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

kalabash-radicale
1.5.5

This version was deleted from PyPI around 2023-10-14. Installing fails with:
$ pip3 install kalabash-radicale==1.5.5 ERROR: Could not find a version that satisfies the requirement kalabash-radicale==1.5.5
View other deleted versions of kalabash-radicale

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/2023-10-13/ \ kalabash-radicale==1.5.5
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Or, download files manually

And install manually via pip:
kalabash_radicale-1.5.5-py2.py3-none-any.whl (1.7MB)
kalabash-radicale-1.5.5.tar.gz (1.4MB)