nix-config/modules/dunst/default.nix

{pkgs, ...}: {
  environment.systemPackages = [pkgs.libnotify];

  home-manager.sharedModules = [
    {
      services.dunst = {
        enable = true;

        settings = {
          global = {
            geometry = "1870x5-25+45";
            width = 350;
            separator_height = 5;
            padding = 24;
            horizontal_padding = 24;
            frame_width = 3;
            idle_threshold = 120;
            alignment = "center";
            word_wrap = "yes";
            transparency = 5;
            format = "<b>%s</b>: %b";
            markup = "full";
            min_icon_size = 128;
            max_icon_size = 128;
          };
        };
      };
    }
  ];
}