You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
qt-main was reported malicious
OSV:MAL-2025-192349 - Malicious code in qt-main (PyPI)

qt-main

This package was deleted from PyPI around 2025-12-03. Installing fails with:
$ pip3 install qt-main ERROR: Could not find a version that satisfies the requirement qt-main (from versions: none) ERROR: No matching distribution found for qt-main

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pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2025-12-02/ \ qt-main
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Or, download files manually

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0.0.0
5.15.2