Use pyproject.toml and Github Actions

[alexfikl]

This ports from setup.py to pyproject.toml and adds workflows for Github Actions. For the CI, you can see a run here (figured out I can just run it on my fork :\)
https://github.com/alexfikl/jitcxde_common/actions/runs/12017074559

As suggested the actions test both gcc and clang. I haven't managed to pass the OpenMP tests with clang locally either, so not quite sure that still works. Have you tried it recently? It seems to pass on an older ubuntu, so maybe there's a dependency missing..

xref: neurophysik/CHSPy#5

[Wrzlprmft]

I haven't managed to pass the OpenMP tests with clang locally either, so not quite sure that still works. Have you tried it recently? It seems to pass on an older ubuntu, so maybe there's a dependency missing..

Both, OpenMP and Clang work fine for me on Arch. I also think a dependency might be missing. I am surprised that any of this works without installing additional dependencies. The key error appears to be:

/usr/bin/ld: cannot find -lomp: No such file or directory

[alexfikl]

/usr/bin/ld: cannot find -lomp: No such file or directory

Yeah, that was it. It was just missing the LLVM OpenMP library, which comes separately. The clang tests now pass both locally and on the CI:
https://github.com/alexfikl/jitcxde_common/actions/runs/12026996942