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

postquantum-feldman-vss
0.7.5b0

This version was deleted from PyPI around 2025-06-07. Installing fails with:
$ pip3 install postquantum-feldman-vss==0.7.5b0 ERROR: Could not find a version that satisfies the requirement postquantum-feldman-vss==0.7.5b0
View other deleted versions of 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==0.7.5b0
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Or, download files manually

And install manually via pip:
postquantum_feldman_vss-0.7.5b0-py3-none-any.whl (7.1KB)
postquantum_feldman_vss-0.7.5b0.tar.gz (7.4KB)