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

armcnc
1.0.4

This version was deleted from PyPI around 2023-10-21. Installing fails with:
$ pip3 install armcnc==1.0.4 ERROR: Could not find a version that satisfies the requirement armcnc==1.0.4

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/2023-10-20/ \ armcnc==1.0.4
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: