{configVars, ...}: let
  email = configVars.email.user;
  domain = configVars.domains.xmpp;
in {
  security.acme = {
    acceptTerms = true;
    defaults.email = email;
  };
  networking.firewall.allowedTCPPorts = [80 443];
  services.nginx = {
    enable = true;
    recommendedProxySettings = true;
    recommendedTlsSettings = true;
    virtualHosts."${domain}" = {
      enableACME = true;
      forceSSL = true;
      root = "/srv/hello/";
    };
  };
}