]> git.saurik.com Git - apt.git/blobdiff - cmdline/apt-get.cc
check build-dep candidate if install is forbidden
[apt.git] / cmdline / apt-get.cc
index 94e078cb3a912baf02547606d6e05e2a91363adb..870c77280957dd85075844d49194b4dc312f95d2 100644 (file)
@@ -25,8 +25,7 @@
    ##################################################################### */
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
-#define _LARGEFILE_SOURCE
-#define _LARGEFILE64_SOURCE
+#include <config.h>
 
 #include <apt-pkg/aptconfiguration.h>
 #include <apt-pkg/error.h>
@@ -37,6 +36,7 @@
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/fileutl.h>
 #include <apt-pkg/clean.h>
 #include <apt-pkg/srcrecords.h>
 #include <apt-pkg/version.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/md5.h>
 #include <apt-pkg/versionmatch.h>
-
-#include <config.h>
-#include <apti18n.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/pkgrecords.h>
+#include <apt-pkg/indexfile.h>
 
 #include "acqprogress.h"
 
@@ -68,8 +69,7 @@
 #include <sys/wait.h>
 #include <sstream>
 
-#define statfs statfs64
-#define statvfs statvfs64
+#include <apti18n.h>
                                                                        /*}}}*/
 
 #define RAMFS_MAGIC     0x858458f6
@@ -254,6 +254,9 @@ bool ShowList(ostream &out,string Title,string List,string VersionsList)
  */
 void ShowBroken(ostream &out,CacheFile &Cache,bool Now)
 {
+   if (Cache->BrokenCount() == 0)
+      return;
+
    out << _("The following packages have unmet dependencies:") << endl;
    for (unsigned J = 0; J < Cache->Head().PackageCount; J++)
    {
@@ -368,7 +371,7 @@ void ShowBroken(ostream &out,CacheFile &Cache,bool Now)
            
            if (Start == End)
               break;
-           Start++;
+           ++Start;
         }       
       }            
    }   
@@ -542,7 +545,7 @@ bool ShowEssential(ostream &out,CacheFile &Cache)
         continue;
 
       // Print out any essential package depenendents that are to be removed
-      for (pkgCache::DepIterator D = I.CurrentVer().DependsList(); D.end() == false; D++)
+      for (pkgCache::DepIterator D = I.CurrentVer().DependsList(); D.end() == false; ++D)
       {
         // Skip everything but depends
         if (D->Type != pkgCache::Dep::PreDepends &&
@@ -579,7 +582,7 @@ void Stats(ostream &out,pkgDepCache &Dep)
    unsigned long Downgrade = 0;
    unsigned long Install = 0;
    unsigned long ReInstall = 0;
-   for (pkgCache::PkgIterator I = Dep.PkgBegin(); I.end() == false; I++)
+   for (pkgCache::PkgIterator I = Dep.PkgBegin(); I.end() == false; ++I)
    {
       if (Dep[I].NewInstall() == true)
         Install++;
@@ -628,20 +631,18 @@ public:
                explicitlyNamed = true;
        }
 
-       virtual void showTaskSelection(APT::PackageSet const &pkgset, string const &pattern) {
-               for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
-                       ioprintf(out, _("Note, selecting '%s' for task '%s'\n"),
-                                Pkg.FullName(true).c_str(), pattern.c_str());
+       virtual void showTaskSelection(pkgCache::PkgIterator const &Pkg, string const &pattern) {
+               ioprintf(out, _("Note, selecting '%s' for task '%s'\n"),
+                               Pkg.FullName(true).c_str(), pattern.c_str());
                explicitlyNamed = false;
        }
-       virtual void showRegExSelection(APT::PackageSet const &pkgset, string const &pattern) {
-               for (APT::PackageSet::const_iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
-                       ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
-                                Pkg.FullName(true).c_str(), pattern.c_str());
+       virtual void showRegExSelection(pkgCache::PkgIterator const &Pkg, string const &pattern) {
+               ioprintf(out, _("Note, selecting '%s' for regex '%s'\n"),
+                               Pkg.FullName(true).c_str(), pattern.c_str());
                explicitlyNamed = false;
        }
        virtual void showSelectedVersion(pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const Ver,
-                                string const &ver, bool const &verIsRel) {
+                                string const &ver, bool const verIsRel) {
                if (ver == Ver.VerStr())
                        return;
                selectedByRelease.push_back(make_pair(Ver, ver));
@@ -662,22 +663,22 @@ public:
                                        pkgCache::PkgIterator Pkg = I.OwnerPkg();
 
                                        if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer()) {
-                                               out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
+                                               c1out << "  " << Pkg.FullName(true) << " " << I.OwnerVer().VerStr();
                                                if (Cache[Pkg].Install() == true && Cache[Pkg].NewInstall() == false)
-                                                       out << _(" [Installed]");
-                                               out << endl;
+                                                       c1out << _(" [Installed]");
+                                               c1out << endl;
                                                ++provider;
                                        }
                                }
                                // if we found no candidate which provide this package, show non-candidates
                                if (provider == 0)
-                                       for (I = Pkg.ProvidesList(); I.end() == false; I++)
-                                               out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
+                                       for (I = Pkg.ProvidesList(); I.end() == false; ++I)
+                                               c1out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
                                                    << _(" [Not candidate version]") << endl;
                                else
                                        out << _("You should explicitly select one to install.") << endl;
                        } else {
-                               ioprintf(out,
+                               ioprintf(c1out,
                                        _("Package %s is not available, but is referred to by another package.\n"
                                          "This may mean that the package is missing, has been obsoleted, or\n"
                                          "is only available from another source\n"),Pkg.FullName(true).c_str());
@@ -687,7 +688,7 @@ public:
                                SPtrArray<bool> Seen = new bool[Cache.GetPkgCache()->Head().PackageCount];
                                memset(Seen,0,Cache.GetPkgCache()->Head().PackageCount*sizeof(*Seen));
                                for (pkgCache::DepIterator Dep = Pkg.RevDependsList();
-                                    Dep.end() == false; Dep++) {
+                                    Dep.end() == false; ++Dep) {
                                        if (Dep->Type != pkgCache::Dep::Replaces)
                                                continue;
                                        if (Seen[Dep.ParentPkg()->ID] == true)
@@ -696,9 +697,9 @@ public:
                                        List += Dep.ParentPkg().FullName(true) + " ";
                                        //VersionsList += string(Dep.ParentPkg().CurVersion) + "\n"; ???
                                }
-                               ShowList(out,_("However the following packages replace it:"),List,VersionsList);
+                               ShowList(c1out,_("However the following packages replace it:"),List,VersionsList);
                        }
-                       out << std::endl;
+                       c1out << std::endl;
                }
                return false;
        }
@@ -707,7 +708,7 @@ public:
                APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::CANDIDATE);
                if (verset.empty() == false)
                        return *(verset.begin());
-               if (ShowError == true) {
+               else if (ShowError == true) {
                        _error->Error(_("Package '%s' has no installation candidate"),Pkg.FullName(true).c_str());
                        virtualPkgs.insert(Pkg);
                }
@@ -715,11 +716,32 @@ public:
        }
 
