I wish that there would be a 3rd option: ship C code generated by
Cython *but* run Cython if this C code "looks" outdated, for example
if building the C code fails with a compiler error.

So people using stable Python versions like Python 3.10 would not need
Cython, but people testing the "next Python" (Python 3.11) would not
have to manually removed generated C code.

--

In Fedora RPM packages of Python projects, we have to force manually
running Cython. For example, the numpy package does: "rm PKG-INFO"
with the comment: "Force re-cythonization (ifed for PKG-INFO presence
in setup.py)".
https://src.fedoraproject.org/rpms/numpy/blob/rawhide/f/numpy.spec#_107

In my pythonci project, I use a worse hack, I search for generated C
files and remove them manually with this shell command:

    rm -f -v $(grep -rl '/\* Generated by Cython') PKG-INFO

This command searchs for the pattern "/* Generated by Cython".

Victor
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