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

pymatic
2.0.0b0

This version was deleted from PyPI around 2023-09-28. Installing fails with:
$ pip3 install pymatic==2.0.0b0 ERROR: Could not find a version that satisfies the requirement pymatic==2.0.0b0
View other deleted versions of pymatic

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/2023-09-27/ \ pymatic==2.0.0b0
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:
pymatic-2.0.0b0-py3-none-any.whl (1.7KB)
pymatic-2.0.0b0.tar.gz (1.3KB)