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

owlplanner
2026.5.16

This version was deleted from PyPI around 2026-06-17. Installing fails with:
$ pip3 install owlplanner==2026.5.16 ERROR: Could not find a version that satisfies the requirement owlplanner==2026.5.16
View other deleted versions of owlplanner

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/2026-06-16/ \ owlplanner==2026.5.16
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:
owlplanner-2026.5.16-py3-none-any.whl (275.6KB)
owlplanner-2026.5.16.tar.gz (6.9MB)