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I have some more questions about building python wheels out of pants targets. so say I have two libraries that I want to expose for external, non-pants usage: src/python/my_org/foo/bar, and src/python/my_org/baz.

I build both wheels. the first will contain a package my_org.foo.bar, and the second will contain a package my_org.baz

since these two wheels both define a top-level ‘my_org’ package, doesn’t this mean that the two wheels can’t be used together in a project?

and if so, is there any way to get pants to structure the wheels in a way where they could be used together?

They can, but to be clear, this is not a pants thing, it's a python thing. You need to declare a "namespace package" for `my_org`. This is most popularly done by adding a dependency on setuptools and using `__import__('pkg_resources').declare_namespace(__name__)` in `my_org/__init__.py`. see here: <https://setuptools.readthedocs.io/en/latest/setuptools.html#namespace-packages>