nixos_config/home/modules/services/mako.nix

{ ... }:
{
  services.mako = {
    enable = true;
    settings = {
      actions = true;
      anchor = "top-center";
      border-radius = 0;
      default-timeout = 10000;
      height = 100;
      width = 600;
      icons = true;
      ignore-timeout = false;
      layer = "overlay";
      margin = 10;
      markup = true;
    };
  };
}