Remove usage of deprecated distutils in cmake files

[hmaarrfk]

I didn't have a chance to go through the whole repo, but I made this PR upstream to zfpy which vendors some files

LLNL/zfp#217

If you want to monitor if this "works", please check build logs in conda-forge/zfpy-feedstock#35

goodluck modernizing this.

There seems to be only a finite number of occurrences of distutils

grep "(from|import) distutils" . -RE

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (59492c1) 86.19% compared to head (f0a062a) 86.19%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1032   +/-   ##
=======================================
  Coverage   86.19%   86.19%           
=======================================
  Files          32       32           
  Lines        1579     1579           
  Branches      351      351           
=======================================
  Hits         1361     1361           
  Misses        155      155           
  Partials       63       63           

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[henryiii]

FYI, I think this might need to be conditional, as there were some issues with sysconfig before 3.10 or so.

[hmaarrfk]

lets see if i got the condition right.

[hmaarrfk]

Are you OK bumping cmake to 3.12?

If so, we can use

Python_SITELIB

https://cmake.org/cmake/help/latest/module/FindPython.html

[henryiii]

Ahh, forgot about this, feel free to ping me. This fixes #1047. I'd probably wait to increase the CMake version until scikit-build-core becomes the backend. And we can't move from FindPythonInterp/Libs to FindPython, that's a major breaking change - and people using FindPython don't really need this helper. (Also the first version that works correctly is 3.18-3.26 or so, depending on what you need. Which is why scikit-build-core provides an optional backport for 3.15+).

[henryiii]

This produces:

Could NOT find NumPy (missing: NumPy_CONV_TEMPLATE_EXECUTABLE
  NumPy_FROM_TEMPLATE_EXECUTABLE) 

IMO NumPy changes should be broken out.

[hmaarrfk]

Sorry for the delay on my part, i was circling around to this since I remembered your suggestions and was surprised to see that you had merged them in, i have no problem with this. i decided to rebase and push.

One final thing: I want to make sure that you are still interested in Python 3.9 in light of SPEC 0