In a recent version of src:scikit-learn, a workaround was added to resolve an ImportMismatchError regarding one of the conftest.py files used by pytest.
I hit a new instance of this while preparing a new upstream release, so I inquired [1] with pytest upstream as to why this could be happening. Apparently, the error is caused by the .pybuild directory being located as a subfolder of the source directory. This leads to pytest finding two separate sklearn/conftest.py files * $SRCDIR/sklearn/conftest.py * $SRCDIR/.pybuild/.../sklearn/conftest.py) which triggers the ImportMisMatchError. Now, I've only seen this happen with src:scikit-learn, and (oddly enough) only with 2 of 4 conftest.py files. The other two do not trigger the error, nor do other packages of mine which use pytest. Has anyone seen something similar with their packages, or is anyone aware of any recipes that can be used to resolve the issue properly? >From the GitHub issue, it seems as if the current practice of testing from within .pybuild is not supported by pytest, but I'm inclined to believe that it is my approach that is flawed. [1] https://github.com/pytest-dev/pytest/issues/7223 Christian