merged from lp:~donkult/apt/experimental
authorMichael Vogt <michael.vogt@ubuntu.com>
Tue, 13 Mar 2012 12:29:52 +0000 (13:29 +0100)
committerMichael Vogt <michael.vogt@ubuntu.com>
Tue, 13 Mar 2012 12:29:52 +0000 (13:29 +0100)
1  2 
apt-pkg/packagemanager.cc
debian/changelog

@@@ -152,7 -152,7 +152,7 @@@ void pkgPackageManager::ImmediateAdd(Pk
         if(!List->IsFlag(D.TargetPkg(), pkgOrderList::Immediate))
         {
            if(Debug)
-              clog << OutputInDepth(Depth) << "ImmediateAdd(): Adding Immediate flag to " << D.TargetPkg() << " cause of " << D.DepType() << " " << I.Name() << endl;
+              clog << OutputInDepth(Depth) << "ImmediateAdd(): Adding Immediate flag to " << D.TargetPkg() << " cause of " << D.DepType() << " " << I.FullName() << endl;
            List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
            ImmediateAdd(D.TargetPkg(), UseInstallVer, Depth + 1);
         }
@@@ -187,7 -187,7 +187,7 @@@ bool pkgPackageManager::CreateOrderList
          NoImmConfigure == false) || ImmConfigureAll)
        {
         if(Debug && !ImmConfigureAll)
-           clog << "CreateOrderList(): Adding Immediate flag for " << I.Name() << endl;
+           clog << "CreateOrderList(): Adding Immediate flag for " << I.FullName() << endl;
         List->Flag(I,pkgOrderList::Immediate);
         
         if (!ImmConfigureAll) {
@@@ -256,7 -256,7 +256,7 @@@ bool pkgPackageManager::CheckRConflicts
  
        if (EarlyRemove(D.ParentPkg()) == false)
         return _error->Error("Reverse conflicts early remove for package '%s' failed",
-                             Pkg.Name());
+                             Pkg.FullName().c_str());
     }
     return true;
  }
@@@ -294,9 -294,9 +294,9 @@@ bool pkgPackageManager::ConfigureAll(
        if (ConfigurePkgs == true && SmartConfigure(Pkg, 0) == false) {
           if (ImmConfigureAll)
              _error->Error(_("Could not perform immediate configuration on '%s'. "
-                       "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),1);
+                       "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.FullName().c_str(),1);
           else
-             _error->Error("Internal error, packages left unconfigured. %s",Pkg.Name());
+             _error->Error("Internal error, packages left unconfigured. %s",Pkg.FullName().c_str());
         return false;
        }
        
  bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
  {
     // If this is true, only check and correct and dependencies without the Loop flag
-    bool PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop);
+    bool const PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop);
  
