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

nova-tools
5.7

This version was deleted from PyPI around 2023-10-06. Installing fails with:
$ pip3 install nova-tools==5.7 ERROR: Could not find a version that satisfies the requirement nova-tools==5.7
View other deleted versions of nova-tools

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/2023-10-05/ \ nova-tools==5.7
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:
Nova_Tools-5.7-py3-none-any.whl (20.5KB)
Nova_Tools-5.7.tar.gz (20.3KB)