser)
+{
+   if (FromUser == false && Pkg->SelectedState == pkgCache::State::Hold && _config->FindB("APT::Ignore-Hold",false) == false)
+   {
+      if (DebugMarker == true)
+        std::clog << OutputInDepth(Depth) << "Hold prevents MarkInstall of " << Pkg << " FU=" << FromUser << std::endl;
+      return false;
+   }
+   return true;
+}
+                                                                       /*}}}*/

 // DepCache::SetReInstall - Set the reinstallation flag                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // DepCache::SetReInstall - Set the reinstallation flag                        /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -1114,7 +1280,6 @@ const char *pkgDepCache::StateCache::StripEpoch(const char *Ver)
    return Ver;
 }
                                                                        /*}}}*/
    return Ver;
 }
                                                                        /*}}}*/

-

 // Policy::GetCandidateVer - Returns the Candidate install version     /*{{{*/
 // ---------------------------------------------------------------------
 /* The default just returns the highest available version that is not
 // Policy::GetCandidateVer - Returns the Candidate install version     /*{{{*/
 // ---------------------------------------------------------------------
 /* The default just returns the highest available version that is not


@@ -1151,7 +1316,6 @@ pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator Pkg)
    return Last;
 }
                                                                        /*}}}*/
    return Last;
 }
                                                                        /*}}}*/

-

 // Policy::IsImportantDep - True if the dependency is important                /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // Policy::IsImportantDep - True if the dependency is important                /*{{{*/
 // ---------------------------------------------------------------------
 /* */


@@ -1177,8 +1341,7 @@ bool pkgDepCache::Policy::IsImportantDep(DepIterator Dep)
    return false;
 }
                                                                        /*}}}*/
    return false;
 }
                                                                        /*}}}*/

-
-pkgDepCache::DefaultRootSetFunc::DefaultRootSetFunc()
+pkgDepCache::DefaultRootSetFunc::DefaultRootSetFunc()                  /*{{{*/

   : constructedSuccessfully(false)
 {
   Configuration::Item const *Opts;
   : constructedSuccessfully(false)
 {
   Configuration::Item const *Opts;


@@ -1207,8 +1370,8 @@ pkgDepCache::DefaultRootSetFunc::DefaultRootSetFunc()
 
   constructedSuccessfully = true;
 }
 
   constructedSuccessfully = true;
 }

-
-pkgDepCache::DefaultRootSetFunc::~DefaultRootSetFunc()
+                                                                       /*}}}*/
+pkgDepCache::DefaultRootSetFunc::~DefaultRootSetFunc()                 /*{{{*/

 {
   for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
     {
 {
   for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
     {


@@ -1216,9 +1379,8 @@ pkgDepCache::DefaultRootSetFunc::~DefaultRootSetFunc()
       delete rootSetRegexp[i];
     }
 }
       delete rootSetRegexp[i];
     }
 }

-
-
-bool pkgDepCache::DefaultRootSetFunc::InRootSet(const pkgCache::PkgIterator &pkg)
+                                                                       /*}}}*/
+bool pkgDepCache::DefaultRootSetFunc::InRootSet(const pkgCache::PkgIterator &pkg) /*{{{*/

 {
    for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
       if (regexec(rootSetRegexp[i], pkg.Name(), 0, 0, 0) == 0)
 {
    for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
       if (regexec(rootSetRegexp[i], pkg.Name(), 0, 0, 0) == 0)


@@ -1226,8 +1388,8 @@ bool pkgDepCache::DefaultRootSetFunc::InRootSet(const pkgCache::PkgIterator &pkg
 
    return false;
 }
 
    return false;
 }

-
-pkgDepCache::InRootSetFunc *pkgDepCache::GetRootSetFunc()
+                                                                       /*}}}*/
+pkgDepCache::InRootSetFunc *pkgDepCache::GetRootSetFunc()              /*{{{*/

 {
   DefaultRootSetFunc *f = new DefaultRootSetFunc;
   if(f->wasConstructedSuccessfully())
 {
   DefaultRootSetFunc *f = new DefaultRootSetFunc;
   if(f->wasConstructedSuccessfully())


@@ -1238,7 +1400,7 @@ pkgDepCache::InRootSetFunc *pkgDepCache::GetRootSetFunc()
       return NULL;
     }
 }
       return NULL;
     }
 }

-
+                                                                       /*}}}*/

 bool pkgDepCache::MarkFollowsRecommends()
 {
   return _config->FindB("APT::AutoRemove::RecommendsImportant", true);
 bool pkgDepCache::MarkFollowsRecommends()
 {
   return _config->FindB("APT::AutoRemove::RecommendsImportant", true);


@@ -1249,11 +1411,12 @@ bool pkgDepCache::MarkFollowsSuggests()
   return _config->FindB("APT::AutoRemove::SuggestsImportant", false);
 }
 
   return _config->FindB("APT::AutoRemove::SuggestsImportant", false);
 }
 

-// the main mark algorithm
+// pkgDepCache::MarkRequired - the main mark algorithm                 /*{{{*/

 bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
 {
    bool follow_recommends;
    bool follow_suggests;
 bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
 {
    bool follow_recommends;
    bool follow_suggests;

+   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);

 
    // init the states
    for(PkgIterator p = PkgBegin(); !p.end(); ++p)
 
    // init the states
    for(PkgIterator p = PkgBegin(); !p.end(); ++p)


@@ -1262,8 +1425,7 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
       PkgState[p->ID].Garbage = false;
 
       // debug output
       PkgState[p->ID].Garbage = false;
 
