While cibuildwheel can build CPython 3.8 universal2/arm64 wheels, we cannot test the arm64 part of them, even when running on an Apple Silicon machine. This is because we use the x86_64 installer of CPython 3.8. See the discussion in https://github.com/pypa/cibuildwheel/pull/1169 for the details. To silence this warning, set `CIBW_TEST_SKIP: "cp38-macosx_*:arm64"`.

llvm 18.1.6 is already installed and up-to-date. To reinstall 18.1.6, run: brew reinstall llvm

libomp 18.1.6 is already installed and up-to-date. To reinstall 18.1.6, run: brew reinstall libomp

fftw 3.3.10_1 is already installed and up-to-date. To reinstall 3.3.10_1, run: brew reinstall fftw

eigen 3.4.0_1 is already installed and up-to-date. To reinstall 3.4.0_1, run: brew reinstall eigen

llvm 18.1.6 is already installed and up-to-date. To reinstall 18.1.6, run: brew reinstall llvm

libomp 18.1.6 is already installed and up-to-date. To reinstall 18.1.6, run: brew reinstall libomp

fftw 3.3.10_1 is already installed and up-to-date. To reinstall 3.3.10_1, run: brew reinstall fftw

eigen 3.4.0_1 is already installed and up-to-date. To reinstall 3.4.0_1, run: brew reinstall eigen

llvm 18.1.6 is already installed and up-to-date. To reinstall 18.1.6, run: brew reinstall llvm