tree 3dc3095535409c2e1a4fb4fcfa9a380c02df5eb1
parent c2636e6802fb4eb173b2da54d278322cb8edb5e5
author Zac Medico <zmedico@gentoo.org> 1506820430 -0700
committer Zac Medico <zmedico@gentoo.org> 1506970983 -0700
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want_restart_for_use_change: backtrack only if needed (bug 632598)

Only backtrack if changes break a USE dependency. Prior
to this fix, the included test case succeeded only with
a --backtrack setting of 3 or more, but now it succeeds
with a --backtrack setting of 2.

X-Gentoo-bug: 632598
X-Gentoo-bug-url: https://bugs.gentoo.org/632598
Acked-by: Brian Dolbec <dolsen@gentoo.org>