Adding upstream version 2.7.12.upstream/2.7.12

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1172 insertions, 0 deletions

diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
new file mode 100644
index 0000000..ce7677e
--- /dev/null
+++ b/apt-pkg/packagemanager.cc
@@ -0,0 +1,1172 @@
+// -*- mode: cpp; mode: fold -*-
+// Description								/*{{{*/
+/* ######################################################################
+
+   Package Manager - Abstracts the package manager
+
+   More work is needed in the area of transitioning provides, ie exim
+   replacing smail. This can cause interesting side effects.
+
+   Other cases involving conflicts+replaces should be tested. 
+   
+   ##################################################################### */
+									/*}}}*/
+// Include Files							/*{{{*/
+#include <config.h>
+
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/install-progress.h>
+#include <apt-pkg/macros.h>
+#include <apt-pkg/orderlist.h>
+#include <apt-pkg/packagemanager.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/prettyprinters.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/version.h>
+
+#include <cstddef>
+#include <iostream>
+#include <list>
+#include <string>
+
+#include <apti18n.h>
+									/*}}}*/
+using namespace std;
+
+bool pkgPackageManager::SigINTStop = false;
+
+// PM::PackageManager - Constructor					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache),
+							    List(NULL), Res(Incomplete), d(NULL)
+{
+   FileNames = new string[Cache.Head().PackageCount];
+   Debug = _config->FindB("Debug::pkgPackageManager",false);
+   NoImmConfigure = !_config->FindB("APT::Immediate-Configure",true);
+   ImmConfigureAll = _config->FindB("APT::Immediate-Configure-All",false);
+}
+									/*}}}*/
+// PM::PackageManager - Destructor					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgPackageManager::~pkgPackageManager()
+{
+   delete List;
+   delete [] FileNames;
+}
+									/*}}}*/
+// PM::GetArchives - Queue the archives for download			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
+				    pkgRecords *Recs)
+{
+   if (CreateOrderList() == false)
+      return false;
+   
+   bool const ordering =
+	_config->FindB("PackageManager::UnpackAll",true) ?
+		List->OrderUnpack() : List->OrderCritical();
+   if (ordering == false)
+      return _error->Error("Internal ordering error");
+
+   for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I)
+   {
+      PkgIterator Pkg(Cache,*I);
+      FileNames[Pkg->ID] = string();
+      
+      // Skip packages to erase
+      if (Cache[Pkg].Delete() == true)
+	 continue;
+
+      // Skip Packages that need configure only.
+      if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && 
+	  Cache[Pkg].Keep() == true)
+	 continue;
+
+      // Skip already processed packages
+      if (List->IsNow(Pkg) == false)
+	 continue;
+
+      new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
+			FileNames[Pkg->ID]);
+   }
+
+   return true;
+}
+									/*}}}*/
+// PM::FixMissing - Keep all missing packages				/*{{{*/
+// ---------------------------------------------------------------------
+/* This is called to correct the installation when packages could not
+   be downloaded. */
+bool pkgPackageManager::FixMissing()
+{   
+   pkgDepCache::ActionGroup group(Cache);
+   pkgProblemResolver Resolve(&Cache);
+   List->SetFileList(FileNames);
+
+   bool Bad = false;
+   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+   {
+      if (List->IsMissing(I) == false)
+	 continue;
+   
+      // Okay, this file is missing and we need it. Mark it for keep 
+      Bad = true;
+      Cache.MarkKeep(I, false, false);
+   }
+ 
+   // We have to empty the list otherwise it will not have the new changes
+   delete List;
+   List = 0;
+   
+   if (Bad == false)
+      return true;
+   
+   // Now downgrade everything that is broken
+   return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;   
+}
+									/*}}}*/
+// PM::ImmediateAdd - Add the immediate flag recursively		/*{{{*/
+// ---------------------------------------------------------------------
+/* This adds the immediate flag to the pkg and recursively to the
+   dependencies
+ */
+void pkgPackageManager::ImmediateAdd(PkgIterator I, bool UseInstallVer, unsigned const int &Depth)
+{
+   DepIterator D;
+   
+   if(UseInstallVer)
+   {
+      if(Cache[I].InstallVer == 0)
+	 return;
+      D = Cache[I].InstVerIter(Cache).DependsList(); 
+   } else {
+      if (I->CurrentVer == 0)
+	 return;
+      D = I.CurrentVer().DependsList(); 
+   }
+
+   for ( /* nothing */  ; D.end() == false; ++D)
+      if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
+      {
+	 if(!List->IsFlag(D.TargetPkg(), pkgOrderList::Immediate))
+	 {
+	    if(Debug)
+	       clog << OutputInDepth(Depth) << "ImmediateAdd(): Adding Immediate flag to " << APT::PrettyPkg(&Cache, D.TargetPkg()) << " cause of " << D.DepType() << " " << I.FullName() << endl;
