New comment by TinfoilSubmarine on void-packages repository https://github.com/void-linux/void-packages/issues/33788#issuecomment-953301356 Comment: Some further investigation: `setuptools` dropped support for `use_2to3` in 58.x.x. Since nose's setup.py relies on this, it is failing an import and building without running 2to3 and generating valid python3 code. I guess the way forward for now is to manually prepare a patch for `python3-nose`, unless there are any better ideas?