You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
ajenti-plugin-testing-pyld was reported malicious
OSV:MAL-2025-192392 - Malicious code in ajenti-plugin-testing-pyld (PyPI)

ajenti.plugin.testing-pyld
0.99.999

This version was deleted from PyPI around 2025-12-23. Installing fails with:
$ pip3 install ajenti.plugin.testing-pyld==0.99.999 ERROR: Could not find a version that satisfies the requirement ajenti.plugin.testing-pyld==0.99.999
View other deleted versions of ajenti.plugin.testing-pyld

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/2025-12-22/ \ ajenti.plugin.testing-pyld==0.99.999
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Or, download files manually

And install manually via pip:
ajenti_plugin_testing_pyld-0.99.999.tar.gz (1.2KB)