I have suspicion that the problem is around python 3.9. There is a new release of setuptools, version 65.6.0 (released 19.11.2022), which subtly changed output behavior for setup.py execution.
I have suspicion that the problem is around python 3.9. There is a new release of setuptools, version 65.6.0 (released 19.11.2022), which subtly changed output behavior for setup.py execution.