        virtual pkgCache::VerIterator canNotFindNewestVer(pkgCacheFile &Cache, pkgCache::PkgIterator const &Pkg) {
-               APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::NEWEST);
-               if (verset.empty() == false)
-                       return *(verset.begin());
-               if (ShowError == true)
-                       ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
+               if (Pkg->ProvidesList != 0)
+               {
+                       APT::VersionSet const verset = tryVirtualPackage(Cache, Pkg, APT::VersionSet::NEWEST);
+                       if (verset.empty() == false)
+                               return *(verset.begin());
+                       if (ShowError == true)
+                               ioprintf(out, _("Virtual packages like '%s' can't be removed\n"), Pkg.FullName(true).c_str());
+               }
+               else
+               {
+                       pkgCache::GrpIterator Grp = Pkg.Group();
+                       pkgCache::PkgIterator P = Grp.PackageList();
+                       for (; P.end() != true; P = Grp.NextPkg(P))
+                       {
+                               if (P == Pkg)
+                                       continue;
+                               if (P->CurrentVer != 0) {
+                                       // TRANSLATORS: Note, this is not an interactive question
+                                       ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
+                                                Pkg.FullName(true).c_str(), P.FullName(true).c_str());
+                                       break;
+                               }
+                       }
+                       if (P.end() == true)
+                               ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
+               }
                return pkgCache::VerIterator(Cache, 0);
        }
 
@@ -744,6 +766,19 @@ public:
                                Prov = PPkg;
                                found_one = true;
                        } else if (PPkg != Prov) {
+                               // same group, so it's a foreign package
+                               if (PPkg->Group == Prov->Group) {
+                                       // do we already have the requested arch?
+                                       if (strcmp(Pkg.Arch(), Prov.Arch()) == 0 ||
+                                           strcmp(Prov.Arch(), "all") == 0 ||
+                                           unlikely(strcmp(PPkg.Arch(), Prov.Arch()) == 0)) // packages have only on candidate, but just to be sure
+                                               continue;
+                                       // see which architecture we prefer more and switch to it
+                                       std::vector<std::string> archs = APT::Configuration::getArchitectures();
+                                       if (std::find(archs.begin(), archs.end(), PPkg.Arch()) < std::find(archs.begin(), archs.end(), Prov.Arch()))
+                                               Prov = PPkg;
+                                       continue;
+                               }
                                found_one = false; // we found at least two
                                break;
                        }
@@ -769,7 +804,7 @@ struct TryToInstall {
    unsigned long AutoMarkChanged;
    APT::PackageSet doAutoInstallLater;
 
-   TryToInstall(pkgCacheFile &Cache, pkgProblemResolver *PM, bool const &FixBroken) : Cache(&Cache), Fix(PM),
+   TryToInstall(pkgCacheFile &Cache, pkgProblemResolver *PM, bool const FixBroken) : Cache(&Cache), Fix(PM),
                        FixBroken(FixBroken), AutoMarkChanged(0) {};
 
    void operator() (pkgCache::VerIterator const &Ver) {
@@ -874,9 +909,7 @@ struct TryToInstall {
 struct TryToRemove {
    pkgCacheFile* Cache;
    pkgProblemResolver* Fix;
-   bool FixBroken;
    bool PurgePkgs;
-   unsigned long AutoMarkChanged;
 
    TryToRemove(pkgCacheFile &Cache, pkgProblemResolver *PM) : Cache(&Cache), Fix(PM),
                                PurgePkgs(_config->FindB("APT::Get::Purge", false)) {};
@@ -895,7 +928,23 @@ struct TryToRemove {
       if ((Pkg->CurrentVer == 0 && PurgePkgs == false) ||
          (PurgePkgs == true && Pkg->CurrentState == pkgCache::State::NotInstalled))
       {
-        ioprintf(c1out,_("Package %s is not installed, so not removed\n"),Pkg.FullName(true).c_str());
+        pkgCache::GrpIterator Grp = Pkg.Group();
+        pkgCache::PkgIterator P = Grp.PackageList();
+        for (; P.end() != true; P = Grp.NextPkg(P))
+        {
+           if (P == Pkg)
+              continue;
+           if (P->CurrentVer != 0 || (PurgePkgs == true && P->CurrentState != pkgCache::State::NotInstalled))
+           {
+              // TRANSLATORS: Note, this is not an interactive question
+              ioprintf(c1out,_("Package '%s' is not installed, so not removed. Did you mean '%s'?\n"),
+                       Pkg.FullName(true).c_str(), P.FullName(true).c_str());
+              break;
+           }
+        }
+        if (P.end() == true)
+           ioprintf(c1out,_("Package '%s' is not installed, so not removed\n"),Pkg.FullName(true).c_str());
+
         // MarkInstall refuses to install packages on hold
         Pkg->SelectedState = pkgCache::State::Hold;
       }
@@ -928,7 +977,7 @@ void CacheFile::Sort()
    List = new pkgCache::Package *[Cache->Head().PackageCount];
    memset(List,0,sizeof(*List)*Cache->Head().PackageCount);
    pkgCache::PkgIterator I = Cache->PkgBegin();
-   for (;I.end() != true; I++)
+   for (;I.end() != true; ++I)
       List[I->ID] = I;
 
