Windows -> Solaris -> Windows -> Gentoo -> Arch -> NixOS

I feel much more satisfaction pouring hours into NixOS over doing the same on Gentoo and Arch. The hours on nix are in a source file I can carry around. The hours on Gentoo and Arch I'm doomed to forget and have to repeat.

I do miss the AUR though. I haven't been able to package a rust program that has a build with a transitive dependency that expects internet access (https://github.com/foundry-rs/foundry). Something something sandbox, crate2nix. But a frivolous install of a little binary that isn't packaged is not necessarily an easy endeavour.

Overall I'm very happy. Nix unstable feels equivalent to Arch more or less. You can pull in master with flakes easily enough too.