{...}: {
  programs.ncmpcpp = {
    enable = true;
    bindings = [
      { key = "j"; command = "scroll_down"; }
      { key = "k"; command = "scroll_up"; }
      { key = "J"; command = [ "select_item" "scroll_down" ]; }
      { key = "K"; command = [ "select_item" "scroll_up" ]; }
    ];
    mpdMusicDir = "/data/music";
  };
}