    SortCache = *this;
@@ -960,7 +1009,7 @@ bool CacheFile::CheckDeps(bool AllowBroken)
       if ((DCache->PolicyBrokenCount() > 0))
       {
         // upgrade all policy-broken packages with ForceImportantDeps=True
-        for (pkgCache::PkgIterator I = Cache->PkgBegin(); !I.end(); I++)
+        for (pkgCache::PkgIterator I = Cache->PkgBegin(); !I.end(); ++I)
            if ((*DCache)[I].NowPolicyBroken() == true) 
               DCache->MarkInstall(I,true,0, false, true);
       }
@@ -1051,7 +1100,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
    if (_config->FindB("APT::Get::Purge",false) == true)
    {
       pkgCache::PkgIterator I = Cache->PkgBegin();
-      for (; I.end() == false; I++)
+      for (; I.end() == false; ++I)
       {
         if (I.Purge() == false && Cache[I].Mode == pkgDepCache::ModeDelete)
            Cache->MarkDelete(I,true);
@@ -1245,7 +1294,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
    if (_config->FindB("APT::Get::Print-URIs") == true)
    {
       pkgAcquire::UriIterator I = Fetcher.UriBegin();
-      for (; I != Fetcher.UriEnd(); I++)
+      for (; I != Fetcher.UriEnd(); ++I)
         cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' << 
               I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
       return true;
@@ -1269,7 +1318,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
         {
            if ((*I)->Local == true)
            {
-              I++;
+              ++I;
               continue;
            }
 
@@ -1289,7 +1338,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
       
       // Print out errors
       bool Failed = false;
-      for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); I++)
+      for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
       {
         if ((*I)->Status == pkgAcquire::Item::StatDone &&
             (*I)->Complete == true)
@@ -1369,7 +1418,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
        "all files have been overwritten by other packages:",
        "The following packages disappeared from your system as\n"
        "all files have been overwritten by other packages:", disappearedPkgs.size()), disappear, "");
-   c0out << _("Note: This is done automatic and on purpose by dpkg.") << std::endl;
+   c0out << _("Note: This is done automatically and on purpose by dpkg.") << std::endl;
 
    return true;
 }
@@ -1393,6 +1442,14 @@ bool TryToInstallBuildDep(pkgCache::PkgIterator Pkg,pkgCacheFile &Cache,
         return AllowFail;
    }
 
+   if (_config->FindB("Debug::BuildDeps",false) == true)
+   {
+      if (Remove == true)
+        cout << "  Trying to remove " << Pkg << endl;
+      else
+        cout << "  Trying to install " << Pkg << endl;
+   }
+
    if (Remove == true)
    {
       TryToRemove RemoveAction(Cache, &Fix);
@@ -1441,7 +1498,7 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
         // we have a default release, try to locate the pkg. we do it like
         // this because GetCandidateVer() will not "downgrade", that means
         // "apt-get source -t stable apt" won't work on a unstable system
-        for (pkgCache::VerIterator Ver = Pkg.VersionList();; Ver++)
+        for (pkgCache::VerIterator Ver = Pkg.VersionList();; ++Ver)
         {
            // try first only exact matches, later fuzzy matches
            if (Ver.end() == true)
@@ -1462,7 +1519,7 @@ pkgSrcRecords::Parser *FindSrc(const char *Name,pkgRecords &Recs,
               continue;
 
            for (pkgCache::VerFileIterator VF = Ver.FileList();
-                VF.end() == false; VF++) 
+                VF.end() == false; ++VF)
            {
               /* If this is the status file, and the current version is not the
                  version in the status file (ie it is not installed, or somesuch)
@@ -1614,7 +1671,7 @@ bool DoUpdate(CommandLine &CmdL)
         return false;
 
       pkgAcquire::UriIterator I = Fetcher.UriBegin();
-      for (; I != Fetcher.UriEnd(); I++)
+      for (; I != Fetcher.UriEnd(); ++I)
         cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' << 
               I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
       return true;
@@ -1624,10 +1681,14 @@ bool DoUpdate(CommandLine &CmdL)
    if (_config->FindB("APT::Get::Download",true) == true)
        ListUpdate(Stat, *List);
 
-   // Rebuild the cache.   
-   if (Cache.BuildCaches() == false)
-      return false;
-   
+   // Rebuild the cache.
+   if (_config->FindB("pkgCacheFile::Generate", true) == true)
+   {
+      pkgCacheFile::RemoveCaches();
+      if (Cache.BuildCaches() == false)
+        return false;
+   }
+
    return true;
 }
                                                                        /*}}}*/
@@ -1656,12 +1717,13 @@ bool DoAutomaticRemove(CacheFile &Cache)
    bool smallList = (hideAutoRemove == false &&
                strcasecmp(_config->Find("APT::Get::HideAutoRemove","").c_str(),"small") == 0);
 
-   string autoremovelist, autoremoveversions;
    unsigned long autoRemoveCount = 0;
    APT::PackageSet tooMuch;
+   APT::PackageList autoRemoveList;
    // look over the cache to see what can be removed
-   for (pkgCache::PkgIterator Pkg = Cache->PkgBegin(); ! Pkg.end(); ++Pkg)
+   for (unsigned J = 0; J < Cache->Head().PackageCount; ++J)
    {
+      pkgCache::PkgIterator Pkg(Cache,Cache.List[J]);
       if (Cache[Pkg].Garbage)
       {
         if(Pkg.CurrentVer() != 0 || Cache[Pkg].Install())
@@ -1678,67 +1740,75 @@ bool DoAutomaticRemove(CacheFile &Cache)
         }
         else
         {
+           if (hideAutoRemove == false && Cache[Pkg].Delete() == false)
+              autoRemoveList.insert(Pkg);
            // if the package is a new install and already garbage we don't need to
            // install it in the first place, so nuke it instead of show it
            if (Cache[Pkg].Install() == true && Pkg.CurrentVer() == 0)
            {
+              if (Pkg.CandVersion() != 0)
+                 tooMuch.insert(Pkg);
               Cache->MarkDelete(Pkg, false);
-              tooMuch.insert(Pkg);
            }
            // only show stuff in the list that is not yet marked for removal
-           else if(hideAutoRemove == false && Cache[Pkg].Delete() == false) 
-           {
+           else if(hideAutoRemove == false && Cache[Pkg].Delete() == false)
               ++autoRemoveCount;
-              // we don't need to fill the strings if we don't need them
-              if (smallList == false)
-              {
-                autoremovelist += Pkg.FullName(true) + " ";
-                autoremoveversions += string(Cache[Pkg].CandVersion) + "\n";
-              }
-           }
         }
       }
    }
 
