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

flexdown
0.1.0a9

This version was deleted from PyPI around 2023-10-16. Installing fails with:
$ pip3 install flexdown==0.1.0a9 ERROR: Could not find a version that satisfies the requirement flexdown==0.1.0a9
View other deleted versions of flexdown

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/2023-10-15/ \ flexdown==0.1.0a9
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:
flexdown-0.1.0a9-py3-none-any.whl (11.1KB)
flexdown-0.1.0a9.tar.gz (6.8KB)