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

hyperquant
1.21

This version was deleted from PyPI around 2025-11-12. Installing fails with:
$ pip3 install hyperquant==1.21 ERROR: Could not find a version that satisfies the requirement hyperquant==1.21
View other deleted versions of hyperquant

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/2025-11-11/ \ hyperquant==1.21
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:
hyperquant-1.21-py3-none-any.whl (176.2KB)
hyperquant-1.21.tar.gz (355.9KB)