You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.

passagemath-cddlib
10.4.52

This version was deleted from PyPI around 2024-11-23. Installing fails with:
$ pip3 install passagemath-cddlib==10.4.52 ERROR: Could not find a version that satisfies the requirement passagemath-cddlib==10.4.52