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britney.py: Avoid creating empty lists for provides

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Signed-off-by: Niels Thykier <niels@thykier.net>
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Niels Thykier 2016-03-24 07:43:08 +00:00
parent 203466bb51
commit 3ff01b5ec9
1 changed files with 2 additions and 2 deletions
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britney.py
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@ -965,7 +965,7 @@ class Britney(object):
# Utility methods for package analysis # Utility methods for package analysis
# ------------------------------------ # ------------------------------------
def get_dependency_solvers(self, block, packages_s_a): def get_dependency_solvers(self, block, packages_s_a, empty_set=frozenset()):
"""Find the packages which satisfy a dependency block """Find the packages which satisfy a dependency block
This method returns the list of packages which satisfy a dependency This method returns the list of packages which satisfy a dependency
@ -996,7 +996,7 @@ class Britney(object):
packages.append(name) packages.append(name)
# look for the package in the virtual packages list and loop on them # look for the package in the virtual packages list and loop on them
for prov, prov_version in provides_s_a.get(name, []): for prov, prov_version in provides_s_a.get(name, empty_set):
if prov not in binaries_s_a: if prov not in binaries_s_a:
continue continue
# A provides only satisfies: # A provides only satisfies: