Hi,
while packaging griffe 2.0.2 for openSUSE, the test suite fails when run from the PyPI source tarball (sdist), even though most of the suite passes.

The failing test is:

• tests/test_finder.py::test_meson_python_file_handling

Failure:

FileNotFoundError: [Errno 2] No such file or directory: 'packages/griffelib/src'
From the test:
pth_file.write_text(
    "hello=1\ninstall({'griffe', 'hello'}, 'packages/griffelib', ['/tmp/ninja'], False)",
    encoding="utf8",
)
...
assert paths == [Path("packages/griffelib/src")]

The problem seems to be that the test assumes a repository/workspace checkout layout where packages/griffelib/src exists. However, in the published sdist, the packages/ directory is not included.

Relevant pyproject.toml bits:

• the sdist include list does not include /packages
• but the project still defines a workspace with members = ["packages/*"]

So either:

1. the sdist should include the packages/ tree needed by the tests, or
2. this test should not assume checkout-only paths when run from an sdist

In downstream packaging, we currently have to skip this single test when testing from the released tarball.
Would you prefer a patch to the test, or should the sdist contents be adjusted?