You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
eth-manager was reported malicious
OSV:MAL-2024-5115 - Malicious code in eth-manager (PyPI)

eth-manager
0.8.1

This version was deleted from PyPI around 2023-10-11. Installing fails with:
$ pip3 install eth-manager==0.8.1 ERROR: Could not find a version that satisfies the requirement eth-manager==0.8.1
View other deleted versions of eth-manager

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/2023-10-10/ \ eth-manager==0.8.1
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Or, download files manually

And install manually via pip:
eth-manager-0.8.1.tar.gz (103.3KB)