249b34aadc
Python does add the script's directory into "sys.path". For the case of
"catch_conflicts.py" this means "/nix/store" is added to "sys.path". This can
result in very long delays if the store contains a lot of entries.
(moved from master commit 76213d102c)
30 lines
908 B
Python
30 lines
908 B
Python
import pkg_resources
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import collections
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import sys
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do_abort = False
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packages = collections.defaultdict(list)
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for f in sys.path:
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for req in pkg_resources.find_distributions(f):
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if req not in packages[req.project_name]:
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# some exceptions inside buildPythonPackage
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if req.project_name in ['setuptools', 'pip', 'wheel']:
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continue
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packages[req.project_name].append(req)
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for name, duplicates in packages.items():
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if len(duplicates) > 1:
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do_abort = True
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print("Found duplicated packages in closure for dependency '{}': ".format(name))
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for dup in duplicates:
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print(" " + repr(dup))
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if do_abort:
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print("")
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print(
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'Package duplicates found in closure, see above. Usually this '
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'happens if two packages depend on different version '
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'of the same dependency.')
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sys.exit(1)
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