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

pqcrypto
0.2.0rc1

This version was deleted from PyPI around 2025-04-22. Installing fails with:
$ pip3 install pqcrypto==0.2.0rc1 ERROR: Could not find a version that satisfies the requirement pqcrypto==0.2.0rc1
View other deleted versions of pqcrypto

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/2025-04-21/ \ pqcrypto==0.2.0rc1
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
pqcrypto-0.2.0rc1-cp310-cp310-manylinux_2_17_i686.manylinux_2_5_i686.manylinux1_i686.manylinux2014_i686.whl (6.4MB)
pqcrypto-0.2.0rc1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (6.5MB)
pqcrypto-0.2.0rc1-cp310-cp310-musllinux_1_2_i686.whl (6.2MB)
pqcrypto-0.2.0rc1-cp310-cp310-musllinux_1_2_x86_64.whl (6.5MB)