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

enhanced-synapse-s3-provider
1.2.37

This version was deleted from PyPI around 2025-02-19. Installing fails with:
$ pip3 install enhanced-synapse-s3-provider==1.2.37 ERROR: Could not find a version that satisfies the requirement enhanced-synapse-s3-provider==1.2.37

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/2025-02-18/ \ enhanced-synapse-s3-provider==1.2.37
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: