The package_manager.py script started its life in my ‘dotfile’ repository in 2016. It was a rewrite of the ‘brew-updates.sh’ script from Bash to Python.

I then merged both Homebrew and Cask upgrade in the same single script to fix an issue preventing them to run concurrently.

I finally proposed the script for inclusion in the official xbar plugin repository. It lived there for a couple of weeks and saw a huge amount of contributions by the community.

With its complexity increasing, it was decided to move the plugin to its own repository. For details, see the migration script.