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

atk-common
3.26.0

This version was deleted from PyPI around 2026-03-11. Installing fails with:
$ pip3 install atk-common==3.26.0 ERROR: Could not find a version that satisfies the requirement atk-common==3.26.0
View other deleted versions of atk-common

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/2026-03-10/ \ atk-common==3.26.0
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Or, download files manually

And install manually via pip:
atk_common-3.26.0-py3-none-any.whl (45.7KB)
atk_common-3.26.0.tar.gz (19.8KB)