Don't consider dist-info in a wheel as "installed" #11217
Merged
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This applies to the new importlib.metadata backend. The legacy pkg_resources backend already does this (albeit accidentally).
A package inside a wheel is not guaranteed to "work" when directly imported, so we should not treat it as an installed distribution.
This fixes #11183 on our side. Note that this new logic slightly differs from the pkg_resources implementation, which blindly ignores all entries with a
.whl
suffix, while we only ignore files that actually look like a valid wheel. This means that something namedpip.whl
will not be ignored by this logic.