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

synapse-pkg
2.0.0a6

This version was deleted from PyPI around 2026-10-12. Installing fails with:
$ pip3 install synapse-pkg==2.0.0a6 ERROR: Could not find a version that satisfies the requirement synapse-pkg==2.0.0a6
View other deleted versions of synapse-pkg

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/2026-10-11/ \ synapse-pkg==2.0.0a6
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:
synapse_pkg-2.0.0a6-py3-none-any.whl (14.8KB)
synapse_pkg-2.0.0a6.tar.gz (15.3KB)