{ ... }:
{
  services.nginx.virtualHosts."paperless.grzb.de" = {
    listen = [{ 
      addr = "0.0.0.0";
      port = 80;
    }];
    locations."^~ /.well-known/acme-challenge/" = {
      proxyPass = "http://paperless.wg.grzb.de:80";
    };
  };
}