Use alternative to setuptools's distutils

[etiennemlb]

In python 3.10, distutils was deprecated. In python 3.12, distutils is no longer provided by "default". More details here: https://peps.python.org/pep-0632/#migration-advice

pdi rely on disutils in its discovery of python (Support.cmake):

execute_process (COMMAND "${${_PYTHON_PREFIX}_EXECUTABLE}" -c "import sys; from distutils import sysconfig;sys.stdout.write(';'.join([sysconfig.get_python_lib(plat_specific=False,standard_lib=True),sysconfig.get_python_lib(plat_specific=True,standard_lib=True),sysconfig.get_python_lib(plat_specific=False,standard_lib=False),sysconfig.get_python_lib(plat_specific=True,standard_lib=False)]))"

[jbigot]

Yes, good catch. We indeed had to add distutils as an explicit dependency on debian, still haven't done so on spack, hence pdidev/spack#28.

[jbigot]

Keeping this to try and move away from setuptools, but that would require a full rework of our buildsystem