NixOS. Started with Yellow Dog Linux in 1998.
I don’t do everything through nix’s derivation system.
Many of my configs are just an outOfStoreSymlink to my configs in the same dotfiles repos. I don’t need every change wrapped in a derivation. Neovim is probably the largest. A few node projects for automations I’m fine using pnpm to manage. Nix still places everything but I can tweek those configs and commit in the same repo without a full blown activation.



Sounds like an origin story for recursion.