[BUG] Failed to build tarball on pypi for referencing `README.md` outside source dir

[hyx0329]

Describe the bug

The python build script is referencing README.md in parent directory, outside the source directory. This behavior will cause FileNotFoundError when building from source tarball.

xoscar/python/setup.py

Lines 132 to 137 in 4df7631

	# build long description
	def build_long_description():
	readme_path = os.path.join(os.path.dirname(os.path.abspath(repo_root)), "README.md")
	with open(readme_path, encoding="utf-8") as f:
	return f.read()

xoscar/python/setup.py

Lines 384 to 390 in 4df7631

	setup_options = dict(
	version=versioneer.get_version(),
	ext_modules=extensions + [XoscarCmakeExtension("xoscar_pygloo")],
	cmdclass={"build_ext": CMakeBuild},
	long_description=build_long_description(),
	long_description_content_type="text/markdown",
	)

To Reproduce

• Python 3.13
• venv with python -m venv .venv
• in venv run pip install xoscar==0.4.6

Got:

FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-q2lllpc4/README.md'

Expected behavior

No installation error.

Additional context

There's no prebuilt packages for py3.13, so pip falls back to building from source.

Building directly from latest code repository is fine.

[oOoOoOoll]

how to solve it？，i meet same problem

[Taki-Ta]

me too.

[Taki-Ta]

I reinstalled python with version 3.9 and that fixed the problem;
now my local python version is 3.9.18