pkg_resources does not find .egg-info dirs from zipimport #2489
Description
In the common case where your path entries are directories, pkg_resources will find installed metadata from either .dist-info or .egg-info dirs. When zipimport is used, it only finds .dist-info. I have a simple PR incoming, but here's info on the repro.
Start with an unpacked sdist:
[thatch@laptop ~]$ cd $(mktemp -d) [thatch@laptop tmp.w7h4GsxPI5]$ wget https://files.pythonhosted.org/packages/bc/ef/d6c26f40a7636f43a52c9719f9d8228f08e01187081e5891702ea0754060/parameterized-0.7.4.tar.gz [thatch@laptop tmp.w7h4GsxPI5]$ tar -xvzf parameterized-0.7.4.tar.gz parameterized-0.7.4/ parameterized-0.7.4/PKG-INFO parameterized-0.7.4/parameterized.egg-info/ parameterized-0.7.4/parameterized.egg-info/PKG-INFO parameterized-0.7.4/parameterized.egg-info/SOURCES.txt parameterized-0.7.4/parameterized.egg-info/pbr.json parameterized-0.7.4/parameterized.egg-info/requires.txt parameterized-0.7.4/parameterized.egg-info/top_level.txt parameterized-0.7.4/parameterized.egg-info/dependency_links.txt parameterized-0.7.4/parameterized/ parameterized-0.7.4/parameterized/__init__.py parameterized-0.7.4/parameterized/test.py parameterized-0.7.4/parameterized/parameterized.py parameterized-0.7.4/.hgignore parameterized-0.7.4/setup.py parameterized-0.7.4/.gitignore parameterized-0.7.4/tox.ini parameterized-0.7.4/CHANGELOG.txt parameterized-0.7.4/setup.cfg parameterized-0.7.4/README.rst parameterized-0.7.4/LICENSE.txt parameterized-0.7.4/.travis.yml parameterized-0.7.4/misspelling-helper/ parameterized-0.7.4/misspelling-helper/nose-parametrized/ parameterized-0.7.4/misspelling-helper/nose-parametrized/MANIFEST parameterized-0.7.4/misspelling-helper/nose-parametrized/setup.py If you add such a dir to the path, it works as-is:
[thatch@laptop tmp.w7h4GsxPI5]$ PYTHONPATH=parameterized-0.7.4 python -c 'import parameterized, pkg_resources; print(parameterized.__file__); print(pkg_resources.get_distribution("parameterized"))' /tmp/tmp.w7h4GsxPI5/parameterized-0.7.4/parameterized/__init__.py parameterized 0.7.4 But if we construct a zip and put that on the path:
[thatch@laptop tmp.w7h4GsxPI5]$ (cd parameterized-0.7.4; zip -r ../parameterized.zip *) adding: CHANGELOG.txt (deflated 64%) adding: LICENSE.txt (deflated 47%) adding: misspelling-helper/ (stored 0%) adding: misspelling-helper/nose-parametrized/ (stored 0%) adding: misspelling-helper/nose-parametrized/setup.py (deflated 48%) adding: misspelling-helper/nose-parametrized/MANIFEST (stored 0%) adding: parameterized/ (stored 0%) adding: parameterized/__pycache__/ (stored 0%) adding: parameterized/__pycache__/parameterized.cpython-38.pyc (deflated 56%) adding: parameterized/__pycache__/__init__.cpython-38.pyc (deflated 31%) adding: parameterized/parameterized.py (deflated 70%) adding: parameterized/test.py (deflated 80%) adding: parameterized/__init__.py (deflated 38%) adding: parameterized.egg-info/ (stored 0%) adding: parameterized.egg-info/dependency_links.txt (stored 0%) adding: parameterized.egg-info/top_level.txt (stored 0%) adding: parameterized.egg-info/requires.txt (stored 0%) adding: parameterized.egg-info/pbr.json (stored 0%) adding: parameterized.egg-info/SOURCES.txt (deflated 56%) adding: parameterized.egg-info/PKG-INFO (deflated 79%) adding: PKG-INFO (deflated 79%) adding: README.rst (deflated 74%) adding: setup.cfg (deflated 7%) adding: setup.py (deflated 49%) adding: tox.ini (deflated 61%) [thatch@laptop tmp.w7h4GsxPI5]$ PYTHONPATH=parameterized.zip python -c 'import parameterized, pkg_resources; print(parameterized.__file__); print(pkg_resources.get_distribution("parameterized"))' /tmp/tmp.w7h4GsxPI5/parameterized.zip/parameterized/__init__.py Traceback (most recent call last): File "<string>", line 1, in <module> File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 481, in get_distribution dist = get_provider(dist) File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 357, in get_provider return working_set.find(moduleOrReq) or require(str(moduleOrReq))[0] File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 900, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 786, in resolve raise DistributionNotFound(req, requirers) pkg_resources.DistributionNotFound: The 'parameterized' distribution was not found and is required by the application Now a try with the upcoming PR:
[thatch@laptop tmp.w7h4GsxPI5]$ . ~/code/setuptools/.venv/bin/activate (.venv) [thatch@laptop tmp.w7h4GsxPI5]$ PYTHONPATH=parameterized.zip python -c 'import parameterized, pkg_resources; print(parameterized.__file__); print(pkg_resources.get_distribution("parameterized"))' /tmp/tmp.w7h4GsxPI5/parameterized.zip/parameterized/__init__.py parameterized 0.7.4