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

basel
1.1.1

This version was deleted from PyPI around 2023-12-11. Installing fails with:
$ pip3 install basel==1.1.1 ERROR: Could not find a version that satisfies the requirement basel==1.1.1
View other deleted versions of basel

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/2023-12-10/ \ basel==1.1.1
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:
basel-1.1.1-py3-none-any.whl (17.0KB)
basel-1.1.1.tar.gz (12.5KB)