apt-private: Collect not found packages in CacheSetHelperAPTGet

Collecting the packages we could not find allows us to pass them
to other places.

2 files changed, 9 insertions, 3 deletions

diff --git a/apt-private/private-cacheset.cc b/apt-private/private-cacheset.cc
index 3d1a2b91c..95a16f8ba 100644
--- a/apt-private/private-cacheset.cc
+++ b/apt-private/private-cacheset.cc
@@ -358,9 +358,15 @@ APT::VersionSet CacheSetHelperAPTGet::tryVirtualPackage(pkgCacheFile &Cache, pkg
 }
 pkgCache::PkgIterator CacheSetHelperAPTGet::canNotFindPkgName(pkgCacheFile &Cache, std::string const &str)
 {
-   pkgCache::PkgIterator const Pkg = canNotFindPkgName_impl(Cache, str);
+   pkgCache::PkgIterator Pkg = canNotFindPkgName_impl(Cache, str);
    if (Pkg.end())
-      return APT::CacheSetHelper::canNotFindPkgName(Cache, str);
+   {
+      Pkg = APT::CacheSetHelper::canNotFindPkgName(Cache, str);
+      if (Pkg.end() && ShowError)
+      {
+	 notFound.insert(str);
+      }
+   }
    return Pkg;
 }
 									/*}}}*/
diff --git a/apt-private/private-cacheset.h b/apt-private/private-cacheset.h
index 7bf486b9e..d20d00b68 100644
--- a/apt-private/private-cacheset.h
+++ b/apt-private/private-cacheset.h
@@ -94,9 +94,9 @@ class CacheSetHelperAPTGet : public APT::CacheSetHelper {
 	bool explicitlyNamed;
 
 	APT::PackageSet virtualPkgs;
-
 public:
 	std::list<std::pair<pkgCache::VerIterator, std::string> > selectedByRelease;
+	std::set<std::string> notFound;
 
 	explicit CacheSetHelperAPTGet(std::ostream &out);