You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
ensmallen was reported malicious
OSV:MAL-2026-5315 - Malicious code in ensmallen (PyPI)

ensmallen

This package was deleted from PyPI around 2026-06-08. Installing fails with:
$ pip3 install ensmallen ERROR: Could not find a version that satisfies the requirement ensmallen (from versions: none) ERROR: No matching distribution found for ensmallen

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pip3 install \ -i https://YOUR_API_KEY.pypimirror.stablebuild.com/2026-06-07/ \ ensmallen
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