You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
graphex was reported malicious
OSV:MAL-2025-6517 - Malicious code in graphex (PyPI)

graphex

This package was deleted from PyPI around 2025-06-18. Installing fails with:
$ pip3 install graphex ERROR: Could not find a version that satisfies the requirement graphex (from versions: none) ERROR: No matching distribution found for graphex

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pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-06-17/ \ graphex
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Or, download files manually

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3.5.7
3.5.8