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

prommis
0.3.0rc0

This version was deleted from PyPI around 2025-12-24. Installing fails with:
$ pip3 install prommis==0.3.0rc0 ERROR: Could not find a version that satisfies the requirement prommis==0.3.0rc0
View other deleted versions of prommis

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/2025-12-23/ \ prommis==0.3.0rc0
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)

Or, download files manually

And install manually via pip:
prommis-0.3.0rc0-py3-none-any.whl (119.9KB)
prommis-0.3.0rc0.tar.gz (940.9KB)