In the previous article we walked through how to set up our very own Nix binary cache. It’s great being able to run attic push system /run/current-system on whichever machine we are currently using, but the the chances are that if you use Nix to manage your system configurations, you have a system configuration monorepo, and depending on how many machines and architectures you are targeting, it can quickly become tiresome to manually push to the cache from each of them.