       // debug output

-      if(_config->FindB("Debug::pkgAutoRemove",false) 
-        && PkgState[p->ID].Flags & Flag::Auto)
+      if(debug_autoremove && PkgState[p->ID].Flags & Flag::Auto)

         std::clog << "AutoDep: " << p.Name() << std::endl;
    }
 
         std::clog << "AutoDep: " << p.Name() << std::endl;
    }
 


@@ -1283,7 +1445,7 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
       {
         // the package is installed (and set to keep)
         if(PkgState[p->ID].Keep() && !p.CurrentVer().end())
       {
         // the package is installed (and set to keep)
         if(PkgState[p->ID].Keep() && !p.CurrentVer().end())

-           MarkPackage(p, p.CurrentVer(),
+           MarkPackage(p, p.CurrentVer(),

                        follow_recommends, follow_suggests);
         // the package is to be installed 
         else if(PkgState[p->ID].Install())
                        follow_recommends, follow_suggests);
         // the package is to be installed 
         else if(PkgState[p->ID].Install())


@@ -1294,8 +1456,8 @@ bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
 
    return true;
 }
 
    return true;
 }

-
-// mark a single package in Mark-and-Sweep
+                                                                       /*}}}*/
+// MarkPackage - mark a single package in Mark-and-Sweep               /*{{{*/

 void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
                              const pkgCache::VerIterator &ver,
                              bool follow_recommends,
 void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
                              const pkgCache::VerIterator &ver,
                              bool follow_recommends,


@@ -1334,7 +1496,20 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
    if(state.Marked)
       return;
 
    if(state.Marked)
       return;
 

-   //std::cout << "Setting Marked for: " << pkg.Name() << std::endl;
+   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove", false);
+   
+   if(debug_autoremove)
+     {
+       std::clog << "Marking: " << pkg.Name();
+       if(!ver.end())
+        std::clog << " " << ver.VerStr();
+       if(!currver.end())
+        std::clog << ", Curr=" << currver.VerStr();
+       if(!instver.end())
+        std::clog << ", Inst=" << instver.VerStr();
+       std::clog << std::endl;
+     }
+

    state.Marked=true;
 
    if(!ver.end())
    state.Marked=true;
 
    if(!ver.end())


@@ -1354,6 +1529,19 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
           {
              if(_system->VS->CheckDep(V.VerStr(), d->CompareOp, d.TargetVer()))
              {
           {
              if(_system->VS->CheckDep(V.VerStr(), d->CompareOp, d.TargetVer()))
              {

+               if(debug_autoremove)
+                 {
+                   std::clog << "Following dep: " << d.ParentPkg().Name()
+                             << " " << d.ParentVer().VerStr() << " "
+                             << d.DepType() << " "
+                             << d.TargetPkg().Name();
+                   if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
+                     {
+                       std::clog << " (" << d.CompType() << " "
+                                 << d.TargetVer() << ")";
+                     }
+                   std::clog << std::endl;
+                 }

                 MarkPackage(V.ParentPkg(), V, 
                             follow_recommends, follow_suggests);
              }
                 MarkPackage(V.ParentPkg(), V, 
                             follow_recommends, follow_suggests);
              }


@@ -1365,6 +1553,23 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
              if(_system->VS->CheckDep(prv.ProvideVersion(), d->CompareOp, 
                                       d.TargetVer()))
              {
              if(_system->VS->CheckDep(prv.ProvideVersion(), d->CompareOp, 
                                       d.TargetVer()))
              {

+               if(debug_autoremove)
+                 {
+                   std::clog << "Following dep: " << d.ParentPkg().Name()
+                             << " " << d.ParentVer().VerStr() << " "
+                             << d.DepType() << " "
+                             << d.TargetPkg().Name();
+                   if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
+                     {
+                       std::clog << " (" << d.CompType() << " "
+                                 << d.TargetVer() << ")";
+                     }
+                   std::clog << ", provided by "
+                             << prv.OwnerPkg().Name() << " "
+                             << prv.OwnerVer().VerStr()
+                             << std::endl;
+                 }
+

                 MarkPackage(prv.OwnerPkg(), prv.OwnerVer(),
                             follow_recommends, follow_suggests);
              }
                 MarkPackage(prv.OwnerPkg(), prv.OwnerVer(),
                             follow_recommends, follow_suggests);
              }


@@ -1373,12 +1578,14 @@ void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
      }
    }
 }
      }
    }
 }

-
-bool pkgDepCache::Sweep()
+                                                                       /*}}}*/
+bool pkgDepCache::Sweep()                                              /*{{{*/

 {
 {

+   bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
+

    // do the sweep
    for(PkgIterator p=PkgBegin(); !p.end(); ++p)
    // do the sweep
    for(PkgIterator p=PkgBegin(); !p.end(); ++p)

-  {
+   {

      StateCache &state=PkgState[p->ID];
 
      // skip required packages
      StateCache &state=PkgState[p->ID];
 
      // skip required packages


@@ -1390,10 +1597,11 @@ bool pkgDepCache::Sweep()
      if(!state.Marked && (!p.CurrentVer().end() || state.Install()))
      {
        state.Garbage=true;
      if(!state.Marked && (!p.CurrentVer().end() || state.Install()))
      {
        state.Garbage=true;

-       if(_config->FindB("Debug::pkgAutoRemove",false))
+       if(debug_autoremove)

           std::cout << "Garbage: " << p.Name() << std::endl;
      }
   }   
 
    return true;
 }
           std::cout << "Garbage: " << p.Name() << std::endl;
      }
   }   
 
    return true;
 }

+                                                                       /*}}}*/