     if (Debug) {
        VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer);
-       clog << OutputInDepth(Depth) << "SmartConfigure " << Pkg.Name() << " (" << InstallVer.VerStr() << ")";
+       clog << OutputInDepth(Depth) << "SmartConfigure " << Pkg.FullName() << " (" << InstallVer.VerStr() << ")";
        if (PkgLoop)
          clog << " (Only Correct Dependencies)";
        clog << endl;
     /* Because of the ordered list, most dependencies should be unpacked, 
        however if there is a loop (A depends on B, B depends on A) this will not 
        be the case, so check for dependencies before configuring. */
-    bool Bad = false;
-    for (DepIterator D = instVer.DependsList();
-       D.end() == false; )
-    {
-       // Compute a single dependency element (glob or)
-       pkgCache::DepIterator Start;
-       pkgCache::DepIterator End;
-       D.GlobOr(Start,End);
-       
-       if (End->Type == pkgCache::Dep::Depends) 
-           Bad = true;
-       // Check for dependanices that have not been unpacked, probably due to loops.
-       while (End->Type == pkgCache::Dep::Depends) {
-          PkgIterator DepPkg;
-          VerIterator InstallVer;
-          SPtrArray<Version *> VList = Start.AllTargets();
-          
-          // Check through each version of each package that could satisfy this dependancy
-        for (Version **I = VList; *I != 0; I++) {
-           VerIterator Ver(Cache,*I);
-           DepPkg = Ver.ParentPkg();
-           InstallVer = VerIterator(Cache,Cache[DepPkg].InstallVer);
-           // Check if the current version of the package is avalible and will satisfy this dependancy
-           if (DepPkg.CurrentVer() == Ver && List->IsNow(DepPkg) == true && 
-               !List->IsFlag(DepPkg,pkgOrderList::Removed) && DepPkg.State() == PkgIterator::NeedsNothing)
+    bool Bad = false, Changed = false;
+    do {
+       Changed = false;
+       for (DepIterator D = instVer.DependsList(); D.end() == false; )
+       {
+        // Compute a single dependency element (glob or)
+        pkgCache::DepIterator Start, End;
+        D.GlobOr(Start,End);
+        if (End->Type != pkgCache::Dep::Depends)
+           continue;
+        Bad = true;
+        // Search for dependencies which are unpacked but aren't configured yet (maybe loops)
+        for (DepIterator Cur = Start; true; ++Cur)
+        {
+           SPtrArray<Version *> VList = Cur.AllTargets();
+           for (Version **I = VList; *I != 0; ++I)
            {
-              Bad = false;
-              break;
-           }
-           
-           // Check if the version that is going to be installed will satisfy the dependancy
-           if (Cache[DepPkg].InstallVer == *I) {
-              if (List->IsFlag(DepPkg,pkgOrderList::UnPacked)) {
-                 if (List->IsFlag(DepPkg,pkgOrderList::Loop) && PkgLoop) {
-                   // This dependancy has already been dealt with by another SmartConfigure on Pkg
-                   Bad = false;
-                   break;
-                   } else if (List->IsFlag(Pkg,pkgOrderList::Loop)) {
-                   /* Check for a loop to prevent one forming
-                      If A depends on B and B depends on A, SmartConfigure will
-                      just hop between them if this is not checked. Dont remove the 
-                      loop flag after finishing however as loop is already set.
-                      This means that there is another SmartConfigure call for this 
-                      package and it will remove the loop flag */
-                    Bad = !SmartConfigure(DepPkg, Depth + 1);
-                 } else {
-                   /* Check for a loop to prevent one forming
-                      If A depends on B and B depends on A, SmartConfigure will
-                      just hop between them if this is not checked */
-                   List->Flag(Pkg,pkgOrderList::Loop);
-                   Bad = !SmartConfigure(DepPkg, Depth + 1);
-                   List->RmFlag(Pkg,pkgOrderList::Loop);
-                 }
-                 // If SmartConfigure was succesfull, Bad is false, so break
-                 if (!Bad) break;
-              } else if (List->IsFlag(DepPkg,pkgOrderList::Configured)) {
-                 Bad = false;
-                 break;
+              VerIterator Ver(Cache,*I);
+              PkgIterator DepPkg = Ver.ParentPkg();
+              // Check if the current version of the package is available and will satisfy this dependency
+              if (DepPkg.CurrentVer() == Ver && List->IsNow(DepPkg) == true &&
+                  List->IsFlag(DepPkg,pkgOrderList::Removed) == false &&
+                  DepPkg.State() == PkgIterator::NeedsNothing)
+              {
+                 Bad = false;
+                 break;
