in 0.4.0 we released this breaking change
7609526

However the tables library imports its own tests 🙄

https://github.com/PyTables/PyTables/blob/v3.6.1/tables/__init__.py#L148

Running bazel test :pandas_test in this repro https://github.com/UebelAndre/rules_python_regression illustrates the problem, and commenting out that line in tables fixes it.

So the question is what to do:

1. only revert the breaking change
2. add some opt-in or opt-out behavior all the way up at pip_install or pip_import that is wired into the BUILD file generation, turning this change on for all wheels
3. make it more fine-grained, such that users configure specific libraries to have the tests folder excluded
4. generalize the feature like in rules_nodejs where users can give us snippets to replace/extend the content of generated BUILD files for certain wheels. Then when some tests/ files collide with your first-party code you have to give us explicit BUILD file for that library

@mattem this was originally your feature, any opinions?