+	    List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
+	    ImmediateAdd(D.TargetPkg(), UseInstallVer, Depth + 1);
+	 }
+      }
+   return;
+}
+									/*}}}*/
+// PM::CreateOrderList - Create the ordering class			/*{{{*/
+// ---------------------------------------------------------------------
+/* This populates the ordering list with all the packages that are
+   going to change. */
+bool pkgPackageManager::CreateOrderList()
+{
+   if (List != 0)
+      return true;
+   
+   delete List;
+   List = new pkgOrderList(&Cache);
+
+   if (Debug && ImmConfigureAll) 
+      clog << "CreateOrderList(): Adding Immediate flag for all packages because of APT::Immediate-Configure-All" << endl;
+   
+   // Generate the list of affected packages and sort it
+   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+   {
+      // Ignore no-version packages
+      if (I->VersionList == 0)
+	 continue;
+      
+      // Mark the package and its dependents for immediate configuration
+      if ((((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential) &&
+	  NoImmConfigure == false) || ImmConfigureAll)
+      {
+	 if(Debug && !ImmConfigureAll)
+	    clog << "CreateOrderList(): Adding Immediate flag for " << I.FullName() << endl;
+	 List->Flag(I,pkgOrderList::Immediate);
+	 
+	 if (!ImmConfigureAll) {
+	    // Look for other install packages to make immediate configurea
+	    ImmediateAdd(I, true);
+	  
+	    // And again with the current version.
+	    ImmediateAdd(I, false);
+	 }
+      }
+      
+      // Not interesting
+      if ((Cache[I].Keep() == true || 
+	  Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
+	  I.State() == pkgCache::PkgIterator::NeedsNothing &&
+	  (Cache[I].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall &&
+	  (I.Purge() != false || Cache[I].Mode != pkgDepCache::ModeDelete ||
+	   (Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge))
+	 continue;
+      
+      // Append it to the list
+      List->push_back(I);      
+   }
+   
+   return true;
+}
+									/*}}}*/
+// PM::DepAlwaysTrue - Returns true if this dep is irrelevant		/*{{{*/
+// ---------------------------------------------------------------------
+/* The restriction on provides is to eliminate the case when provides
+   are transitioning between valid states [ie exim to smail] */
+bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
+{
+   if (D.TargetPkg()->ProvidesList != 0)
+      return false;
+   
+   if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
+       (Cache[D] & pkgDepCache::DepNow) != 0)
+      return true;
+   return false;
+}
+									/*}}}*/
+// PM::CheckRConflicts - Look for reverse conflicts			/*{{{*/
+// ---------------------------------------------------------------------
+/* This looks over the reverses for a conflicts line that needs early
+   removal. */
+bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
+					const char *Ver)
+{
+   for (;D.end() == false; ++D)
+   {
+      if (D->Type != pkgCache::Dep::Conflicts &&
+	  D->Type != pkgCache::Dep::Obsoletes)
+	 continue;
+
+      // The package hasn't been changed
+      if (List->IsNow(Pkg) == false)
+	 continue;
+      
+      // Ignore self conflicts, ignore conflicts from irrelevant versions
+      if (D.IsIgnorable(Pkg) || D.ParentVer() != D.ParentPkg().CurrentVer())
+	 continue;
+      
+      if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false)
+	 continue;
+
+      if (EarlyRemove(D.ParentPkg(), &D) == false)
+	 return _error->Error("Reverse conflicts early remove for package '%s' failed",
+			      Pkg.FullName().c_str());
+   }
+   return true;
+}
+									/*}}}*/
+// PM::CheckRBreaks - Look for reverse breaks				/*{{{*/
+bool pkgPackageManager::CheckRBreaks(PkgIterator const &Pkg, DepIterator D,
+				     const char * const Ver)
+{
+   for (;D.end() == false; ++D)
+   {
+      if (D->Type != pkgCache::Dep::DpkgBreaks)
+	 continue;
+
+      PkgIterator const DP = D.ParentPkg();
+      if (Cache[DP].Delete() == false)
+	 continue;
+
+      // Ignore self conflicts, ignore conflicts from irrelevant versions
+      if (D.IsIgnorable(Pkg) || D.ParentVer() != DP.CurrentVer())
+	 continue;
+
+      if (Cache.VS().CheckDep(Ver, D->CompareOp, D.TargetVer()) == false)
+	 continue;
+
+      // no earlyremove() here as user has already agreed to the permanent removal
+      if (SmartRemove(DP) == false)
+	 return _error->Error("Internal Error, Could not early remove %s (%d)",DP.FullName().c_str(), 4);
+   }
+   return true;
+}
+									/*}}}*/
+// PM::ConfigureAll - Run the all out configuration			/*{{{*/
+// ---------------------------------------------------------------------
+/* This configures every package. It is assumed they are all unpacked and
+   that the final configuration is valid. This is also used to catch packages
+   that have not been configured when using ImmConfigureAll */
+bool pkgPackageManager::ConfigureAll()
+{
+   pkgOrderList OList(&Cache);
