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

pupa-backend
0.0.72

This version was deleted from PyPI around 2026-08-05. Installing fails with:
$ pip3 install pupa-backend==0.0.72 ERROR: Could not find a version that satisfies the requirement pupa-backend==0.0.72
View other deleted versions of pupa-backend

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/2026-08-04/ \ pupa-backend==0.0.72
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Or, download files manually

And install manually via pip:
pupa_backend-0.0.72-py3-none-any.whl (167.7KB)
pupa_backend-0.0.72.tar.gz (432.7KB)