tree c3818ab21af630e4b65d9210b2cb3660b29db222
parent 9a21e1f08be692598a203de88f3bcef23e0dcc7a
author Sebastian Luther <SebastianLuther@gmx.de> 1392567254 +0100
committer Sebastian Luther <SebastianLuther@gmx.de> 1392567254 +0100

Fix crash in depgraph._remove_pkg

Make sure we don't try to remove a packages twice. This happened in the
past when a package was its own digraph-child.

One way to trigger this is a DEPEND on itself as in the test case.

This bug was reported by slyfox on IRC. In his case the cause for the
self-edge is unknown. Unfortunately the system state is lost.