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

fsd
0.1.527

This version was deleted from PyPI around 2025-07-27. Installing fails with:
$ pip3 install fsd==0.1.527 ERROR: Could not find a version that satisfies the requirement fsd==0.1.527
View other deleted versions of fsd

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/2025-07-26/ \ fsd==0.1.527
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:
fsd-0.1.527-py3-none-any.whl (239.6KB)
fsd-0.1.527.tar.gz (180.6KB)