    // we could have removed a new dependency of a garbage package,
    // so check if a reverse depends is broken and if so install it again.
-   if (tooMuch.empty() == false && Cache->BrokenCount() != 0)
+   if (tooMuch.empty() == false && (Cache->BrokenCount() != 0 || Cache->PolicyBrokenCount() != 0))
    {
       bool Changed;
       do {
         Changed = false;
-        for (APT::PackageSet::const_iterator P = tooMuch.begin();
-             P != tooMuch.end() && Changed == false; ++P)
+        for (APT::PackageSet::const_iterator Pkg = tooMuch.begin();
+             Pkg != tooMuch.end() && Changed == false; ++Pkg)
         {
-           for (pkgCache::DepIterator R = P.RevDependsList();
-                R.end() == false; ++R)
-           {
-              if (R->Type != pkgCache::Dep::Depends &&
-                  R->Type != pkgCache::Dep::PreDepends)
-                 continue;
-              pkgCache::PkgIterator N = R.ParentPkg();
-              if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
-                 continue;
-              if (Debug == true)
-                 std::clog << "Save " << P << " as another installed garbage package depends on it" << std::endl;
-              Cache->MarkInstall(P, false);
-              if(hideAutoRemove == false)
+           APT::PackageSet too;
+           too.insert(*Pkg);
+           for (pkgCache::PrvIterator Prv = Cache[Pkg].CandidateVerIter(Cache).ProvidesList();
+                Prv.end() == false; ++Prv)
+              too.insert(Prv.ParentPkg());
+           for (APT::PackageSet::const_iterator P = too.begin();
+                P != too.end() && Changed == false; ++P) {
+              for (pkgCache::DepIterator R = P.RevDependsList();
+                   R.end() == false; ++R)
               {
-                 ++autoRemoveCount;
-                 if (smallList == false)
-                 {
-                    autoremovelist += P.FullName(true) + " ";
-                    autoremoveversions += string(Cache[P].CandVersion) + "\n";
-                 }
+                 if (R.IsNegative() == true ||
+                     Cache->IsImportantDep(R) == false)
+                    continue;
+                pkgCache::PkgIterator N = R.ParentPkg();
+                if (N.end() == true || (N->CurrentVer == 0 && (*Cache)[N].Install() == false))
+                   continue;
+                if (Debug == true)
+                   std::clog << "Save " << Pkg << " as another installed garbage package depends on it" << std::endl;
+                Cache->MarkInstall(Pkg, false);
+                if (hideAutoRemove == false)
+                   ++autoRemoveCount;
+                tooMuch.erase(Pkg);
+                Changed = true;
+                break;
               }
-              tooMuch.erase(P);
-              Changed = true;
-              break;
            }
         }
       } while (Changed == true);
    }
 
+   std::string autoremovelist, autoremoveversions;
+   if (smallList == false && autoRemoveCount != 0)
+   {
+      for (APT::PackageList::const_iterator Pkg = autoRemoveList.begin(); Pkg != autoRemoveList.end(); ++Pkg)
+      {
+        if (Cache[Pkg].Garbage == false)
+           continue;
+        autoremovelist += Pkg.FullName(true) + " ";
+        autoremoveversions += string(Cache[Pkg].CandVersion) + "\n";
+      }
+   }
+
    // Now see if we had destroyed anything (if we had done anything)
    if (Cache->BrokenCount() != 0)
    {
@@ -1762,7 +1832,7 @@ bool DoAutomaticRemove(CacheFile &Cache)
       else
         ioprintf(c1out, P_("%lu package was automatically installed and is no longer required.\n",
                  "%lu packages were automatically installed and are no longer required.\n", autoRemoveCount), autoRemoveCount);
-      c1out << _("Use 'apt-get autoremove' to remove them.") << std::endl;
+      c1out << P_("Use 'apt-get autoremove' to remove it.", "Use 'apt-get autoremove' to remove them.", autoRemoveCount) << std::endl;
    }
    return true;
 }
@@ -1999,7 +2069,7 @@ bool DoInstall(CommandLine &CmdL)
               if(Start.TargetPkg().ProvidesList() != 0)
               {
                  pkgCache::PrvIterator I = Start.TargetPkg().ProvidesList();
-                 for (; I.end() == false; I++)
+                 for (; I.end() == false; ++I)
                  {
                     pkgCache::PkgIterator Pkg = I.OwnerPkg();
                     if (Cache[Pkg].CandidateVerIter(Cache) == I.OwnerVer() && 
@@ -2022,7 +2092,7 @@ bool DoInstall(CommandLine &CmdL)
 
               if (Start >= End)
                  break;
-              Start++;
+              ++Start;
            }
            
            if(foundInstalledInOrGroup == false)
@@ -2136,7 +2206,7 @@ bool DoDSelectUpgrade(CommandLine &CmdL)
 
    // Install everything with the install flag set
    pkgCache::PkgIterator I = Cache->PkgBegin();
-   for (;I.end() != true; I++)
+   for (;I.end() != true; ++I)
    {
       /* Install the package only if it is a new install, the autoupgrader
          will deal with the rest */
@@ -2146,7 +2216,7 @@ bool DoDSelectUpgrade(CommandLine &CmdL)
 
    /* Now install their deps too, if we do this above then order of
       the status file is significant for | groups */
-   for (I = Cache->PkgBegin();I.end() != true; I++)
+   for (I = Cache->PkgBegin();I.end() != true; ++I)
    {
       /* Install the package only if it is a new install, the autoupgrader
          will deal with the rest */
@@ -2155,7 +2225,7 @@ bool DoDSelectUpgrade(CommandLine &CmdL)
    }
    
