Your fault for using Debian really. 
Their packages model is hopelessly outdated but they are clinging to it with a death grip.
Here I am a bit envious. I really want that but hate Nix with all my heart and am still waiting for Manjaro to have their own immutable distro variant. Which they already have, come to think of it, I’ve been too lazy and sick to try it though. But that’s definitely how it should have always been. No idea what took the collective world so long to figure out elementary good practices…
