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

mysticml
0.5.4

This version was deleted from PyPI around 2024-01-25. Installing fails with:
$ pip3 install mysticml==0.5.4 ERROR: Could not find a version that satisfies the requirement mysticml==0.5.4
View other deleted versions of mysticml

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/2024-01-24/ \ mysticml==0.5.4
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Or, download files manually

And install manually via pip:
mysticML-0.5.4-py3-none-any.whl (8.6KB)
mysticML-0.5.4.tar.gz (5.1KB)