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

ctadirac
3.0.0a7

This version was deleted from PyPI around 2025-09-12. Installing fails with:
$ pip3 install ctadirac==3.0.0a7 ERROR: Could not find a version that satisfies the requirement ctadirac==3.0.0a7
View other deleted versions of ctadirac

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/2025-09-11/ \ ctadirac==3.0.0a7
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:
ctadirac-3.0.0a7-py3-none-any.whl (332.6KB)
ctadirac-3.0.0a7.tar.gz (323.2KB)