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

cascadia-os
2026.5

This version was deleted from PyPI around 2026-08-05. Installing fails with:
$ pip3 install cascadia-os==2026.5 ERROR: Could not find a version that satisfies the requirement cascadia-os==2026.5
View other deleted versions of cascadia-os

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/2026-08-04/ \ cascadia-os==2026.5
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Or, download files manually

And install manually via pip:
cascadia_os-2026.5-py3-none-any.whl (368.3KB)
cascadia_os-2026.5.tar.gz (403.3KB)