+   
+   // Populate the order list
+   for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I)
+      if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
+		       pkgOrderList::UnPacked) == true)
+	 OList.push_back(*I);
+   
+   if (OList.OrderConfigure() == false)
+      return false;
+
+   std::string const conf = _config->Find("PackageManager::Configure", "smart");
+   bool const ConfigurePkgs = (ImmConfigureAll || conf == "all");
+
+   // Perform the configuring
+   for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); ++I)
+   {
+      PkgIterator Pkg(Cache,*I);
+      
+      /* Check if the package has been configured, this can happen if SmartConfigure
+         calls its self */ 
+      if (List->IsFlag(Pkg,pkgOrderList::Configured)) continue;
+
+      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.FullName().c_str(),1);
+         else
+            _error->Error("Internal error, packages left unconfigured. %s",Pkg.FullName().c_str());
+	 return false;
+      }
+      
+      List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
+   }
+   
+   return true;
+}
+									/*}}}*/
+// PM::NonLoopingSmart - helper to avoid loops while calling Smart methods /*{{{*/
+// -----------------------------------------------------------------------
+/* ensures that a loop of the form A depends B, B depends A (and similar)
+   is not leading us down into infinite recursion segfault land */
+bool pkgPackageManager::NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg,
+      pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop,
+      bool * const Bad, bool * const Changed)
+{
+   if (PkgLoop == false)
+      List->Flag(Pkg,pkgOrderList::Loop);
+   bool success = false;
+   switch(action)
+   {
+      case UNPACK_IMMEDIATE: success = SmartUnPack(DepPkg, true, Depth + 1); break;
+      case UNPACK: success = SmartUnPack(DepPkg, false, Depth + 1); break;
+      case CONFIGURE: success = SmartConfigure(DepPkg, Depth + 1); break;
+   }
+   if (PkgLoop == false)
+      List->RmFlag(Pkg,pkgOrderList::Loop);
+
+   if (success == false)
+      return false;
+
+   if (Bad != NULL)
+      *Bad = false;
+   if (Changed != NULL && List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
+      *Changed = true;
+   return true;
+}
+									/*}}}*/
+// PM::SmartConfigure - Perform immediate configuration of the pkg	/*{{{*/
+// ---------------------------------------------------------------------
+/* This function tries to put the system in a state where Pkg can be configured.
+   This involves checking each of Pkg's dependencies and unpacking and
+   configuring packages where needed. */
+bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
+{
+   // If this is true, only check and correct and dependencies without the Loop flag
+   bool const PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop);
+
+   if (Debug) {
+      VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer);
+      clog << OutputInDepth(Depth) << "SmartConfigure " << Pkg.FullName() << " (" << InstallVer.VerStr() << ")";
+      if (PkgLoop)
+        clog << " (Only Correct Dependencies)";
+      clog << endl;
+   }
+
+   VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
+
+   /* 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, Changed = false;
+   const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000);
+   unsigned int i=0;
+   std::list<DepIterator> needConfigure;
+   do
+   {
+      // Check each dependency and see if anything needs to be done
+      // so that it can be configured
+      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 && End->Type != pkgCache::Dep::PreDepends)
+	    continue;
+	 Bad = true;
+
+         // the first pass checks if we its all good, i.e. if we have
+         // to do anything at all
+	 for (DepIterator Cur = Start; true; ++Cur)
+	 {
+	    std::unique_ptr<Version *[]> VList(Cur.AllTargets());
+
+	    for (Version **I = VList.get(); *I != 0; ++I)
+	    {
+	       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 &&
+		   (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
+	       {
+		  Bad = false;
+		  break;
+	       }
+
+	       // 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 " << APT::PrettyPkg(&Cache, Pkg) << " loops in SmartConfigure";
+		  if (List->IsFlag(DepPkg,pkgOrderList::UnPacked))
+		     Bad = false;
+		  else if (Debug)
+		     std::clog << ", but it isn't unpacked yet";
+		  if (Debug)
+		     std::clog << std::endl;
+	       }
+	    }
+
+            if (Cur == End || Bad == false)
+	       break;
+         }
+
+         // this dependency is in a good state, so we can stop
+         if (Bad == false)
+         {
+            if (Debug)
+               std::clog << OutputInDepth(Depth) << "Found ok dep " << APT::PrettyPkg(&Cache, Start.TargetPkg()) << std::endl;
+            continue;
+         }
+
+	 // Check for dependencies that have not been unpacked, 
+         // probably due to loops.