    // Apply erasures now, they override everything else.
-   for (I = Cache->PkgBegin();I.end() != true; I++)
+   for (I = Cache->PkgBegin();I.end() != true; ++I)
    {
       // Remove packages 
       if (I->SelectedState == pkgCache::State::DeInstall ||
@@ -2172,7 +2242,7 @@ bool DoDSelectUpgrade(CommandLine &CmdL)
       // Hold back held packages.
       if (_config->FindB("APT::Ignore-Hold",false) == false)
       {
-        for (pkgCache::PkgIterator I = Cache->PkgBegin(); I.end() == false; I++)
+        for (pkgCache::PkgIterator I = Cache->PkgBegin(); I.end() == false; ++I)
         {
            if (I->SelectedState == pkgCache::State::Hold)
            {
@@ -2204,10 +2274,14 @@ bool DoDSelectUpgrade(CommandLine &CmdL)
 /* */
 bool DoClean(CommandLine &CmdL)
 {
+   std::string const archivedir = _config->FindDir("Dir::Cache::archives");
+   std::string const pkgcache = _config->FindFile("Dir::cache::pkgcache");
+   std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
+
    if (_config->FindB("APT::Get::Simulate") == true)
    {
-      cout << "Del " << _config->FindDir("Dir::Cache::archives") << "* " <<
-        _config->FindDir("Dir::Cache::archives") << "partial/*" << endl;
+      cout << "Del " << archivedir << "* " << archivedir << "partial/*"<< endl
+          << "Del " << pkgcache << " " << srcpkgcache << endl;
       return true;
    }
    
@@ -2215,14 +2289,17 @@ bool DoClean(CommandLine &CmdL)
    FileFd Lock;
    if (_config->FindB("Debug::NoLocking",false) == false)
    {
-      Lock.Fd(GetLock(_config->FindDir("Dir::Cache::Archives") + "lock"));
+      Lock.Fd(GetLock(archivedir + "lock"));
       if (_error->PendingError() == true)
         return _error->Error(_("Unable to lock the download directory"));
    }
    
    pkgAcquire Fetcher;
-   Fetcher.Clean(_config->FindDir("Dir::Cache::archives"));
-   Fetcher.Clean(_config->FindDir("Dir::Cache::archives") + "partial/");
+   Fetcher.Clean(archivedir);
+   Fetcher.Clean(archivedir + "partial/");
+
+   pkgCacheFile::RemoveCaches();
+
    return true;
 }
                                                                        /*}}}*/
@@ -2272,20 +2349,20 @@ bool DoDownload(CommandLine &CmdL)
       return false;
    
    APT::CacheSetHelper helper(c0out);
-   APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
-               CmdL.FileList + 1, APT::VersionSet::CANDIDATE, helper);
+   APT::VersionList verset = APT::VersionList::FromCommandLine(Cache,
+               CmdL.FileList + 1, APT::VersionList::CANDIDATE, helper);
 
    if (verset.empty() == true)
       return false;
 
    pkgAcquire Fetcher;
    AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
-   if (_config->FindB("APT::Get::Print-URIs") == true)
+   if (_config->FindB("APT::Get::Print-URIs") == false)
       Fetcher.Setup(&Stat);
 
    pkgRecords Recs(Cache);
    pkgSourceList *SrcList = Cache.GetSourceList();
-   for (APT::VersionSet::const_iterator Ver = verset.begin(); 
+   for (APT::VersionList::const_iterator Ver = verset.begin(); 
         Ver != verset.end(); 
         ++Ver) 
    {
@@ -2320,7 +2397,7 @@ bool DoDownload(CommandLine &CmdL)
    if (_config->FindB("APT::Get::Print-URIs") == true)
    {
       pkgAcquire::UriIterator I = Fetcher.UriBegin();
-      for (; I != Fetcher.UriEnd(); I++)
+      for (; I != Fetcher.UriEnd(); ++I)
         cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' << 
               I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
       return true;
@@ -2375,8 +2452,7 @@ bool DoSource(CommandLine &CmdL)
    // Create the download object
    AcqTextStatus Stat(ScreenWidth,_config->FindI("quiet",0));   
    pkgAcquire Fetcher;
-   if (Fetcher.Setup(&Stat) == false)
-      return false;
+   Fetcher.SetLog(&Stat);
 
    DscFile *Dsc = new DscFile[CmdL.FileSize()];
    
@@ -2423,7 +2499,7 @@ bool DoSource(CommandLine &CmdL)
                  Src.c_str(), vcs.c_str(), uri.c_str());
         if(vcs == "Bzr") 
            ioprintf(c1out,_("Please use:\n"
-                            "bzr get %s\n"
+                            "bzr branch %s\n"
                             "to retrieve the latest (possibly unreleased) "
                             "updates to the package.\n"),
                     uri.c_str());
@@ -2439,7 +2515,7 @@ bool DoSource(CommandLine &CmdL)
 
       // Load them into the fetcher
       for (vector<pkgSrcRecords::File>::const_iterator I = Lst.begin();
-          I != Lst.end(); I++)
+          I != Lst.end(); ++I)
       {
         // Try to guess what sort of file it is we are getting.
         if (I->Type == "dsc")
@@ -2541,7 +2617,7 @@ bool DoSource(CommandLine &CmdL)
    if (_config->FindB("APT::Get::Print-URIs") == true)
    {
       pkgAcquire::UriIterator I = Fetcher.UriBegin();
-      for (; I != Fetcher.UriEnd(); I++)
+      for (; I != Fetcher.UriEnd(); ++I)
         cout << '\'' << I->URI << "' " << flNotDir(I->Owner->DestFile) << ' ' << 
               I->Owner->FileSize << ' ' << I->Owner->HashSum() << endl;
       delete[] Dsc;
@@ -2557,7 +2633,7 @@ bool DoSource(CommandLine &CmdL)
 
    // Print error messages
    bool Failed = false;
-   for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); I++)
+   for (pkgAcquire::ItemIterator I = Fetcher.ItemsBegin(); I != Fetcher.ItemsEnd(); ++I)
    {
       if ((*I)->Status == pkgAcquire::Item::StatDone &&
          (*I)->Complete == true)
@@ -2586,7 +2662,7 @@ bool DoSource(CommandLine &CmdL)
    if (Process == 0)
    {
       bool const fixBroken = _config->FindB("APT::Get::Fix-Broken", false);
-      for (unsigned I = 0; I != J; I++)
+      for (unsigned I = 0; I != J; ++I)
       {
         string Dir = Dsc[I].Package + '-' + Cache->VS().UpstreamVersion(Dsc[I].Version.c_str());
         
