{
  config,
  lib,
  inputs,
  ...
}: let
  cfg = config.seth.shell.nushell;
  theme = "catppuccin-${config.catppuccin.flavour}";
in {
  options.seth.shell.nushell = {
    enable = lib.mkEnableOption "Nushell configuration";
  };

  config = lib.mkIf cfg.enable {
    programs = {
      nushell = {
        enable = true;

        configFile.text = ''
          def "nixgc" [] {
            sudo nix-collect-garbage -d; nix-collect-garbage -d
          }
        '';

        envFile.text = ''
          use ${inputs.nu-scripts}/themes/nu-themes/${theme}.nu
          $env.config.color_config = (${theme})
        '';

        inherit (config.home) shellAliases;
      };

      bash.initExtra = lib.mkAfter ''
        if [[ $(ps --no-header --pid=$PPID --format=comm) != "nu" && -z ''${BASH_EXECUTION_STRING} ]]; then
           exec ${lib.getExe config.programs.nushell.package}
        fi
      '';

      # builtin `ls` is good here!
      eza.enable = lib.mkForce false;
    };
  };
}