slice-to-offset-range
This package was deleted from PyPI around 2025-07-30. Installing fails with:
$ pip3 install slice-to-offset-range
ERROR: Could not find a version that satisfies the requirement slice-to-offset-range (from versions: none)
ERROR: No matching distribution found for slice-to-offset-range

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/2025-07-29/ \
slice-to-offset-range
Sign up for StableBuild to get an API key (it's free and takes <60 seconds!)