pyproject: include example_module.py

[jschueller]

Closes #668

[rossbar]

Unfortunately I think the fix may be more involved - I cherry-picked this over to #670 to test that it fixes the issue, but the test is still failing. I believe the issue is the test design itself - AFAICT the example_module fixture implicitly expects the tests are run from the source directory rather than pulling paths relative to the install location. This should be fixable with importlib.resources, but I'm having trouble groking the original test intent with the relative paths. @stefmolin @mattgebert any insight?

[stefmolin]

Unfortunately I think the fix may be more involved - I cherry-picked this over to #670 to test that it fixes the issue, but the test is still failing. I believe the issue is the test design itself - AFAICT the example_module fixture implicitly expects the tests are run from the source directory rather than pulling paths relative to the install location. This should be fixable with importlib.resources, but I'm having trouble groking the original test intent with the relative paths. @stefmolin @mattgebert any insight?

It was relative paths so the expected output would be matchable regardless of who ran the tests since it prints the full path. Now that we use the f-string we shouldn't need to keep them relative.

[rossbar]

I cherry-picked this and included it in #670 so I'll close this. Thanks for the fix @jschueller !