Here goes first: trying to run

pants test --test-use-coverage

fails on M1 with a message such as

1.) The wheel tags for coverage 5.5 are cp38-cp38-macosx_10_14_arm64 which do not match the supported tags of /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/bin/python3.8:

Hello! I am an M1 user too, and I have had much more success using Python 3.9 or newer. 3.8 only has partial support If you have not yet, you will want to change your interpreter constraints to 3.9 (or greater) https://www.pantsbuild.org/docs/python-interpreter-compatibility#setting-the-default-python-version If you cannot yet change the setting for your entire project, you can use a pants. RC file to override your local config https://www.pantsbuild.org/docs/options#pantsrc-file

Thanks Eric for replying! I already changed to >= 3.9, which did not help.

ohhhh try https://www.pantsbuild.org/docs/reference-coverage-py#section-interpreter-constraints

Thanks @hundreds-father-404, that did the trick!