Interesting that the release notes for pynormaliz [1] state: The source code of v2.22 is identical to v2.21 I will re-assign this bug to pynormaliz and remove pynormaliz from testing, in the hopes of unblocking normaliz, macaulay2 and polymake, and finishing off the flint transition. [1] https://github.com/Normaliz/PyNormaliz/releases/tag/v2.22