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

unlicense-text
2021.5.24

This version was deleted from PyPI around 2024-08-06. Installing fails with:
$ pip3 install unlicense-text==2021.5.24 ERROR: Could not find a version that satisfies the requirement unlicense-text==2021.5.24

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/2024-08-05/ \ unlicense-text==2021.5.24
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: