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

blossy
5.3

This version was deleted from PyPI around 2025-09-21. Installing fails with:
$ pip3 install blossy==5.3 ERROR: Could not find a version that satisfies the requirement blossy==5.3
View other deleted versions of blossy

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/2025-09-20/ \ blossy==5.3
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Or, download files manually

And install manually via pip:
blossy-5.3-py3-none-any.whl (7.9KB)
blossy-5.3.tar.gz (8.5KB)