+              }
+              // Check if the version that is going to be installed will satisfy the dependency
+              if (Cache[DepPkg].InstallVer != *I)
+                 continue;
+              if (List->IsFlag(DepPkg,pkgOrderList::UnPacked))
+              {
+                 if (List->IsFlag(DepPkg,pkgOrderList::Loop) && PkgLoop)
+                 {
+                   // This dependency has already been dealt with by another SmartConfigure on Pkg
+                   Bad = false;
+                   break;
+                 }
+                 /* Check for a loop to prevent one forming
+                      If A depends on B and B depends on A, SmartConfigure will
+                      just hop between them if this is not checked. Dont remove the
+                      loop flag after finishing however as loop is already set.
+                      This means that there is another SmartConfigure call for this
+                      package and it will remove the loop flag */
+                 if (PkgLoop == false)
+                    List->Flag(Pkg,pkgOrderList::Loop);
+                 if (SmartConfigure(DepPkg, Depth + 1) == true)
+                 {
+                    Bad = false;
+                    if (List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
+                       Changed = true;
+                 }
+                 if (PkgLoop == false)
+                   List->RmFlag(Pkg,pkgOrderList::Loop);
+                 // If SmartConfigure was succesfull, Bad is false, so break
+                 if (Bad == false)
+                    break;
+              }
+              else if (List->IsFlag(DepPkg,pkgOrderList::Configured))
+              {
+                 Bad = false;
+                 break;
               }
            }
-        }
-        
-        /* If the dependany is still not satisfied, try, if possible, unpacking a package to satisfy it */
-        if (InstallVer != 0 && Bad) {
-           if (List->IsNow(DepPkg)) {
-              Bad = false;
-              if (List->IsFlag(Pkg,pkgOrderList::Loop))
+           if (Cur == End)
+              break;
+          }
+        if (Bad == false)
+           continue;
+        // Check for dependencies that have not been unpacked, probably due to loops.
+        for (DepIterator Cur = Start; true; ++Cur)
+        {
+           SPtrArray<Version *> VList = Cur.AllTargets();
+           for (Version **I = VList; *I != 0; ++I)
+           {
+              VerIterator Ver(Cache,*I);
+              PkgIterator DepPkg = Ver.ParentPkg();
+              // Check if the version that is going to be installed will satisfy the dependency
+              if (Cache[DepPkg].InstallVer != *I || List->IsNow(DepPkg) == false)
+                 continue;
+              if (PkgLoop == true)
               {
                  if (Debug)
                     std::clog << OutputInDepth(Depth) << "Package " << Pkg << " loops in SmartConfigure" << std::endl;
+                 Bad = false;
+                 break;
               }
               else
               {
-                 List->Flag(Pkg,pkgOrderList::Loop);
                  if (Debug)
-                    clog << OutputInDepth(Depth) << "Unpacking " << DepPkg.Name() << " to avoid loop" << endl;
-                 SmartUnPack(DepPkg, true, Depth + 1);
-                 List->RmFlag(Pkg,pkgOrderList::Loop);
 -                   cout << OutputInDepth(Depth) << "Unpacking " << DepPkg.FullName() << " to avoid loop " << Cur << endl;
++                   clog << OutputInDepth(Depth) << "Unpacking " << DepPkg.FullName() << " to avoid loop " << Cur << endl;
+                 if (PkgLoop == false)
+                    List->Flag(Pkg,pkgOrderList::Loop);
+                 if (SmartUnPack(DepPkg, true, Depth + 1) == true)
+                 {
+                    Bad = false;
+                    if (List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
+                       Changed = true;
+                 }
+                 if (PkgLoop == false)
+                    List->RmFlag(Pkg,pkgOrderList::Loop);
+                 if (Bad == false)
+                    break;
               }
            }
+           if (Cur == End)
+              break;
         }
-        
-        if (Start==End) {
-           if (Bad && Debug && List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
-                 std::clog << OutputInDepth(Depth) << "Could not satisfy dependencies for " << Pkg.Name() << std::endl;
-           break;
-        } else {
-             Start++;
-          }
+        if (Bad == true && Changed == false && Debug == true)
+           std::clog << OutputInDepth(Depth) << "Could not satisfy " << Start << std::endl;
        }
-    }
+    } while (Changed == true);
     
