poetry_build.py

import os
import shutil
from distutils.command.build_ext import build_ext
from distutils.core import Distribution, Extension

from Cython.Build import cythonize


def build():
    ext_modules = cythonize(
        module_list=[
            Extension(
                name="*",
                sources=["aoc2024/*c.py"],
            ),
        ],
        compiler_directives={"language_level": 3},
    )

    distribution = Distribution({"name": "extended", "ext_modules": ext_modules})
    distribution.package_dir = "extended"

    cmd = build_ext(distribution)
    cmd.ensure_finalized()
    cmd.run()

    # Copy built extensions back to the project
    for output in cmd.get_outputs():
        relative_extension = os.path.relpath(output, cmd.build_lib)
        shutil.copyfile(output, relative_extension)
        mode = os.stat(relative_extension).st_mode
        mode |= (mode & 0o444) >> 2
        os.chmod(relative_extension, mode)


if __name__ == "__main__":
    build()