All applications configurations ever used
purge-old-kernels, what do I need old kernels for?
docker-composeif there's a never version available
Python"system" wide packages
Neovimplugins, removes old one and install those that were added previously (if needed)
ctagsthat I built myself for these dotfiles
My dotfiles are evaluated in the CI system that ensures me that, if needed, I will be able to deploy them in the fresh system without having too much to worry about.