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-rw-r--r--apt-pkg/depcache.cc9
1 files changed, 7 insertions, 2 deletions
diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index f9c891c86..7e75a6fe3 100644
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -1134,8 +1134,13 @@ bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
std::clog << OutputInDepth(Depth) << Start << " can't be satisfied!" << std::endl;
if (Start.IsCritical() == false)
continue;
- // if the dependency was critical, we can't install it, so remove it again
- MarkDelete(Pkg,false,Depth + 1, false);
+ // if the dependency was critical, we have absolutely no chance to install it,
+ // so if it wasn't installed remove it again. If it was, discard the candidate
+ // as the problemresolver will trip over it otherwise trying to install it (#735967)
+ if (Pkg->CurrentVer == 0)
+ MarkDelete(Pkg,false,Depth + 1, false);
+ else
+ SetCandidateVersion(Pkg.CurrentVer());
return false;
}