+	 for (DepIterator Cur = Start; true; ++Cur)
+	 {
+	    std::unique_ptr<Version *[]> VList(Cur.AllTargets());
+
+	    for (Version **I = VList.get(); *I != 0; ++I)
+	    {
+	       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 &&
+		   (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
+                  continue;
+
+	       // 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 " << APT::PrettyPkg(&Cache, Pkg) << " loops in SmartConfigure";
+		  if (List->IsFlag(DepPkg,pkgOrderList::UnPacked))
+		     Bad = false;
+		  else if (Debug)
+		     std::clog << ", but it isn't unpacked yet";
+		  if (Debug)
+		     std::clog << std::endl;
+	       }
+	       else
+	       {
+		  if (Debug)
+		     clog << OutputInDepth(Depth) << "Unpacking " << DepPkg.FullName() << " to avoid loop " << APT::PrettyDep(&Cache, Cur) << endl;
+		  if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
+		     return false;
+	       }
+               // at this point we either unpacked a Dep or we are in a loop,
+               // no need to unpack a second one
+	       break;
+	    }
+
+	    if (Cur == End || Bad == false)
+	       break;
+	 }
+
+	 if (Bad == false)
+	    continue;
+
+	 needConfigure.push_back(Start);
+      }
+      if (i++ > max_loops)
+         return _error->Error("Internal error: MaxLoopCount reached in SmartUnPack (1) for %s, aborting", Pkg.FullName().c_str());
+   } while (Changed == true);
+
+   // now go over anything that needs configuring
+   Bad = false, Changed = false, i = 0;
+   do
+   {
+      Changed = false;
+      for (std::list<DepIterator>::const_iterator D = needConfigure.begin(); D != needConfigure.end(); ++D)
+      {
+	 // Compute a single dependency element (glob or) without modifying D
+	 pkgCache::DepIterator Start, End;
+	 {
+	    pkgCache::DepIterator Discard = *D;
+	    Discard.GlobOr(Start,End);
+	 }
+
+	 if (End->Type != pkgCache::Dep::Depends && End->Type != pkgCache::Dep::PreDepends)
+	    continue;
+	 Bad = true;
+
+	 // Search for dependencies which are unpacked but aren't configured yet (maybe loops)
+	 for (DepIterator Cur = Start; true; ++Cur)
+	 {
+	    std::unique_ptr<Version *[]> VList(Cur.AllTargets());
+
+	    for (Version **I = VList.get(); *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)
+		  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;
+		  }
+		  if (Debug)
+		     std::clog << OutputInDepth(Depth) << "Configure already unpacked " << APT::PrettyPkg(&Cache, DepPkg) << std::endl;
+		  if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
+		     return false;
+		  break;
+
+	       }
+	       else if (List->IsFlag(DepPkg,pkgOrderList::Configured))
+	       {
+		  Bad = false;
+		  break;
+	       }
+	    }
+	    if (Cur == End || Bad == false)
+	       break;
+         }
+
+
+	 if (Bad == true && Changed == false && Debug == true)
+	    std::clog << OutputInDepth(Depth) << "Could not satisfy " << APT::PrettyDep(&Cache, *D) << std::endl;
+      }
+      if (i++ > max_loops)
+         return _error->Error("Internal error: MaxLoopCount reached in SmartUnPack (2) for %s, aborting", Pkg.FullName().c_str());
+   } while (Changed == true);
+
+   if (Bad == true)
+      return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str());
+
+   // Check for reverse conflicts.
+   if (CheckRBreaks(Pkg,Pkg.RevDependsList(), instVer.VerStr()) == false)
+      return false;
+
+   for (PrvIterator P = instVer.ProvidesList(); P.end() == false; ++P)
+      if (Pkg->Group != P.OwnerPkg()->Group)
+	 CheckRBreaks(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
+
+   if (PkgLoop) return true;
+
+   static std::string const conf = _config->Find("PackageManager::Configure", "smart");
+   static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
+
+   if (List->IsFlag(Pkg,pkgOrderList::Configured))
+      return _error->Error("Internal configure error on '%s'.", Pkg.FullName().c_str());
+
+   if (ConfigurePkgs == true && Configure(Pkg) == false)
+      return false;
+
+   List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
+
+   if ((Cache[Pkg].InstVerIter(Cache)->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same &&
+       not List->IsFlag(Pkg, pkgOrderList::Immediate))
+      for (PkgIterator P = Pkg.Group().PackageList();
+	   P.end() == false; P = Pkg.Group().NextPkg(P))
+      {
+	 if (Pkg == P || List->IsFlag(P,pkgOrderList::Configured) == true ||
+	     List->IsFlag(P,pkgOrderList::UnPacked) == false ||
+	     Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer &&
+	      (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall))
+	    continue;
+	 if (SmartConfigure(P, (Depth +1)) == false)
+	    return false;
+      }
+
+   // Sanity Check
+   if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
+      return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str());
+
+   return true;
+}
+									/*}}}*/
+// PM::EarlyRemove - Perform removal of packages before their time	/*{{{*/
+// ---------------------------------------------------------------------
+/* This is called to deal with conflicts arising from unpacking */
+bool pkgPackageManager::EarlyRemove(PkgIterator Pkg, DepIterator const * const Dep)
+{
+   if (List->IsNow(Pkg) == false)
+      return true;
+
+   // Already removed it
+   if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
+      return true;
+
+   // Woops, it will not be re-installed!
