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

cogent-base
0.1.17

This version was deleted from PyPI around 2025-10-16. Installing fails with:
$ pip3 install cogent-base==0.1.17 ERROR: Could not find a version that satisfies the requirement cogent-base==0.1.17
View other deleted versions of cogent-base

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/2025-10-15/ \ cogent-base==0.1.17
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:
cogent_base-0.1.17-py3-none-any.whl (63.3KB)
cogent_base-0.1.17.tar.gz (38.2KB)