New comment by ahesford on void-packages repository https://github.com/void-linux/void-packages/pull/30699#issuecomment-833514258 Comment: Looks like the `pre_build` function is a no-op and `install_requires` does not list `setuptools`; please remove `python3-setuptools` from `depends`. Also, the tagged release lists the wrong version in the package: https://github.com/WoLpH/numpy-stl/issues/173 You might want to patch `stl/__about__.py` to fix this, or wait to see if the author retags or cuts a point release.