{ ... }: {
  programs.waybar.enable = true;
  programs.waybar.settings = {
    mainBar = {
      height = 35;
      spacing = 4;
      modules-left = [ ];
      modules-center = [
        "clock"
      ];
      modules-right = [
        "privacy"
        "pulseaudio"
        "cpu"
        "memory"
        "tray"
      ];
      clock = {
        format = "{:%a %F %H:%M}";
        "tooltip-format" = "<tt><small>{calendar}</small></tt>";
        "calendar" = {
          "mode" = "year";
          "mode-mon-col" = 3;
          "weeks-pos" = "right";
          "on-scroll" = 1;
          "format" = {
            "months" = "<span color='#ffead3'><b>{}</b></span>";
            "days" = "<span color='#ecc6d9'><b>{}</b></span>";
            "weeks" = "<span color='#99ffdd'><b>W{}</b></span>";
            "weekdays" = "<span color='#ffcc66'><b>{}</b></span>";
            "today" = "<span color='#ff6699'><b><u>{}</u></b></span>";
          };
        };
        "actions" = {
          "on-click-right" = "mode";
          "on-scroll-up" = "shift_up";
          "on-scroll-down" = "shift_down";
        };
      };
      pulseaudio = {
        # "scroll-step": 1, // %, can be a float
        "format" = "{volume}% {icon} {format_source}";
        "format-bluetooth" = "{volume}% {icon} {format_source}";
        "format-bluetooth-muted" = " {icon} {format_source}";
        "format-muted" = " {format_source}";
        "format-source" = "{volume}% ";
        "format-source-muted" = "";
        "format-icons" = {
          "headphone" = "";
          "hands-free" = "";
          "headset" = "";
          "phone" = "";
          "portable" = "";
          "car" = "";
          "default" = [ "" "" "" ];
        };
        "on-click" = "pavucontrol";
      };

      cpu = {
        format = "{usage}% ";
        tooltip = false;
      };
      memory = {
        format = "{}% ";
      };
      tray = {
        spacing = 10;
      };

    };
  };
}