+   if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
+      return false;
+
+   // these breaks on M-A:same packages can be dealt with. They 'loop' by design
+   if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks && Dep->IsMultiArchImplicit() == true)
+      return true;
+
+   // Essential packages get special treatment
+   bool IsEssential = false;
+   if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
+      IsEssential = true;
+   bool IsProtected = false;
+   if ((Pkg->Flags & pkgCache::Flag::Important) != 0)
+      IsProtected = true;
+
+   /* Check for packages that are the dependents of essential packages and
+      promote them too */
+   if (Pkg->CurrentVer != 0)
+   {
+      for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() == false &&
+	   IsEssential == false; ++D)
+	 if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends) {
+	    if ((D.ParentPkg()->Flags & pkgCache::Flag::Essential) != 0)
+	       IsEssential = true;
+	    if ((D.ParentPkg()->Flags & pkgCache::Flag::Important) != 0)
+	       IsProtected = true;
+	 }
+   }
+
+   // dpkg will auto-deconfigure it, no need for the big remove hammer
+   if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks)
+      return true;
+   else if (IsEssential == true)
+   {
+      // FIXME: Unify messaging with Protected below.
+      if (_config->FindB("APT::Force-LoopBreak",false) == false)
+	 return _error->Error(_("This installation run will require temporarily "
+				"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.FullName().c_str());
+   }
+   else if (IsProtected == true)
+   {
+      // FIXME: Message should talk about Protected, not Essential, and unified.
+      if (_config->FindB("APT::Force-LoopBreak",false) == false)
+	 return _error->Error(_("This installation run will require temporarily "
+				"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.FullName().c_str());
+   }
+
+   bool Res = SmartRemove(Pkg);
+   if (Cache[Pkg].Delete() == false)
+      List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
+
+   return Res;
+}
+									/*}}}*/
+// PM::SmartRemove - Removal Helper					/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
+{
+   if (List->IsNow(Pkg) == false)
+      return true;
+
+   List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
+
+   return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
+}
+									/*}}}*/
+// PM::SmartUnPack - Install helper					/*{{{*/
+// ---------------------------------------------------------------------
+/* This puts the system in a state where it can Unpack Pkg, if Pkg is already
+   unpacked, or when it has been unpacked, if Immediate==true it configures it. */
+bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth)
+{
+   bool PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop);
+
+   if (Debug) {
+      clog << OutputInDepth(Depth) << "SmartUnPack " << Pkg.FullName();
+      VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer);
+      if (Pkg.CurrentVer() == 0)
+        clog << " (install version " << InstallVer.VerStr() << ")";
+      else
+        clog << " (replace version " << Pkg.CurrentVer().VerStr() << " with " << InstallVer.VerStr() << ")";
+      if (PkgLoop)
+        clog << " (Only Perform PreUnpack Checks)";
+      if (Immediate)
+	 clog << " immediately";
+      clog << endl;
+   }
+
+   VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
+
+   /* PreUnpack Checks: This loop checks and attempts to rectify any problems that would prevent the package being unpacked.
+      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 dependency 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. */
+   bool SomethingBad = false, Changed = false;
+   bool couldBeTemporaryRemoved = Depth != 0 && List->IsFlag(Pkg,pkgOrderList::Removed) == false;
+   const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000);
+   unsigned int i = 0;
+   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::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)
+	    {
+	       std::unique_ptr<Version *[]> VList(Cur.AllTargets());
+	       for (Version **I = VList.get(); *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 &&
+		      (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
+		  {
+		     Bad = false;
+		     if (Debug)
+			clog << OutputInDepth(Depth) << "Found ok package " << Pkg.FullName() << endl;
+		     break;
+		  }
+	       }
+	       if (Cur == End)
+		  break;
+	    }
+
+	    // Look for something that could be configured.
