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

lightning-gpt
0.1.0rc0

This version was deleted from PyPI around 2025-04-07. Installing fails with:
$ pip3 install lightning-gpt==0.1.0rc0 ERROR: Could not find a version that satisfies the requirement lightning-gpt==0.1.0rc0
View other deleted versions of lightning-gpt

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/2025-04-06/ \ lightning-gpt==0.1.0rc0
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Or, download files manually

And install manually via pip:
lightning_gpt-0.1.0rc0-py3-none-any.whl (132.3KB)
lightning_gpt-0.1.0rc0.tar.gz (257.7KB)