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

declearn
2.6.0

This version was deleted from PyPI around 2024-08-10. Installing fails with:
$ pip3 install declearn==2.6.0 ERROR: Could not find a version that satisfies the requirement declearn==2.6.0
View other deleted versions of declearn

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/2024-08-09/ \ declearn==2.6.0
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:
declearn-2.6.0-py3-none-any.whl (493.3KB)
declearn-2.6.0.tar.gz (551.0KB)