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Fix a crash during installability testing

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Signed-off-by: Adam D. Barratt <adam@adam-barratt.org.uk>
This commit is contained in:
Adam D. Barratt 2014-02-27 18:12:54 +00:00
parent 03d15c2ae5
commit 4f48872102
1 changed files with 6 additions and 4 deletions
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10
installability/tester.py
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@ -280,10 +280,6 @@ class InstallabilityTester(object):
# is smaller than testing (so presumably faster)
remain = choice - never - cbroken
if not remain:
# all alternatives would violate the conflicts => package is not installable
return None
if len(remain) > 1 and not remain.isdisjoint(safe_set):
first = None
for r in ifilter(safe_set.__contains__, remain):
@ -305,6 +301,12 @@ class InstallabilityTester(object):
check.update(remain)
musts.update(remain)
continue
if not remain:
# all alternatives would violate the conflicts or are uninstallable
# => package is not installable
return None
# The choice is still deferred
rebuild.add(frozenset(remain))