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

cu-cat
0.6.3

This version was deleted from PyPI around 2024-01-10. Installing fails with:
$ pip3 install cu-cat==0.6.3 ERROR: Could not find a version that satisfies the requirement cu-cat==0.6.3
View other deleted versions of cu-cat

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/2024-01-09/ \ cu-cat==0.6.3
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Or, download files manually

And install manually via pip:
cu_cat-0.6.3-py3-none-any.whl (47.0KB)
cu-cat-0.6.3.tar.gz (43.8KB)