     if (Bad) {
        if (Debug)
-          _error->Warning(_("Could not configure '%s'. "),Pkg.Name());
+          _error->Warning(_("Could not configure '%s'. "),Pkg.FullName().c_str());
        return false;
     }
     
     static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
  
     if (List->IsFlag(Pkg,pkgOrderList::Configured)) 
-       return _error->Error("Internal configure error on '%s'.", Pkg.Name());
+       return _error->Error("Internal configure error on '%s'.", Pkg.FullName().c_str());
  
     if (ConfigurePkgs == true && Configure(Pkg) == false)
        return false;
  
     // Sanity Check
     if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
-       return _error->Error(_("Could not configure '%s'. "),Pkg.Name());
+       return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str());
  
     return true;
  }
@@@ -508,7 -540,7 +540,7 @@@ bool pkgPackageManager::EarlyRemove(Pkg
                                "removing the essential package %s due to a "
                                "Conflicts/Pre-Depends loop. This is often bad, "
                                "but if you really want to do it, activate the "
-                               "APT::Force-LoopBreak option."),Pkg.Name());
+                               "APT::Force-LoopBreak option."),Pkg.FullName().c_str());
     }
     
     bool Res = SmartRemove(Pkg);
@@@ -544,221 -576,252 +576,252 @@@ bool pkgPackageManager::SmartUnPack(Pkg
     bool PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop);
  
     if (Debug) {
-       clog << OutputInDepth(Depth) << "SmartUnPack " << Pkg.Name();
+       clog << OutputInDepth(Depth) << "SmartUnPack " << Pkg.FullName();
        VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer);
        if (Pkg.CurrentVer() == 0)
 -        cout << " (install version " << InstallVer.VerStr() << ")";
 +        clog << " (install version " << InstallVer.VerStr() << ")";
        else
 -        cout << " (replace version " << Pkg.CurrentVer().VerStr() << " with " << InstallVer.VerStr() << ")";
 +        clog << " (replace version " << Pkg.CurrentVer().VerStr() << " with " << InstallVer.VerStr() << ")";
        if (PkgLoop)
 -        cout << " (Only Perform PreUnpack Checks)";
 -      cout << endl;
 +        clog << " (Only Perform PreUnpack Checks)";
 +      clog << endl;
     }
  
     VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
  
     /* PreUnpack Checks: This loop checks and attempts to rectify and problems that would prevent the package being unpacked.
-       It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should 
+       It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should
        avoid configuration (calling SmartUnpack with Immediate=true), this is because when unpacking some packages with
-       complex dependancy structures, trying to configure some packages while breaking the loops can complicate things . 
-       This will be either dealt with if the package is configured as a dependency of Pkg (if and when Pkg is configured), 
+       complex dependancy structures, trying to configure some packages while breaking the loops can complicate things .
+       This will be either dealt with if the package is configured as a dependency of Pkg (if and when Pkg is configured),
        or by the ConfigureAll call at the end of the for loop in OrderInstall. */
-    for (DepIterator D = instVer.DependsList();
-       D.end() == false; )
-    {
-       // Compute a single dependency element (glob or)
-       pkgCache::DepIterator Start;
-       pkgCache::DepIterator End;
-       D.GlobOr(Start,End);
-       
-       while (End->Type == pkgCache::Dep::PreDepends)
+    bool Changed = false;
+    do {
+       Changed = false;
+       for (DepIterator D = instVer.DependsList(); D.end() == false; )
        {
-        if (Debug)
-           clog << OutputInDepth(Depth) << "PreDepends order for " << Pkg.Name() << std::endl;
-        // Look for possible ok targets.
-        SPtrArray<Version *> VList = Start.AllTargets();
-        bool Bad = true;
-        for (Version **I = VList; *I != 0 && Bad == true; I++)
-        {
-           VerIterator Ver(Cache,*I);
-           PkgIterator Pkg = Ver.ParentPkg();
-           
-           // See if the current version is ok
-           if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true && 
-               Pkg.State() == PkgIterator::NeedsNothing)
+        // Compute a single dependency element (glob or)
+        pkgCache::DepIterator Start, End;
+        D.GlobOr(Start,End);
+        if (End->Type == pkgCache::Dep::PreDepends)
+          {
+           bool Bad = true;
+           if (Debug)
+              clog << OutputInDepth(Depth) << "PreDepends order for " << Pkg.FullName() << std::endl;
+           // Look for easy targets: packages that are already okay
+           for (DepIterator Cur = Start; Bad == true; ++Cur)
            {
-              Bad = false;
-              if (Debug)
-                 clog << OutputInDepth(Depth) << "Found ok package " << Pkg.Name() << endl;
-              continue;
-           }
-        }
-        
-        // Look for something that could be configured.
-        for (Version **I = VList; *I != 0 && Bad == true; I++)
-        {
-           VerIterator Ver(Cache,*I);
-           PkgIterator Pkg = Ver.ParentPkg();
-           
-           // Not the install version 
-           if (Cache[Pkg].InstallVer != *I || 
-               (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
-              continue;
-              
-           if (List->IsFlag(Pkg,pkgOrderList::Configured)) {
-              Bad = false;
-              continue;
+              SPtrArray<Version *> VList = Start.AllTargets();
+              for (Version **I = VList; *I != 0; ++I)
+              {
+                 VerIterator Ver(Cache,*I);
+                 PkgIterator Pkg = Ver.ParentPkg();
+                 // See if the current version is ok
+                 if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
+                     Pkg.State() == PkgIterator::NeedsNothing)
+                 {
+                    Bad = false;
+                    if (Debug)
+                       clog << OutputInDepth(Depth) << "Found ok package " << Pkg.FullName() << endl;
+                    break;
+                 }
+              }
+              if (Cur == End)
+                 break;
            }
  
