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

cim-graph
2023.5.1a2

This version was deleted from PyPI around 2023-12-20. Installing fails with:
$ pip3 install cim-graph==2023.5.1a2 ERROR: Could not find a version that satisfies the requirement cim-graph==2023.5.1a2
View other deleted versions of cim-graph

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/2023-12-19/ \ cim-graph==2023.5.1a2
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
cim_graph-2023.5.1a2-py3-none-any.whl (278.4KB)
cim_graph-2023.5.1a2.tar.gz (222.9KB)