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

htree
2.1.1

This version was deleted from PyPI around 2025-12-22. Installing fails with:
$ pip3 install htree==2.1.1 ERROR: Could not find a version that satisfies the requirement htree==2.1.1
View other deleted versions of htree

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/2025-12-21/ \ htree==2.1.1
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:
htree-2.1.1-py3-none-any.whl (58.3KB)
htree-2.1.1.tar.gz (89.9KB)