-             // check if it needs unpack or if if configure is enough
-             if (!List->IsFlag(Pkg,pkgOrderList::UnPacked))
-             {
-                if (Debug)
-                   clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << Pkg.Name() << endl;
-                // SmartUnpack with the ImmediateFlag to ensure its really ready
-                Bad = !SmartUnPack(Pkg, true, Depth + 1);
-             } else {
-                if (Debug)
-                   clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << Pkg.Name() << endl;
-                Bad = !SmartConfigure(Pkg, Depth + 1);
-             }
-          }
+           // Look for something that could be configured.
+           for (DepIterator Cur = Start; Bad == true; ++Cur)
+           {
+              SPtrArray<Version *> VList = Start.AllTargets();
+              for (Version **I = VList; *I != 0; ++I)
+              {
+                 VerIterator Ver(Cache,*I);
+                 PkgIterator Pkg = Ver.ParentPkg();
  
-        /* If this or element did not match then continue on to the
-           next or element until a matching element is found */
-        if (Bad == true)
-        {
-           // This triggers if someone make a pre-depends/depend loop.
-           if (Start == End)
-              return _error->Error("Couldn't configure pre-depend %s for %s, "
-                                   "probably a dependency cycle.",
-                                   End.TargetPkg().Name(),Pkg.Name());
-           ++Start;
-        }
-        else 
-           break;
-       }
-       
-       if (End->Type == pkgCache::Dep::Conflicts || 
-         End->Type == pkgCache::Dep::Obsoletes)
-       {
-        /* Look for conflicts. Two packages that are both in the install
-           state cannot conflict so we don't check.. */
-        SPtrArray<Version *> VList = End.AllTargets();
-        for (Version **I = VList; *I != 0; I++)
-        {
-           VerIterator Ver(Cache,*I);
-           PkgIterator ConflictPkg = Ver.ParentPkg();
-           VerIterator InstallVer(Cache,Cache[ConflictPkg].InstallVer);
-           
-           // See if the current version is conflicting
-           if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
-           { 
-              clog << OutputInDepth(Depth) << Pkg.Name() << " conflicts with " << ConflictPkg.Name() << endl;
-              /* If a loop is not present or has not yet been detected, attempt to unpack packages 
-                 to resolve this conflict. If there is a loop present, remove packages to resolve this conflict */
-              if (!List->IsFlag(ConflictPkg,pkgOrderList::Loop)) {
-                 if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0) {
-                     if (Debug)
-                         clog << OutputInDepth(Depth) << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.Name() << " to prevent conflict" << endl;
-                       List->Flag(Pkg,pkgOrderList::Loop);
-                     SmartUnPack(ConflictPkg,false, Depth + 1);
-                     // Remove loop to allow it to be used later if needed
-                     List->RmFlag(Pkg,pkgOrderList::Loop);
-                   } else {
-                       if (EarlyRemove(ConflictPkg) == false)
-                          return _error->Error("Internal Error, Could not early remove %s",ConflictPkg.Name());
-                   }
-              } else {
-                 if (!List->IsFlag(ConflictPkg,pkgOrderList::Removed)) {
-                     if (Debug)
-                          clog << OutputInDepth(Depth) << "Because of conficts knot, removing " << ConflictPkg.Name() << " to conflict violation" << endl;
-                     if (EarlyRemove(ConflictPkg) == false)
-                           return _error->Error("Internal Error, Could not early remove %s",ConflictPkg.Name());
-                 }
+                 // Not the install version
+                 if (Cache[Pkg].InstallVer != *I ||
+                     (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
+                    continue;
+                 if (List->IsFlag(Pkg,pkgOrderList::Configured))
+                 {
+                    Bad = false;
+                    break;
+                 }
+                 // check if it needs unpack or if if configure is enough
+                 if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
+                 {
+                    if (Debug)
+                       clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << Pkg.FullName() << endl;
+                    // SmartUnpack with the ImmediateFlag to ensure its really ready
+                    if (SmartUnPack(Pkg, true, Depth + 1) == true)
+                    {
+                       Bad = false;
+                       if (List->IsFlag(Pkg,pkgOrderList::Loop) == false)
+                          Changed = true;
+                       break;
+                    }
+                 }
+                 else
+                 {
+                    if (Debug)
+                       clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << Pkg.FullName() << endl;
+                    if (SmartConfigure(Pkg, Depth + 1) == true)
+                    {
+                       Bad = false;
+                       if (List->IsFlag(Pkg,pkgOrderList::Loop) == false)
+                          Changed = true;
+                       break;
+                    }
+                 }
               }
            }
+           if (Bad == true)
+           {
+              if (Start == End)
+                 return _error->Error("Couldn't configure pre-depend %s for %s, "
+                                       "probably a dependency cycle.",
+                                       End.TargetPkg().FullName().c_str(),Pkg.FullName().c_str());
+           }
+           else
+              continue;
         }
-       }
-       
-       // Check for breaks
-       if (End->Type == pkgCache::Dep::DpkgBreaks) {
-          SPtrArray<Version *> VList = End.AllTargets();
-        for (Version **I = VList; *I != 0; I++)
+        else if (End->Type == pkgCache::Dep::Conflicts ||
+                 End->Type == pkgCache::Dep::Obsoletes)
         {
-           VerIterator Ver(Cache,*I);
-           PkgIterator BrokenPkg = Ver.ParentPkg();
-           if (BrokenPkg.CurrentVer() != Ver)
+           /* Look for conflicts. Two packages that are both in the install
+              state cannot conflict so we don't check.. */
+           SPtrArray<Version *> VList = End.AllTargets();
+           for (Version **I = VList; *I != 0; I++)
            {
-              if (Debug)
-                 std::clog << OutputInDepth(Depth) << "  Ignore not-installed version " << Ver.VerStr() << " of " << Pkg.FullName() << " for " << End << std::endl;
-              continue;
-           }
+              VerIterator Ver(Cache,*I);
+              PkgIterator ConflictPkg = Ver.ParentPkg();
+              VerIterator InstallVer(Cache,Cache[ConflictPkg].InstallVer);
  
