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

syndrilla
2025.8.28

This version was deleted from PyPI around 2025-09-16. Installing fails with:
$ pip3 install syndrilla==2025.8.28 ERROR: Could not find a version that satisfies the requirement syndrilla==2025.8.28
View other deleted versions of syndrilla

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/2025-09-15/ \ syndrilla==2025.8.28
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:
syndrilla-2025.8.28-py3-none-any.whl (56.8KB)
syndrilla-2025.8.28.tar.gz (1.4MB)