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

onyx-extension
0.4.9

This version was deleted from PyPI around 2025-02-13. Installing fails with:
$ pip3 install onyx-extension==0.4.9 ERROR: Could not find a version that satisfies the requirement onyx-extension==0.4.9
View other deleted versions of onyx-extension

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/2025-02-12/ \ onyx-extension==0.4.9
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:
onyx_extension-0.4.9-py3-none-any.whl (477.8KB)
onyx_extension-0.4.9.tar.gz (512.9KB)