postquantum-feldman-vss
This package was deleted from PyPI around 2025-06-07. Installing fails with:
$ pip3 install postquantum-feldman-vss
ERROR: Could not find a version that satisfies the requirement postquantum-feldman-vss (from versions: none)
ERROR: No matching distribution found for postquantum-feldman-vss

Install through StableBuild
You can install this package from StableBuild's PyPI snapshots from before the version was deleted:
pip3 install \
-i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-06-06/ \
postquantum-feldman-vss
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)