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

xuance
1.0.6

This version was deleted from PyPI around 2023-12-28. Installing fails with:
$ pip3 install xuance==1.0.6 ERROR: Could not find a version that satisfies the requirement xuance==1.0.6
View other deleted versions of xuance

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/2023-12-27/ \ xuance==1.0.6
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:
xuance-1.0.6.tar.gz (1.2MB)