+	    for (DepIterator Cur = Start; Bad == true && Cur.end() == false; ++Cur)
+	    {
+	       std::unique_ptr<Version *[]> VList(Cur.AllTargets());
+	       for (Version **I = VList.get(); *I != 0; ++I)
+	       {
+		  VerIterator Ver(Cache,*I);
+		  PkgIterator DepPkg = Ver.ParentPkg();
+
+		  // Not the install version
+		  if (Cache[DepPkg].InstallVer != *I)
+		     continue;
+
+		  if (Cache[DepPkg].Keep() == true && DepPkg.State() == PkgIterator::NeedsNothing &&
+			(Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
+		     continue;
+
+		  if (List->IsFlag(DepPkg,pkgOrderList::Configured))
+		  {
+		     Bad = false;
+		     break;
+		  }
+
+		  // check if it needs unpack or if configure is enough
+		  if (List->IsFlag(DepPkg,pkgOrderList::UnPacked) == false)
+		  {
+		     // two packages pre-depending on each other can't be handled sanely
+		     if (List->IsFlag(DepPkg,pkgOrderList::Loop) && PkgLoop)
+		     {
+			// this isn't an error as there is potential for something else to satisfy it
+			// (like a provides or an or-group member)
+			if (Debug)
+			   clog << OutputInDepth(Depth) << "Unpack loop detected between " << DepPkg.FullName() << " and " << Pkg.FullName() << endl;
+			continue;
+		     }
+
+		     if (Debug)
+			clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << DepPkg.FullName() << endl;
+		     if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
+			return false;
+		  }
+		  else
+		  {
+		     if (Debug)
+			clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << DepPkg.FullName() << endl;
+		     if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
+			return false;
+		  }
+		  break;
+	       }
+	    }
+
+	    if (Bad == true)
+	       SomethingBad = true;
+	 }
+	 else if (End->Type == pkgCache::Dep::Conflicts ||
+		  End->Type == pkgCache::Dep::Obsoletes ||
+		  End->Type == pkgCache::Dep::DpkgBreaks)
+	 {
+	    std::unique_ptr<Version *[]> VList(End.AllTargets());
+	    for (Version **I = VList.get(); *I != 0; ++I)
+	    {
+	       VerIterator Ver(Cache,*I);
+	       PkgIterator ConflictPkg = Ver.ParentPkg();
+	       if (ConflictPkg.CurrentVer() != Ver)
+	       {
+		  if (Debug)
+		     std::clog << OutputInDepth(Depth) << "Ignore not-installed version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << APT::PrettyDep(&Cache, End) << std::endl;
+		  continue;
+	       }
+
+	       if (List->IsNow(ConflictPkg) == false)
+	       {
+		  if (Debug)
+		     std::clog << OutputInDepth(Depth) << "Ignore already dealt-with version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << APT::PrettyDep(&Cache, End) << std::endl;
+		  continue;
+	       }
+
+	       if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true)
+	       {
+		  if (Debug)
+		     clog << OutputInDepth(Depth) << "Ignoring " << APT::PrettyDep(&Cache, End) << " as " << ConflictPkg.FullName() << "was temporarily removed" << endl;
+		  continue;
+	       }
+
+	       if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) && PkgLoop)
+	       {
+		  if (End->Type == pkgCache::Dep::DpkgBreaks && End.IsMultiArchImplicit() == true)
+		  {
+		     if (Debug)
+			clog << OutputInDepth(Depth) << "Because dependency is MultiArchImplicit we ignored looping on: " << APT::PrettyPkg(&Cache, ConflictPkg) << endl;
+		     continue;
+		  }
+		  if (Debug)
+		  {
+		     if (End->Type == pkgCache::Dep::DpkgBreaks)
+			clog << OutputInDepth(Depth) << "Because of breaks knot, deconfigure " << ConflictPkg.FullName() << " temporarily" << endl;
+		     else
+			clog << OutputInDepth(Depth) << "Because of conflict knot, removing " << ConflictPkg.FullName() << " temporarily" << endl;
+		  }
+		  if (EarlyRemove(ConflictPkg, &End) == false)
+		     return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 3);
+		  SomethingBad = true;
+		  continue;
+	       }
+
+	       if (Cache[ConflictPkg].Delete() == false)
+	       {
+		  if (Debug)
+		  {
+		     clog << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to avoid " << APT::PrettyDep(&Cache, End);
+		     if (PkgLoop == true)
+			clog << " (Looping)";
+		     clog << std::endl;
+		  }
+		  // we would like to avoid temporary removals and all that at best via a simple unpack
+		  _error->PushToStack();
+		  if (NonLoopingSmart(UNPACK, Pkg, ConflictPkg, Depth, PkgLoop, NULL, &Changed) == false)
+		  {
+		     // but if it fails ignore this failure and look for alternative ways of solving
+		     if (Debug)
+		     {
+			clog << OutputInDepth(Depth) << "Avoidance unpack of " << ConflictPkg.FullName() << " failed for " << APT::PrettyDep(&Cache, End) << " ignoring:" << std::endl;
+			_error->DumpErrors(std::clog, GlobalError::DEBUG, false);