@@ -2622,12 +2698,17 @@ bool DoSource(CommandLine &CmdL)
         // Try to compile it with dpkg-buildpackage
         if (_config->FindB("APT::Get::Compile",false) == true)
         {
+           string buildopts = _config->Find("APT::Get::Host-Architecture");
+           if (buildopts.empty() == false)
+              buildopts = "-a " + buildopts + " ";
+           buildopts.append(_config->Find("DPkg::Build-Options","-b -uc"));
+
            // Call dpkg-buildpackage
            char S[500];
            snprintf(S,sizeof(S),"cd %s && %s %s",
                     Dir.c_str(),
                     _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
-                    _config->Find("DPkg::Build-Options","-b -uc").c_str());
+                    buildopts.c_str());
            
            if (system(S) != 0)
            {
@@ -2689,8 +2770,19 @@ bool DoBuildDep(CommandLine &CmdL)
    if (Fetcher.Setup(&Stat) == false)
       return false;
 
+   bool StripMultiArch;
+   string hostArch = _config->Find("APT::Get::Host-Architecture");
+   if (hostArch.empty() == false)
+   {
+      std::vector<std::string> archs = APT::Configuration::getArchitectures();
+      if (std::find(archs.begin(), archs.end(), hostArch) == archs.end())
+        return _error->Error(_("No architecture information available for %s. See apt.conf(5) APT::Architectures for setup"), hostArch.c_str());
+      StripMultiArch = false;
+   }
+   else
+      StripMultiArch = true;
+
    unsigned J = 0;
-   bool const StripMultiArch = APT::Configuration::getArchitectures().size() <= 1;
    for (const char **I = CmdL.FileList + 1; *I != 0; I++, J++)
    {
       string Src;
@@ -2700,8 +2792,18 @@ bool DoBuildDep(CommandLine &CmdL)
             
       // Process the build-dependencies
       vector<pkgSrcRecords::Parser::BuildDepRec> BuildDeps;
-      if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch) == false)
-       return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
+      // FIXME: Can't specify architecture to use for [wildcard] matching, so switch default arch temporary
+      if (hostArch.empty() == false)
+      {
+        std::string nativeArch = _config->Find("APT::Architecture");
+        _config->Set("APT::Architecture", hostArch);
+        bool Success = Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch);
+        _config->Set("APT::Architecture", nativeArch);
+        if (Success == false)
+           return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
+      }
+      else if (Last->BuildDepends(BuildDeps, _config->FindB("APT::Get::Arch-Only", false), StripMultiArch) == false)
+           return _error->Error(_("Unable to get build-dependency information for %s"),Src.c_str());
    
       // Also ensure that build-essential packages are present
       Configuration::Item const *Opts = _config->Tree("APT::Build-Essential");
@@ -2719,22 +2821,32 @@ bool DoBuildDep(CommandLine &CmdL)
         BuildDeps.push_back(rec);
       }
 
-      if (BuildDeps.size() == 0)
+      if (BuildDeps.empty() == true)
       {
         ioprintf(c1out,_("%s has no build depends.\n"),Src.c_str());
         continue;
       }
-      
+
       // Install the requested packages
       vector <pkgSrcRecords::Parser::BuildDepRec>::iterator D;
       pkgProblemResolver Fix(Cache);
       bool skipAlternatives = false; // skip remaining alternatives in an or group
-      for (D = BuildDeps.begin(); D != BuildDeps.end(); D++)
+      for (D = BuildDeps.begin(); D != BuildDeps.end(); ++D)
       {
          bool hasAlternatives = (((*D).Op & pkgCache::Dep::Or) == pkgCache::Dep::Or);
 
          if (skipAlternatives == true)
          {
+            /*
+             * if there are alternatives, we've already picked one, so skip
+             * the rest
+             *
+             * TODO: this means that if there's a build-dep on A|B and B is
+             * installed, we'll still try to install A; more importantly,
+             * if A is currently broken, we cannot go back and try B. To fix 
+             * this would require we do a Resolve cycle for each package we 
+             * add to the install list. Ugh
+             */
             if (!hasAlternatives)
                skipAlternatives = false; // end of or group
             continue;
@@ -2743,27 +2855,143 @@ bool DoBuildDep(CommandLine &CmdL)
          if ((*D).Type == pkgSrcRecords::Parser::BuildConflict ||
             (*D).Type == pkgSrcRecords::Parser::BuildConflictIndep)
          {
-            pkgCache::PkgIterator Pkg = Cache->FindPkg((*D).Package);
+            pkgCache::GrpIterator Grp = Cache->FindGrp((*D).Package);
             // Build-conflicts on unknown packages are silently ignored
-            if (Pkg.end() == true)
+            if (Grp.end() == true)
                continue;
 
-            pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
-
-            /* 
-             * Remove if we have an installed version that satisfies the 
-             * version criteria
-             */
-            if (IV.end() == false && 
-                Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
-               TryToInstallBuildDep(Pkg,Cache,Fix,true,false);
+           for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
+           {
+              pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
+              /*
+               * Remove if we have an installed version that satisfies the
+               * version criteria
+               */
+              if (IV.end() == false &&
+                  Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
+                 TryToInstallBuildDep(Pkg,Cache,Fix,true,false);
+           }
          }
         else // BuildDep || BuildDepIndep
          {
-           pkgCache::PkgIterator Pkg = Cache->FindPkg((*D).Package);
             if (_config->FindB("Debug::BuildDeps",false) == true)
                  cout << "Looking for " << (*D).Package << "...\n";
 
