{
  pkgs,
  config,
  lib,
  ...
}:
let
  cfg = config.xyno.cli.fish;
in
{
  options.xyno.cli.fish.enable = lib.mkEnableOption "enable the fish shell with xynos config";
  config = lib.mkIf cfg.enable {
    programs.bash = {
      # auto spawn fish if interactive
      interactiveShellInit = ''
        if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
        then
          shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
          exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
        fi
      '';
    };
    environment.systemPackages = with pkgs; [
      fishPlugins.grc
      grc
    ];
    programs.direnv.enableFishIntegration = true;
    programs.fish.interactiveShellInit = ''
      set -g fish_key_bindings fish_vi_key_bindings
    '';
    programs.fish.enable = true;
  };
}