Hi all, With distutils now removed from the stdlib in the Python 3.12 release cycle, the clock is ticking a bit for dealing with our build system situation. With SciPy's move to Meson now basically complete - there are always loose ends & improvements, but the 1.9 releases have gone well - it's time to look at NumPy doing the same thing. Scikit-image has also merged support for Meson, and Pandas is about to. So all the generic & Python packaging related things we need should be in place. NumPy does have some hairy stuff of course that those other projects don't have (lots of config checks and platform-specific behavior, extensive SIMD support). It shouldn't be too difficult to get a baseline build - Linux/macOS with baseline SIMD flags - working, but there'll be a long tail of things that are hard to test or will need to be upstreamed to Meson.
Here is a tracking issue where I wrote up a plan for how to approach the transition: https://github.com/numpy/numpy/issues/22546. Linked from there is a GitHub project board that we plan to use to divide up the work. And there is a `meson` branch in the repo with a start to the implementation. NumPy should default to building with Meson in the 1.25.0 release, which should also still build with `numpy.distutils`. And `numpy.distutils` will continue to be shipped for Python <3.12 for a while after that, until we determine that it's no longer needed. If anyone has ideas or concerns regarding the current plan, it'd be great to hear them - here or on the issue. Cheers, Ralf
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