tree 4dfadb1d89b1c81fa7b04ee58948f982e25e86f4
parent 8ab5c8835931fd9ec098dbf4c5f416eb32e4a3a4
author Zac Medico <zmedico@gentoo.org> 1489613677 -0700
committer Zac Medico <zmedico@gentoo.org> 1489639661 -0700
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depgraph: fix slot operator rebuild for llvm:0 to llvm:4 upgrade (bug 612772)

Fix check_reverse_dependencies to ignore dependencies of parent packages
that could be uninstalled in order to solve a blocker conflict. This case
is similar to the one from bug 584626, except that the relevant parent
package is in an older slot which is blocked by a newer slot. In this
case, the _upgrade_available method returns False, because the package
in the older slot is the highest version version available for its
slot. Therefore, a new _in_blocker_conflict method is needed to detect
parent packages that could be uninstalled. The included unit test fails
without this fix.

Since the _in_blocker_conflict method requires information that is
collected by the _validate_blockers method, the _validate_blockers
method now has to be called before the _process_slot_conflict and
_slot_operator_trigger_reinstalls methods.

X-Gentoo-bug: 612772
X-Gentoo-bug-url: https://bugs.gentoo.org/show_bug.cgi?id=612772
Acked-by: Brian Dolbec <dolsen@gentoo.org>