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

emerge
1.2a0

This version was deleted from PyPI around 2023-09-26. Installing fails with:
$ pip3 install emerge==1.2a0 ERROR: Could not find a version that satisfies the requirement emerge==1.2a0
View other deleted versions of emerge

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/2023-09-25/ \ emerge==1.2a0
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:
EMeRGE-1.2a0-py3-none-any.whl (78.9KB)
EMeRGE-1.2a0.tar.gz (266.5KB)