install location not inside site-packages

[wingkitlee0]

I noticed that h3-py was not installed correctly into the site-packages/, which causes a bunch of h3-related source files in a "root" python folder. This happened when I tried to remove packages (pip uninstall h3):

Found existing installation: h3 3.7.7
Uninstalling h3-3.7.7:
  Would remove:
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/CHANGELOG.md
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/CMakeLists.txt
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/LICENSE
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/include/h3/h3api.h
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/cmake/h3/h3Config.cmake
...

However, other packages (e.g., pip uninstall numpy) give

Found existing installation: numpy 1.26.4
Uninstalling numpy-1.26.4:
  Would remove:
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/bin/f2py
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/python3.12/site-packages/numpy-1.26.4.dist-info/*
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/python3.12/site-packages/numpy.libs/libgfortran-040039e1.so.5.0.0
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/python3.12/site-packages/numpy.libs/libopenblas64_p-r0-0cf96a72.3.23.dev.so
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/python3.12/site-packages/numpy.libs/libquadmath-96973f99.so.0.0.0
    /home/wklee/.pyenv/versions/3.12.2/envs/py312/lib/python3.12/site-packages/numpy/*

I tried this on different environments, including my windows env and still see it..

[ajfriend]

Hmmm, good catch @wingkitlee0. That's weird. Off the top of my head, I'm not sure why that's happening, but it does seem wrong.

I can try to take a look when I have time, but I'd be more than happy if anyone else looks into this in the meantime. :)

[wingkitlee0]

This is an old bug in skbuild related to MANIFEST.in.
scikit-build/scikit-build#680
which seems to be not fixed fully (PR was reverted)

In other packages, they simply use package_data directly: Qiskit/qiskit-aer#1677

P.S. I noticed this when I was trying to grab the h3api.h ..

[ajfriend]

Nice. Would you be willing to put up a PR to fix?

In the long term, I think we could also try to modernize the build, as in #340

[wingkitlee0]

Sure, I can try.