anchor.diff:          virtualHosts.test = {
             domain = "example.com";
             enabled = true;
  +        };
  +        muc = [
  +          {
  +            domain = "conference.example.com";
  +          }
  +        ];
  +        uploadHttp = {
  +          domain = "uploads.example.com";
           };
         };
       };
  
positive.code:       environment.systemPackages = [
          (pkgs.callPackage ./xmpp-sendmessage.nix { connectTo = nodes.server.config.networking.primaryIPAddress; })
        ];
      };
      server = { config, pkgs, ... }: {
        nixpkgs.overlays = [
  
negative.code:       ];
        networking.extraHosts = ''
          ${config.networking.primaryIPAddress} example.com
          ${config.networking.primaryIPAddress} conference.example.com
          ${config.networking.primaryIPAddress} uploads.example.com
        '';
        networking.firewall.enable = false;
        services.prosody = {
  