You're looking at StableBuild's Deleted PyPI mirror - where we index all deleted packages from the Python package registry.
eth-defi was reported malicious
OSV:MAL-2025-2958 - Malicious code in eth-defi (PyPI)

eth-defi
0.28.1

This version was deleted from PyPI around 2025-03-07. Installing fails with:
$ pip3 install eth-defi==0.28.1 ERROR: Could not find a version that satisfies the requirement eth-defi==0.28.1
View other deleted versions of eth-defi

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/2025-03-06/ \ eth-defi==0.28.1
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Or, download files manually

And install manually via pip:
eth_defi-0.28.1-py3-none-any.whl (20.1MB)
eth_defi-0.28.1.tar.gz (18.3MB)