+		     }
+		     _error->RevertToStack();
+		     // ignorance can only happen if a) one of the offenders is already gone
+		     if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true)
+		     {
+			if (Debug)
+			   clog << OutputInDepth(Depth) << "But " << ConflictPkg.FullName() << " was temporarily removed in the meantime to satisfy " << APT::PrettyDep(&Cache, End) << endl;
+		     }
+		     else if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
+		     {
+			if (Debug)
+			   clog << OutputInDepth(Depth) << "But " << Pkg.FullName() << " was temporarily removed in the meantime to satisfy " <<  APT::PrettyDep(&Cache, End) << endl;
+		     }
+		     // or b) we can make one go (removal or dpkg auto-deconfigure)
+		     else
+		     {
+			if (Debug)
+			   clog << OutputInDepth(Depth) << "So temporary remove/deconfigure " << ConflictPkg.FullName() << " to satisfy " <<  APT::PrettyDep(&Cache, End) << endl;
+			if (EarlyRemove(ConflictPkg, &End) == false)
+			   return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 2);
+		     }
+		  }
+		  else
+		     _error->MergeWithStack();
+	       }
+	       else
+	       {
+		  if (Debug)
+		     clog << OutputInDepth(Depth) << "Removing " << ConflictPkg.FullName() << " now to avoid " << APT::PrettyDep(&Cache, End) << endl;
+		  // no earlyremove() here as user has already agreed to the permanent removal
+		  if (SmartRemove(ConflictPkg) == false)
+		     return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 1);
+	       }
+	    }
+	 }
+      }
+      if (i++ > max_loops)
+         return _error->Error("Internal error: APT::pkgPackageManager::MaxLoopCount reached in SmartConfigure for %s, aborting", Pkg.FullName().c_str());
+   } while (Changed == true);
+
+   if (SomethingBad == true)
+      return _error->Error("Couldn't configure %s, probably a dependency cycle.", Pkg.FullName().c_str());
+
+   if (couldBeTemporaryRemoved == true && List->IsFlag(Pkg,pkgOrderList::Removed) == true)
+   {
+      if (Debug)
+	 std::clog << OutputInDepth(Depth) << "Prevent unpack as " << APT::PrettyPkg(&Cache, Pkg) << " is currently temporarily removed" << std::endl;
+      return true;
+   }
+
+   // Check for reverse conflicts.
+   if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
+		   instVer.VerStr()) == false)
+		          return false;
+   
+   for (PrvIterator P = instVer.ProvidesList();
+	P.end() == false; ++P)
+      if (Pkg->Group != P.OwnerPkg()->Group)
+	 CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
+
+   if (PkgLoop)
+      return true;
+
+   List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
+
+   if (Immediate == true && (instVer->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+   {
+      /* Do lockstep M-A:same unpacking in two phases:
+	 First unpack all installed architectures, then the not installed.
+	 This way we avoid that M-A: enabled packages are installed before
+	 their older non-M-A enabled packages are replaced by newer versions */
+      bool const installed = Pkg->CurrentVer != 0;
+      if (installed == true &&
+	  (instVer != Pkg.CurrentVer() ||
+	   ((Cache[Pkg].iFlags & pkgDepCache::ReInstall) == pkgDepCache::ReInstall)) &&
+	  Install(Pkg,FileNames[Pkg->ID]) == false)
+	 return false;
+      for (PkgIterator P = Pkg.Group().PackageList();
+	   P.end() == false; P = Pkg.Group().NextPkg(P))
+      {
+	 if (P->CurrentVer == 0 || P == Pkg || List->IsFlag(P,pkgOrderList::UnPacked) == true ||
+	     Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer &&
+	      (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall))
+	    continue;
+	 if (SmartUnPack(P, false, Depth + 1) == false)
+	    return false;
+      }
+      if (installed == false && Install(Pkg,FileNames[Pkg->ID]) == false)
+	 return false;
+      for (PkgIterator P = Pkg.Group().PackageList();
+	   P.end() == false; P = Pkg.Group().NextPkg(P))
+      {
+	 if (P->CurrentVer != 0 || P == Pkg || List->IsFlag(P,pkgOrderList::UnPacked) == true ||
+	     List->IsFlag(P,pkgOrderList::Configured) == true ||
+	     Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer &&
+	      (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall))
+	    continue;
+	 if (SmartUnPack(P, false, Depth + 1) == false)
+	    return false;
+      }
+   }
+   // packages which are already unpacked don't need to be unpacked again
+   else if ((instVer != Pkg.CurrentVer() ||
+	     ((Cache[Pkg].iFlags & pkgDepCache::ReInstall) == pkgDepCache::ReInstall)) &&
+	    Install(Pkg,FileNames[Pkg->ID]) == false)
+      return false;
+
+   if (Immediate == true) {
+      // Perform immediate configuration of the package.