+           pkgCache::PkgIterator Pkg;
+
+           // Cross-Building?
+           if (StripMultiArch == false && D->Type != pkgSrcRecords::Parser::BuildDependIndep)
+           {
+              size_t const colon = D->Package.find(":");
+              if (colon != string::npos &&
+                  (strcmp(D->Package.c_str() + colon, ":any") == 0 || strcmp(D->Package.c_str() + colon, ":native") == 0))
+                 Pkg = Cache->FindPkg(D->Package.substr(0,colon));
+              else
+                 Pkg = Cache->FindPkg(D->Package);
+
+              // a bad version either is invalid or doesn't satify dependency
+              #define BADVER(Ver) (Ver.end() == true || \
+                                   (D->Version.empty() == false && \
+                                    Cache->VS().CheckDep(Ver.VerStr(),D->Op,D->Version.c_str()) == false))
+
+              APT::VersionList verlist;
+              if (Pkg.end() == false)
+              {
+                 pkgCache::VerIterator Ver = (*Cache)[Pkg].InstVerIter(*Cache);
+                 if (BADVER(Ver) == false)
+                    verlist.insert(Ver);
+                 Ver = (*Cache)[Pkg].CandidateVerIter(*Cache);
+                 if (BADVER(Ver) == false)
+                    verlist.insert(Ver);
+              }
+              if (verlist.empty() == true)
+              {
+                 pkgCache::PkgIterator HostPkg = Cache->FindPkg(D->Package, hostArch);
+                 if (HostPkg.end() == false)
+                 {
+                    pkgCache::VerIterator Ver = (*Cache)[HostPkg].InstVerIter(*Cache);
+                    if (BADVER(Ver) == false)
+                       verlist.insert(Ver);
+                    Ver = (*Cache)[HostPkg].CandidateVerIter(*Cache);
+                    if (BADVER(Ver) == false)
+                       verlist.insert(Ver);
+                 }
+              }
+              #undef BADVER
+
+              string forbidden;
+              // We need to decide if host or build arch, so find a version we can look at
+              APT::VersionList::const_iterator Ver = verlist.begin();
+              for (; Ver != verlist.end(); ++Ver)
+              {
+                 forbidden.clear();
+                 if (Ver->MultiArch == pkgCache::Version::None || Ver->MultiArch == pkgCache::Version::All)
+                 {
+                    if (colon == string::npos)
+                       Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
+                    else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
+                       forbidden = "Multi-Arch: none";
+                 }
+                 else if (Ver->MultiArch == pkgCache::Version::Same)
+                 {
+                    if (colon == string::npos)
+                       Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
+                    else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
+                       forbidden = "Multi-Arch: same";
+                    // :native gets the buildArch
+                 }
+                 else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
+                 {
+                    if (colon != string::npos)
+                       forbidden = "Multi-Arch: foreign";
+                 }
+                 else if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
+                 {
+                    if (colon == string::npos)
+                       Pkg = Ver.ParentPkg().Group().FindPkg(hostArch);
+                    else if (strcmp(D->Package.c_str() + colon, ":any") == 0)
+                    {
+                       // prefer any installed over preferred non-installed architectures
+                       pkgCache::GrpIterator Grp = Ver.ParentPkg().Group();
+                       // we don't check for version here as we are better of with upgrading than remove and install
+                       for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg))
+                          if (Pkg.CurrentVer().end() == false)
+                             break;
+                       if (Pkg.end() == true)
+                          Pkg = Grp.FindPreferredPkg(true);
+                    }
+                    // native gets buildArch
+                 }
+
+                 if (forbidden.empty() == false)
+                 {
+                    if (_config->FindB("Debug::BuildDeps",false) == true)
+                       cout << D->Package.substr(colon, string::npos) << " is not allowed from " << forbidden << " package " << (*D).Package << " (" << Ver.VerStr() << ")" << endl;
+                    continue;
+                 }
+
+                 //we found a good version
+                 break;
+              }
+              if (Ver == verlist.end())
+              {
+                 if (_config->FindB("Debug::BuildDeps",false) == true)
+                    cout << " No multiarch info as we have no satisfying installed nor candidate for " << D->Package << " on build or host arch" << endl;
+
+                 if (forbidden.empty() == false)
+                 {
+                    if (hasAlternatives)
+                       continue;
+                    return _error->Error(_("%s dependency for %s can't be satisfied "
+                                           "because %s is not allowed on '%s' packages"),
+                                         Last->BuildDepType(D->Type), Src.c_str(),
+                                         D->Package.c_str(), forbidden.c_str());
+                 }
+              }
+           }
+           else
+              Pkg = Cache->FindPkg(D->Package);
+
            if (Pkg.end() == true)
             {
                if (_config->FindB("Debug::BuildDeps",false) == true)
@@ -2778,99 +3006,74 @@ bool DoBuildDep(CommandLine &CmdL)
                                     (*D).Package.c_str());
             }
 
-            /*
-             * if there are alternatives, we've already picked one, so skip
-             * the rest
-             *
-             * TODO: this means that if there's a build-dep on A|B and B is
-             * installed, we'll still try to install A; more importantly,
-             * if A is currently broken, we cannot go back and try B. To fix 
-             * this would require we do a Resolve cycle for each package we 
-             * add to the install list. Ugh
-             */
-                       
-           /* 
-            * If this is a virtual package, we need to check the list of
-            * packages that provide it and see if any of those are
-            * installed
-            */
-            pkgCache::PrvIterator Prv = Pkg.ProvidesList();
-            for (; Prv.end() != true; Prv++)
-           {
-               if (_config->FindB("Debug::BuildDeps",false) == true)
-                    cout << "  Checking provider " << Prv.OwnerPkg().FullName() << endl;
-
-              if ((*Cache)[Prv.OwnerPkg()].InstVerIter(*Cache).end() == false)
-                 break;
-            }
-            
-            // Get installed version and version we are going to install
            pkgCache::VerIterator IV = (*Cache)[Pkg].InstVerIter(*Cache);
+           if (IV.end() == false)
+           {
+              if (_config->FindB("Debug::BuildDeps",false) == true)
+                 cout << "  Is installed\n";
 
-            if ((*D).Version[0] != '\0') {
-                 // Versioned dependency
-
-                 pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
-
-                 for (; CV.end() != true; CV++)
-                 {
-                      if (Cache->VS().CheckDep(CV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
-                           break;
-                 }
-                 if (CV.end() == true)
-                {
-                  if (hasAlternatives)
-                  {
-                     continue;
-                  }
-                  else
-                  {
-                      return _error->Error(_("%s dependency for %s cannot be satisfied "
-                                             "because no available versions of package %s "
-                                             "can satisfy version requirements"),
-                                           Last->BuildDepType((*D).Type),Src.c_str(),
-                                           (*D).Package.c_str());
-                  }
-                }
-            }
-            else
-            {
-               // Only consider virtual packages if there is no versioned dependency
-               if (Prv.end() == false)
-               {
-                  if (_config->FindB("Debug::BuildDeps",false) == true)
-                     cout << "  Is provided by installed package " << Prv.OwnerPkg().FullName() << endl;
-                  skipAlternatives = hasAlternatives;
-                  continue;
-               }
-            }
+              if (D->Version.empty() == true ||
+                  Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
+              {
+                 skipAlternatives = hasAlternatives;
+                 continue;
+              }
 