-           // Check if it needs to be unpacked
-           if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
-               List->IsNow(BrokenPkg)) {
-              if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) && PkgLoop) {
-                 // This dependancy has already been dealt with by another SmartUnPack on Pkg
-                 break;
-              } else {
-                 // Found a break, so see if we can unpack the package to avoid it
-                 // but do not set loop if another SmartUnPack already deals with it
-                 VerIterator InstallVer(Cache,Cache[BrokenPkg].InstallVer);
-                 bool circle = false;
-                 for (pkgCache::DepIterator D = InstallVer.DependsList(); D.end() == false; ++D)
+              // See if the current version is conflicting
+              if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
+              {
 -                cout << OutputInDepth(Depth) << Pkg.FullName() << " conflicts with " << ConflictPkg.FullName() << endl;
++                clog << OutputInDepth(Depth) << Pkg.FullName() << " conflicts with " << ConflictPkg.FullName() << endl;
+                 /* If a loop is not present or has not yet been detected, attempt to unpack packages
+                    to resolve this conflict. If there is a loop present, remove packages to resolve this conflict */
+                 if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) == false)
                  {
-                    if (D->Type != pkgCache::Dep::PreDepends)
-                       continue;
-                    SPtrArray<Version *> VL = D.AllTargets();
-                    for (Version **I = VL; *I != 0; ++I)
+                    if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0)
                     {
-                       VerIterator V(Cache,*I);
-                       PkgIterator P = V.ParentPkg();
-                       // we are checking for installation as an easy 'protection' against or-groups and (unchosen) providers
-                       if (P->CurrentVer == 0 || P != Pkg || (P.CurrentVer() != V && Cache[P].InstallVer != V))
-                          continue;
-                       circle = true;
-                       break;
+                       if (Debug)
 -                         cout << OutputInDepth(Depth) << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to prevent conflict" << endl;
++                         clog << OutputInDepth(Depth) << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to prevent conflict" << endl;
+                       List->Flag(Pkg,pkgOrderList::Loop);
+                       if (SmartUnPack(ConflictPkg,false, Depth + 1) == true)
+                          if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) == false)
+                             Changed = true;
+                       // Remove loop to allow it to be used later if needed
+                       List->RmFlag(Pkg,pkgOrderList::Loop);
                     }
-                    if (circle == true)
-                       break;
+                    else if (EarlyRemove(ConflictPkg) == false)
+                       return _error->Error("Internal Error, Could not early remove %s (1)",ConflictPkg.FullName().c_str());
                  }
-                 if (circle == true)
+                 else if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == false)
                  {
                     if (Debug)
-                       clog << OutputInDepth(Depth) << "  Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
-                    continue;
 -                      cout << OutputInDepth(Depth) << "Because of conficts knot, removing " << ConflictPkg.FullName() << " to conflict violation" << endl;
++                      clog << OutputInDepth(Depth) << "Because of conficts knot, removing " << ConflictPkg.FullName() << " to conflict violation" << endl;
+                    if (EarlyRemove(ConflictPkg) == false)
+                       return _error->Error("Internal Error, Could not early remove %s (2)",ConflictPkg.FullName().c_str());
+                 }
+              }
+           }
+        }
+        else if (End->Type == pkgCache::Dep::DpkgBreaks)
+        {
+           SPtrArray<Version *> VList = End.AllTargets();
+           for (Version **I = VList; *I != 0; ++I)
+           {
+              VerIterator Ver(Cache,*I);
+              PkgIterator BrokenPkg = Ver.ParentPkg();
+              if (BrokenPkg.CurrentVer() != Ver)
+              {
+                 if (Debug)
+                    std::clog << OutputInDepth(Depth) << "  Ignore not-installed version " << Ver.VerStr() << " of " << Pkg.FullName() << " for " << End << std::endl;
+                 continue;
+              }
