NumPy now supports Python 3.12

[radarhere]

Helps #6941.

With the release of NumPy 1.26.0, NumPy supports Python 3.12 - https://github.com/numpy/numpy/releases/tag/v1.26.0

[hugovk]

Hmm, NumPy has wheels for PyPy3.9 but not for PyPy3.10:

• numpy-1.26.0-pp39-pypy39_pp73-win_amd64.whl
• numpy-1.26.0-pp39-pypy39_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
• numpy-1.26.0-pp39-pypy39_pp73-macosx_10_9_x86_64.whl

https://pypi.org/project/numpy/1.26.0/#files

[hugovk]

I asked NumPy about PyPy3.10 wheels: numpy/numpy#24728

[radarhere]

I've added commits to fix building on PyPy 3.10 in the meanwhile.

As for Python 3.9 on Cygwin, the initial error is "Failed to build ninja".
Installing that, I get "No BLAS library detected! Install one, or use the allow-noblas build option".

https://stackoverflow.com/questions/73659464/does-openblas-devel-exist-for-cygwin tells me that there is no devel openblas package for Cygwin, so I attempted to use 'allow-noblas'.

To do this, numpy/numpy#24703 suggests

• pip install numpy -C-Dallow-noblas=true, but that gives 'meson-python: error: Unknown option "-Dallow-noblas"'
  or
• pip install numpy --config-settings=setup-args="-Dallow-noblas=true", but that gives '../../meson.build:1:0: ERROR: Value true
  is not boolean (true or false).'. That appears to be a problem with the line ending, which makes me think it is specific to Cygwin.

Instead, I have pushed a commit here to simply not use NumPy 1.26 on Cygwin.

[hugovk]

Thanks!

[radarhere]

The NumPy pinning has been replaced in #7880 with the packaged NumPy versions instead.