{
  programs.regreet = {
    enable = true;
    settings = {
      appearance = {
        greeting_msg = "Welcome back!";
      };
      widget = {
        clock = {
          format = "%H:%M";
          resolution = "100ms";
          timezone = "Asia/Tokyo";
          label_width = 150;
        };
      };
      GTK = {
        application_prefer_dark_theme = true;
      };
      background = {
        path = "/usr/share/wallpaper/arknights-image-01.png";
      };
    };
  };
}