+              // Check if it needs to be unpacked
+              if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
+                  List->IsNow(BrokenPkg))
+              {
+                 if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) && PkgLoop)
+                 {
+                    // This dependancy has already been dealt with by another SmartUnPack on Pkg
+                    break;
                  }
                  else
                  {
-                    if (Debug)
+                    // Found a break, so see if we can unpack the package to avoid it
+                    // but do not set loop if another SmartUnPack already deals with it
+                    // Also, avoid it if the package we would unpack pre-depends on this one
+                    VerIterator InstallVer(Cache,Cache[BrokenPkg].InstallVer);
+                    bool circle = false;
+                    for (pkgCache::DepIterator D = InstallVer.DependsList(); D.end() == false; ++D)
                     {
-                       clog << OutputInDepth(Depth) << "  Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
-                       if (PkgLoop == true)
-                          clog << " (Looping)";
-                       clog << std::endl;
+                       if (D->Type != pkgCache::Dep::PreDepends)
+                          continue;
+                       SPtrArray<Version *> VL = D.AllTargets();
+                       for (Version **I = VL; *I != 0; ++I)
+                       {
+                          VerIterator V(Cache,*I);
+                          PkgIterator P = V.ParentPkg();
+                          // we are checking for installation as an easy 'protection' against or-groups and (unchosen) providers
+                          if (P->CurrentVer == 0 || P != Pkg || (P.CurrentVer() != V && Cache[P].InstallVer != V))
+                             continue;
+                          circle = true;
+                          break;
+                       }
+                       if (circle == true)
+                          break;
+                    }
+                    if (circle == true)
+                    {
+                       if (Debug)
 -                         cout << OutputInDepth(Depth) << "  Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
++                         clog << OutputInDepth(Depth) << "  Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
+                       continue;
+                    }
+                    else
+                    {
+                       if (Debug)
+                       {
 -                         cout << OutputInDepth(Depth) << "  Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
++                         clog << OutputInDepth(Depth) << "  Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
+                          if (PkgLoop == true)
 -                            cout << " (Looping)";
 -                         cout << std::endl;
++                            clog << " (Looping)";
++                         clog << std::endl;
+                       }
+                       if (PkgLoop == false)
+                          List->Flag(Pkg,pkgOrderList::Loop);
+                       if (SmartUnPack(BrokenPkg, false, Depth + 1) == true)
+                       {
+                          if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) == false)
+                             Changed = true;
+                       }
+                       if (PkgLoop == false)
+                          List->RmFlag(Pkg,pkgOrderList::Loop);
                     }
-                    if (PkgLoop == false)
-                       List->Flag(Pkg,pkgOrderList::Loop);
-                    SmartUnPack(BrokenPkg, false, Depth + 1);
-                    if (PkgLoop == false)
-                       List->RmFlag(Pkg,pkgOrderList::Loop);
                  }
               }
-           } else {
               // Check if a package needs to be removed
-              if (Cache[BrokenPkg].Delete() == true && !List->IsFlag(BrokenPkg,pkgOrderList::Configured))
+              else if (Cache[BrokenPkg].Delete() == true && List->IsFlag(BrokenPkg,pkgOrderList::Configured) == false)
               {
                  if (Debug)
-                    clog << OutputInDepth(Depth) << "  Removing " << BrokenPkg.Name() << " to avoid " << End << endl;
 -                   cout << OutputInDepth(Depth) << "  Removing " << BrokenPkg.FullName() << " to avoid " << End << endl;
++                   clog << OutputInDepth(Depth) << "  Removing " << BrokenPkg.FullName() << " to avoid " << End << endl;
                  SmartRemove(BrokenPkg);
               }
            }
         }
        }
-    }
+    } while (Changed == true);
     
