{
  config,
  lib,
  pkgs,
  ...
}:
# mako as the notification daemon: toasts, a do-not-disturb mode, and history recall.
let
  execBind = key: command: {
    _args = [
      key
      (luaCall "hl.dsp.exec_cmd" [ command ])
    ];
  };
  luaCall =
    function: args:
    lib.generators.mkLuaInline "${function}(${lib.concatMapStringsSep ", " toLua args})";

  user = config.user.name;

  makoctl = "${pkgs.mako}/bin/makoctl";

  toLua = lib.generators.toLua { };
in
{
  options.modules.desktop.session.mako.enable = lib.mkEnableOption "the mako notification daemon";

  config = lib.mkIf config.modules.desktop.session.mako.enable {
    home-manager.users.${user} = {
      # Colors and the popup font come from Stylix's mako target, so only
      # behaviour is set here.
      services.mako = {
        enable = true;

        settings = {
          # Toasts auto-dismiss into history rather than lingering.
          # mako's own default of 0 leaves every notification on screen until acted on.
          default-timeout = 5000;

          # The do-not-disturb mode.
          # Invisible hides the toasts but still records them to history.
          # Missed notifications can therefore be recalled.
          "mode=dnd".invisible = true;
        };
      };

      # Recall the last notification from history, keyboard-only like the rest
      # of the session.
      wayland.windowManager.hyprland.settings.bind = [
        (execBind "SUPER + N" "${makoctl} restore")
      ];
    };
  };
}