update to macos-latest

[mattip]

• I updated the package version in pyproject.toml and made sure the first 3 numbers match git describe --tags --abbrev=8 in OpenBLAS at the OPENBLAS_COMMIT. If I did not update OPENBLAS_COMMIT, I incremented the wheel build number (i.e. 0.3.29.0.0 to 0.3.29.0.1)

This moves the macos builds from a x86_64 host to an arm64 host, hopefully it will Just Work

[mattip]

CI is passing. It took a bit to work around limitations in the gfortran_install and multibuild subrepos, maybe we should switch to the scipy strategy of using the conda-forge compilers package instead

[rgommers]

Ah you switched all the builds to macos-latest; I had thought you'd leave the x86-64 builds on macos-13 because those are x86-64 runners. I have no idea if and when GitHub will deprecate those.

maybe we should switch to the scipy strategy of using the conda-forge compilers package instead

It's not a whole lot better (SDKROOT messing around still required), and actually it looks like for arm64 we're pulling in some other gfortran:

https://github.com/scipy/scipy/blob/9ae478ddaec6e1a71ca31624199e1ea171835eec/tools/wheels/cibw_before_build_macos.sh#L48

[rgommers]

The more impactful maintenance improvement is probably to switch to cibuildwheel

[rgommers]

I think we can only really know if this worked when building numpy/scipy wheels against these new versions, but the changes and CI logs LGTM.

[rgommers]

(I'll leave the merging up to you, since I didn't follow along very closely)

[mattip]

Thanks for the review

The more impactful maintenance improvement is probably to switch to cibuildwheel

Good idea, I will open an issue