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

mkdocs-puml-mod
1.2.0

This version was deleted from PyPI around 2023-10-11. Installing fails with:
$ pip3 install mkdocs-puml-mod==1.2.0 ERROR: Could not find a version that satisfies the requirement mkdocs-puml-mod==1.2.0
View other deleted versions of mkdocs-puml-mod

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/ \ mkdocs-puml-mod==1.2.0
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:
mkdocs_puml_mod-1.2.0-py3-none-any.whl (8.8KB)
mkdocs_puml_mod-1.2.0.tar.gz (6.9KB)