Migrate to pyproject.toml.

PiperOrigin-RevId: 572726851
Change-Id: Iad254df70d15c962a5e58c8caf82b32530d26b06

python/make_sdist.sh

@@ -50,13 +50,13 @@ export PYTHONPATH="${old_pythonpath}"
 cp "${package_dir}"/../LICENSE .
 
 # Copy over CMake scripts.
-mkdir cmake
-cp "${package_dir}"/../cmake/*.cmake cmake
+mkdir mujoco/cmake
+cp "${package_dir}"/../cmake/*.cmake mujoco/cmake
 
 # Copy over Simulate source code.
 cp -r "${package_dir}"/../simulate mujoco
 
-python setup.py sdist --formats=gztar
+python -m build . --sdist
 tar -tf dist/mujoco-*.tar.gz
 popd