-            if (IV.end() == false)
-            {
-               if (_config->FindB("Debug::BuildDeps",false) == true)
-                  cout << "  Is installed\n";
+              if (_config->FindB("Debug::BuildDeps",false) == true)
+                 cout << "    ...but the installed version doesn't meet the version requirement\n";
 
-               if (Cache->VS().CheckDep(IV.VerStr(),(*D).Op,(*D).Version.c_str()) == true)
-               {
-                  skipAlternatives = hasAlternatives;
-                  continue;
-               }
+              if (((*D).Op & pkgCache::Dep::LessEq) == pkgCache::Dep::LessEq)
+                 return _error->Error(_("Failed to satisfy %s dependency for %s: Installed package %s is too new"),
+                                       Last->BuildDepType((*D).Type), Src.c_str(), Pkg.FullName(true).c_str());
+           }
 
-               if (_config->FindB("Debug::BuildDeps",false) == true)
-                  cout << "    ...but the installed version doesn't meet the version requirement\n";
-
-               if (((*D).Op & pkgCache::Dep::LessEq) == pkgCache::Dep::LessEq)
-               {
-                  return _error->Error(_("Failed to satisfy %s dependency for %s: Installed package %s is too new"),
-                                       Last->BuildDepType((*D).Type),
-                                       Src.c_str(),
-                                       Pkg.FullName(true).c_str());
-               }
-            }
+           // Only consider virtual packages if there is no versioned dependency
+           if ((*D).Version.empty() == true)
+           {
+              /*
+               * If this is a virtual package, we need to check the list of
+               * packages that provide it and see if any of those are
+               * installed
+               */
+              pkgCache::PrvIterator Prv = Pkg.ProvidesList();
+              for (; Prv.end() != true; ++Prv)
+              {
+                 if (_config->FindB("Debug::BuildDeps",false) == true)
+                    cout << "  Checking provider " << Prv.OwnerPkg().FullName() << endl;
 
+                 if ((*Cache)[Prv.OwnerPkg()].InstVerIter(*Cache).end() == false)
+                    break;
+              }
 
-            if (_config->FindB("Debug::BuildDeps",false) == true)
-               cout << "  Trying to install " << (*D).Package << endl;
+              if (Prv.end() == false)
+              {
+                 if (_config->FindB("Debug::BuildDeps",false) == true)
+                    cout << "  Is provided by installed package " << Prv.OwnerPkg().FullName() << endl;
+                 skipAlternatives = hasAlternatives;
+                 continue;
+              }
+           }
+           else // versioned dependency
+           {
+              pkgCache::VerIterator CV = (*Cache)[Pkg].CandidateVerIter(*Cache);
+              if (CV.end() == true ||
+                  Cache->VS().CheckDep(CV.VerStr(),(*D).Op,(*D).Version.c_str()) == false)
+              {
+                 if (hasAlternatives)
+                    continue;
+                 else if (CV.end() == false)
+                    return _error->Error(_("%s dependency for %s cannot be satisfied "
+                                           "because candidate version of package %s "
+                                           "can't satisfy version requirements"),
+                                         Last->BuildDepType(D->Type), Src.c_str(),
+                                         D->Package.c_str());
+                 else
+                    return _error->Error(_("%s dependency for %s cannot be satisfied "
+                                           "because package %s has no candidate version"),
+                                         Last->BuildDepType(D->Type), Src.c_str(),
+                                         D->Package.c_str());
+              }
+           }
 
             if (TryToInstallBuildDep(Pkg,Cache,Fix,false,false) == true)
             {
@@ -3054,16 +3257,20 @@ bool DoChangelog(CommandLine &CmdL)
       return false;
    
    APT::CacheSetHelper helper(c0out);
-   APT::VersionSet verset = APT::VersionSet::FromCommandLine(Cache,
-               CmdL.FileList + 1, APT::VersionSet::CANDIDATE, helper);
+   APT::VersionList verset = APT::VersionList::FromCommandLine(Cache,
+               CmdL.FileList + 1, APT::VersionList::CANDIDATE, helper);
    if (verset.empty() == true)
       return false;
    pkgAcquire Fetcher;
 
    if (_config->FindB("APT::Get::Print-URIs", false) == true)
-      for (APT::VersionSet::const_iterator Ver = verset.begin();
+   {
+      bool Success = true;
+      for (APT::VersionList::const_iterator Ver = verset.begin();
           Ver != verset.end(); ++Ver)
-        return DownloadChangelog(Cache, Fetcher, Ver, "");
+        Success &= DownloadChangelog(Cache, Fetcher, Ver, "");
+      return Success;
+   }
 
    AcqTextStatus Stat(ScreenWidth, _config->FindI("quiet",0));
    Fetcher.Setup(&Stat);
@@ -3084,7 +3291,7 @@ bool DoChangelog(CommandLine &CmdL)
         return _error->Errno("mkdtemp", "mkdtemp failed");
    }
 
-   for (APT::VersionSet::const_iterator Ver = verset.begin(); 
+   for (APT::VersionList::const_iterator Ver = verset.begin(); 
         Ver != verset.end(); 
         ++Ver) 
    {
@@ -3128,7 +3335,7 @@ bool DoMoo(CommandLine &CmdL)
 /* */
 bool ShowHelp(CommandLine &CmdL)
 {
-   ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,VERSION,
+   ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
            COMMON_ARCH,__DATE__,__TIME__);
            
    if (_config->FindB("version") == true)
@@ -3257,6 +3464,7 @@ int main(int argc,const char *argv[])                                     /*{{{*/
       {'m',"ignore-missing","APT::Get::Fix-Missing",0},
       {'t',"target-release","APT::Default-Release",CommandLine::HasArg},
       {'t',"default-release","APT::Default-Release",CommandLine::HasArg},
+      {'a',"host-architecture","APT::Get::Host-Architecture",CommandLine::HasArg},
       {0,"download","APT::Get::Download",0},
       {0,"fix-missing","APT::Get::Fix-Missing",0},
       {0,"ignore-hold","APT::Ignore-Hold",0},