anchor.diff:    };
   
     nodes = {
  +    # Testing the Byzantine Fault Tolerant protocol
       bft = { ... }: {
         environment.systemPackages = [ pkgs.jormungandr ];
  +      services.jormungandr.enable = true;
  +      services.jormungandr.genesisBlockFile = "/var/lib/jormungandr/block-0.bin";
  +      services.jormungandr.secretFile = "/etc/secrets/jormungandr.yaml";
  +    };
   
  +    # Testing the Ouroboros Genesis Praos protocol
  +    genesis = { ... }: {
  +      environment.systemPackages = [ pkgs.jormungandr ];
         services.jormungandr.enable = true;
         services.jormungandr.genesisBlockFile = "/var/lib/jormungandr/block-0.bin";
         services.jormungandr.secretFile = "/etc/secrets/jormungandr.yaml";
  
positive.code: 
      # Now we can test if we are able to reach the REST API
      $bft->waitUntilSucceeds("curl -L http://localhost:8607/api/v0/node/stats | grep uptime");
    '';
  })
  
negative.code:   testScript = ''
      startAll;
  
      ## Testing BFT
      # Let's wait for the StateDirectory
      $bft->waitForFile("/var/lib/jormungandr/");
  
  