anchor.diff:    # no adhoc user managment
     users.mutableUsers = false;
   
  -
     system.stateVersion = "19.09"; # Did you read the comment?
   
   }
  
positive.code:     preLVM = true;
    }];
  
    networking= {
      hostName = "alpha";
      #
      # The global useDHCP flag is deprecated, therefore explicitly set to false here.
  
negative.code:     useDHCP = false;
      interfaces.enp0s31f6.useDHCP = true;
      interfaces.wlp4s0.useDHCP = true;
      firewall = { allowedTCPPorts = [ 80 443 ]; };
    };
  
    hardware = { cpu.intel.updateMicrocode = true; };
  