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

kelp-o-matic
0.5.4rc3

This version was deleted from PyPI around 2024-01-21. Installing fails with:
$ pip3 install kelp-o-matic==0.5.4rc3 ERROR: Could not find a version that satisfies the requirement kelp-o-matic==0.5.4rc3
View other deleted versions of kelp-o-matic

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/2024-01-20/ \ kelp-o-matic==0.5.4rc3
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Or, download files manually

And install manually via pip:
kelp_o_matic-0.5.4rc3-py3-none-any.whl (35.3MB)
kelp_o_matic-0.5.4rc3.tar.gz (35.3MB)