     // Check for reverse conflicts.
     if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
        // Perform immedate configuration of the package. 
           if (SmartConfigure(Pkg, Depth + 1) == false)
              _error->Warning(_("Could not perform immediate configuration on '%s'. "
-                "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),2);
+                "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.FullName().c_str(),2);
     }
     
     return true;
@@@ -855,11 -918,11 +918,11 @@@ pkgPackageManager::OrderResult pkgPacka
        {
           if (!List->IsFlag(Pkg,pkgOrderList::Configured) && !NoImmConfigure) {
              if (SmartConfigure(Pkg, 0) == false && Debug)
-                _error->Warning("Internal Error, Could not configure %s",Pkg.Name());
+                _error->Warning("Internal Error, Could not configure %s",Pkg.FullName().c_str());
              // FIXME: The above warning message might need changing
           } else {
            if (Debug == true)
-              clog << "Skipping already done " << Pkg.Name() << endl;
+              clog << "Skipping already done " << Pkg.FullName() << endl;
         }
         continue;
         
        if (List->IsMissing(Pkg) == true)
        {
         if (Debug == true)
-           clog << "Sequence completed at " << Pkg.Name() << endl;
+           clog << "Sequence completed at " << Pkg.FullName() << endl;
         if (DoneSomething == false)
         {
            _error->Error("Internal Error, ordering was unable to handle the media swap");
          Pkg.State() == pkgCache::PkgIterator::NeedsNothing &&
          (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
        {
-        _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.Name());
+        _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.FullName().c_str());
         return Failed;
        }
        
        if (List->IsFlag(*I,pkgOrderList::Configured) == false)
        {
         _error->Error("Internal error, packages left unconfigured. %s",
-                      PkgIterator(Cache,*I).Name());
+                      PkgIterator(Cache,*I).FullName().c_str());
         return Failed;
        }
     }
diff --combined debian/changelog
@@@ -1,9 -1,12 +1,16 @@@
 -apt (0.8.16~exp14) experimental; urgency=low
 +apt (0.8.16~exp14) UNRELEASED; urgency=low
  
++  [ Michael Vogt ]
 +  * apt-pkg/packagemanager.cc:
 +    - fix inconsistent clog/cout usage in the debug output
++  
+   [ David Kalnischkies ]
+   * apt-pkg/packagemanager.cc:
+     - recheck all dependencies if we changed a package in SmartConfigure
+       as this could break an earlier dependency (LP: #940396)
+     - recheck dependencies in SmartUnpack after a change, too
  
-  -- Michael Vogt <michael.vogt@ubuntu.com>  Wed, 07 Mar 2012 09:20:02 +0100
+  -- David Kalnischkies <kalnischkies@gmail.com>  Tue, 13 Mar 2012 12:38:35 +0100
  
  apt (0.8.16~exp13) experimental; urgency=low