migrate to pyproject.toml ?

[teto]

while trying to patch this project, I had to edit the setup.py which triggered several warnings (about the license not in spdx format, a recommendation to use pyproject.toml), I wonder if there is a pyproject branch I could test ?

[teto]

I reran the setup instructions on another computing: capturing the actual warnings:

Warning: This version matches the current published version.
If you are building a release, the publish will not succeed.
Downloading shaders...
Building release package.
/nix/store/jjqasz9apcfs8x1jm71dv81ayaqvfrln-python3.13-setuptools-80.9.0/lib/python3.13/site-packages/setuptools/dist.py:759: SetuptoolsDeprecationWarning: License classifiers are deprecated.
!!

        ********************************************************************************
        Please consider removing the following classifiers in favor of a SPDX license expression:

        License :: OSI Approved :: GNU General Public License v3 (GPLv3)

        See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
        ********************************************************************************

!!
  self._finalize_license_expression()
/nix/store/jjqasz9apcfs8x1jm71dv81ayaqvfrln-python3.13-setuptools-80.9.0/lib/python3.13/site-packages/setuptools/_distutils/cmd.py:90: SetuptoolsDeprecationWarning: setup.py install is deprecated.
!!

        ********************************************************************************
        Please avoid running ``setup.py`` directly.
        Instead, use pypa/build, pypa/installer or other
        standards-based tools.

        This deprecation is overdue, please update your project and remove deprecated
        calls to avoid build errors in the future.

        See https://blog.ganssle.io/articles/2021/10/setup-py-deprecated.html for details.
        ********************************************************************************

!!
  self.initialize_options()

[vidonnus]

@teto -- feel free to test 660c55f!