+      _error->PushToStack();
+      bool configured = SmartConfigure(Pkg, Depth + 1);
+      _error->RevertToStack();
+
+      if (not configured && Debug) {
+	 clog << OutputInDepth(Depth);
+	 ioprintf(clog, _("Could not perform immediate configuration on '%s'. "
+			   "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),
+			 Pkg.FullName().c_str(), 2);
+	 clog << endl;
+      }
+   }
+   
+   return true;
+}
+									/*}}}*/
+// PM::OrderInstall - Installation ordering routine			/*{{{*/
+// ---------------------------------------------------------------------
+/* */
+pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
+{
+   if (CreateOrderList() == false)
+      return Failed;
+
+   Reset();
+
+   if (Debug == true)
+      clog << "Beginning to order" << endl;
+
+   std::string const planner = _config->Find("APT::Planner", "internal");
+   unsigned int flags = 0;
+   if (_config->FindB("APT::Immediate-Configure", true) == false)
+      flags |= EIPP::Request::NO_IMMEDIATE_CONFIGURATION;
+   else if (_config->FindB("APT::Immediate-Configure-All", false))
+      flags |= EIPP::Request::IMMEDIATE_CONFIGURATION_ALL;
+   else if (_config->FindB("APT::Force-LoopBreak", false))
+      flags |= EIPP::Request::ALLOW_TEMPORARY_REMOVE_OF_ESSENTIALS;
+   auto const ret = EIPP::OrderInstall(planner.c_str(), this, flags, nullptr);
+   if (planner != "internal")
+      return ret ? Completed : Failed;
+
+   bool const ordering =
+	_config->FindB("PackageManager::UnpackAll",true) ?
+		List->OrderUnpack(FileNames) : List->OrderCritical();
+   if (ordering == false)
+   {
+      _error->Error("Internal ordering error");
+      return Failed;
+   }
+
+   if (Debug == true)
+      clog << "Done ordering" << endl;
+
+   bool DoneSomething = false;
+   for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I)
+   {
+      PkgIterator Pkg(Cache,*I);
+
+      if (List->IsNow(Pkg) == false)
+      {
+	 if (Debug == true)
+	    clog << "Skipping already done " << Pkg.FullName() << endl;
+	 continue;
+      }
+
+      if (List->IsMissing(Pkg) == true)
+      {
+	 if (Debug == true)
+	    clog << "Sequence completed at " << Pkg.FullName() << endl;
+	 if (DoneSomething == false)
+	 {
+	    _error->Error("Internal Error, ordering was unable to handle the media swap");
+	    return Failed;
+	 }	 
+	 return Incomplete;
+      }
+      
+      // Sanity check
+      if (Cache[Pkg].Keep() == true && 
+	  Pkg.State() == pkgCache::PkgIterator::NeedsNothing &&
+	  (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
+      {
+	 _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.FullName().c_str());
+	 return Failed;
+      }
+      
+      // Perform a delete or an install
+      if (Cache[Pkg].Delete() == true)
+      {
+	 if (SmartRemove(Pkg) == false)
+	    return Failed;
+      }
+      else
+	 if (SmartUnPack(Pkg,List->IsFlag(Pkg,pkgOrderList::Immediate),0) == false)
+	    return Failed;
+      DoneSomething = true;
+      
+      if (ImmConfigureAll) {
+         /* ConfigureAll here to pick up and packages left unconfigured because they were unpacked in the
+            "PreUnpack Checks" section */
+         if (!ConfigureAll())
+            return Failed; 
+      }
+   }
+
+   // Final run through the configure phase
+   if (ConfigureAll() == false)
+      return Failed;
+
+   // Sanity check
+   for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I)
+   {
+      if (List->IsFlag(*I,pkgOrderList::Configured) == false)
+      {
+	 _error->Error("Internal error, packages left unconfigured. %s",
+		       PkgIterator(Cache,*I).FullName().c_str());
+	 return Failed;
+      }
+   }
+	 
+   return Completed;
+}
+// PM::DoInstallPostFork - Does install part that happens after the fork /*{{{*/
+// ---------------------------------------------------------------------
+pkgPackageManager::OrderResult 
+pkgPackageManager::DoInstallPostFork(APT::Progress::PackageManager *progress)
+{
+   bool goResult;
+   goResult = Go(progress);
+   if(goResult == false) 
+      return Failed;
+   
+   return Res;
+}
+									/*}}}*/	
+// PM::DoInstall - Does the installation				/*{{{*/
+// ---------------------------------------------------------------------
+/* This uses the filenames in FileNames and the information in the
+   DepCache to perform the installation of packages.*/
+pkgPackageManager::OrderResult 
+pkgPackageManager::DoInstall(APT::Progress::PackageManager *progress)
+{
+   if(DoInstallPreFork() == Failed)
+      return Failed;
+   
+   return DoInstallPostFork(progress);
+}
+									/*}}}*/