merged lp:~donkult/apt/sid
[apt.git] / cmdline / apt-get.cc
index 38003e43097a6539121e02bd7215173876fbc165..1849f1335069ccf1e404739e6d6547ddc1397633 100644 (file)
@@ -363,7 +363,7 @@ void ShowBroken(ostream &out,CacheFile &Cache,bool Now)
            
            if (Start == End)
               break;
-           Start++;
+           ++Start;
         }       
       }            
    }   
@@ -537,7 +537,7 @@ 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 &&
@@ -574,7 +574,7 @@ 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++;
@@ -666,7 +666,7 @@ public:
                                }
                                // if we found no candidate which provide this package, show non-candidates
                                if (provider == 0)
-                                       for (I = Pkg.ProvidesList(); I.end() == false; I++)
+                                       for (I = Pkg.ProvidesList(); I.end() == false; ++I)
                                                out << "  " << I.OwnerPkg().FullName(true) << " " << I.OwnerVer().VerStr()
                                                    << _(" [Not candidate version]") << endl;
                                else
@@ -682,7 +682,7 @@ 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)
@@ -869,9 +869,7 @@ 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)) {};
@@ -923,7 +921,7 @@ 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;
@@ -955,7 +953,7 @@ 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);
       }
@@ -1046,7 +1044,7 @@ 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);
@@ -1240,7 +1238,7 @@ 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;
@@ -1264,7 +1262,7 @@ bool InstallPackages(CacheFile &Cache,bool ShwKept,bool Ask = true,
         {
            if ((*I)->Local == true)
            {
-              I++;
+              ++I;
               continue;
            }
 
@@ -1284,7 +1282,7 @@ 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)
@@ -1388,6 +1386,14 @@ 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);
@@ -1436,7 +1442,7 @@ 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)
@@ -1457,7 +1463,7 @@ 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)
@@ -1609,7 +1615,7 @@ 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;
@@ -1697,7 +1703,7 @@ bool DoAutomaticRemove(CacheFile &Cache)
 
    // 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 {
@@ -1708,8 +1714,8 @@ bool DoAutomaticRemove(CacheFile &Cache)
            for (pkgCache::DepIterator R = P.RevDependsList();
                 R.end() == false; ++R)
            {
-              if (R->Type != pkgCache::Dep::Depends &&
-                  R->Type != pkgCache::Dep::PreDepends)
+              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))
@@ -1992,7 +1998,7 @@ 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() && 
@@ -2015,7 +2021,7 @@ bool DoInstall(CommandLine &CmdL)
 
               if (Start >= End)
                  break;
-              Start++;
+              ++Start;
            }
            
            if(foundInstalledInOrGroup == false)
@@ -2050,8 +2056,8 @@ bool DoInstall(CommandLine &CmdL)
 
    return InstallPackages(Cache,false);   
 }
-
-/* mark packages as automatically/manually installed. */
+                                                                       /*}}}*/
+/* mark packages as automatically/manually installed.                  {{{*/
 bool DoMarkAuto(CommandLine &CmdL)
 {
    bool Action = true;
@@ -2086,6 +2092,9 @@ bool DoMarkAuto(CommandLine &CmdL)
          AutoMarkChanged++;
       }
    }
+
+   _error->Notice(_("This command is deprecated. Please use 'apt-mark auto' and 'apt-mark manual' instead."));
+
    if (AutoMarkChanged && ! _config->FindB("APT::Get::Simulate",false))
       return Cache->writeStateFile(NULL);
    return false;
@@ -2126,7 +2135,7 @@ 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 */
@@ -2136,7 +2145,7 @@ 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 */
@@ -2145,7 +2154,7 @@ 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 ||
@@ -2162,7 +2171,7 @@ 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)
            {
@@ -2270,7 +2279,7 @@ bool DoDownload(CommandLine &CmdL)
 
    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);
@@ -2308,7 +2317,7 @@ 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;
@@ -2363,8 +2372,7 @@ 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()];
    
@@ -2427,7 +2435,7 @@ 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")
@@ -2529,7 +2537,7 @@ 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;
@@ -2545,7 +2553,7 @@ 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)
@@ -2574,7 +2582,7 @@ 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());
         
@@ -2610,12 +2618,17 @@ 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)
            {
@@ -2677,8 +2690,19 @@ 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;
@@ -2707,22 +2731,32 @@ 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;
@@ -2731,27 +2765,117 @@ 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)
+           {
+              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);
+
+              // We need to decide if host or build arch, so find a version we can look at
+              pkgCache::VerIterator Ver;
+
+              // a bad version either is invalid or doesn't satify dependency
+              #define BADVER(Ver) Ver.end() == true || \
+                                  (Ver.end() == false && D->Version.empty() == false && \
+                                   Cache->VS().CheckDep(Ver.VerStr(),D->Op,D->Version.c_str()) == false)
+
+              if (Pkg.end() == false)
+              {
+                 Ver = (*Cache)[Pkg].InstVerIter(*Cache);
+                 if (BADVER(Ver))
+                    Ver = (*Cache)[Pkg].CandidateVerIter(*Cache);
+              }
+              if (BADVER(Ver))
+              {
+                 pkgCache::PkgIterator HostPkg = Cache->FindPkg(D->Package, hostArch);
+                 if (HostPkg.end() == false)
+                 {
+                    Ver = (*Cache)[HostPkg].InstVerIter(*Cache);
+                    if (BADVER(Ver))
+                       Ver = (*Cache)[HostPkg].CandidateVerIter(*Cache);
+                 }
+              }
+              if ((BADVER(Ver)) == false)
+              {
+                 string forbidden;
+                 if (Ver->MultiArch == pkgCache::Version::None || Ver->MultiArch == pkgCache::Version::All);
+                 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 || Ver->MultiArch == pkgCache::Version::AllForeign)
+                 {
+                    if (colon != string::npos)
+                       forbidden = "Multi-Arch: foreign";
+                 }
+                 else if (Ver->MultiArch == pkgCache::Version::Allowed || Ver->MultiArch == pkgCache::Version::AllAllowed)
+                 {
+                    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 << " :any is not allowed from M-A: same package " << (*D).Package << endl;
+                    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(), "Multi-Arch: same");
+                 }
+              }
+              else 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;
+              #undef BADVER
+           }
+           else
+              Pkg = Cache->FindPkg(D->Package);
+
            if (Pkg.end() == true)
             {
                if (_config->FindB("Debug::BuildDeps",false) == true)
@@ -2766,99 +2890,74 @@ 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)
             {
@@ -3184,8 +3283,6 @@ bool ShowHelp(CommandLine &CmdL)
       "   clean - Erase downloaded archive files\n"
       "   autoclean - Erase old downloaded archive files\n"
       "   check - Verify that there are no broken dependencies\n"
-      "   markauto - Mark the given packages as automatically installed\n"
-      "   unmarkauto - Mark the given packages as manually installed\n"
       "   changelog - Download and display the changelog for the given package\n"
       "   download - Download the binary package into the current directory\n"
       "\n"
@@ -3246,6 +3343,7 @@ 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},