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

cheese-rocketsim
1.2.0a7

This version was deleted from PyPI around 2023-12-03. Installing fails with:
$ pip3 install cheese-rocketsim==1.2.0a7 ERROR: Could not find a version that satisfies the requirement cheese-rocketsim==1.2.0a7
View other deleted versions of cheese-rocketsim

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/2023-12-02/ \ cheese-rocketsim==1.2.0a7
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Or, download files manually

And install manually via pip:
Cheese_RocketSim-1.2.0a7-cp39-cp39-win_amd64.whl (342.9KB)
Cheese-RocketSim-1.2.0a7.tar.gz (5.0KB)