cantera: build riscv64 wheels for 3.2.0

[luhenry]

• Package: cantera
• Version: 3.2.0
• Source: https://github.com/Cantera/cantera
• Docs: https://cantera.org

Compiles Cantera's C++ core and its Cython bindings into one extension. Upstream publishes no riscv64 wheel.

Mirrors upstream's python-package.yml.

Differs from upstream

• Dependencies built in before-all from upstream's base-image superbuild - no riscv64 image
• build-frontend = "build" instead of build[uv] - no host uv on the runner

Testing

• test/ staged through test-sources instead of the /host mount
• cp314t runs without the pandas extra (no free-threaded riscv64 wheel), which skips test_onedim.py

License: Wheel bundles fmt and yaml-cpp (MIT), HDF5, zlib, libaec, OpenBLAS, SUNDIALS (BSD-style), Eigen (MPL-2.0), HighFive and Boost (BSL-1.0) and libgfortran (GPL-3.0 with runtime exception); upstream ships no licence text for them, so the build adds it.

Patches

• 0001-python_sdist-ship-licence-files-of-bundled-libraries.patch - To upstream [needs a companion base-image change]. Without it the bundled licences are not packaged. Not riscv64-specific.
• 0002-Python-Fix-species-slicing-error-with-Numpy-2.4.0-dev.patch - Backport [Fix species slicing error with Numpy 2.4.0 dev version Cantera/cantera#2063]. Without it species slicing raises cannot resize an array on Python 3.14 with NumPy 2.4+. Reproduces on x86_64 with upstream's own wheel.

[github-actions]

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2026-09-26 09:58 UTC