nix setup – quick reference daily rebuild sudo nixos-rebuild switch --flake .#koinu update packages (pull newer nixpkgs / home-manager) nix flake update # refresh inputs sudo nixos-rebuild switch --flake .#koinu development shell nix develop # git, eza, bat, rg, nix fmt … first login shell change sudo chsh -s /run/current-system/sw/bin/zsh fawn