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

valcheck
2.9.0

This version was deleted from PyPI around 2024-09-30. Installing fails with:
$ pip3 install valcheck==2.9.0 ERROR: Could not find a version that satisfies the requirement valcheck==2.9.0
View other deleted versions of valcheck

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/2024-09-29/ \ valcheck==2.9.0
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:
valcheck-2.9.0-py3-none-any.whl (27.5KB)
valcheck-2.9.0.tar.gz (23.4KB)