anchor.diff:  { lib, stdenv, file, fetchurl, makeWrapper,
     autoPatchelfHook, jsoncpp, libpulseaudio }:
   let
  -  versionMajor = "7.4";
  -  versionMinor = "1";
  -  versionBuild_x86_64 = "1";
  +  versionMajor = "7.6";
  +  versionMinor = "2";
  +  versionBuild_x86_64 = "4";
     versionBuild_i686 = "1";
   in
     stdenv.mkDerivation rec {
  
positive.code:       platforms = [ "x86_64-linux" "i686-linux" ];
      };
    }
  
  
negative.code:       if stdenv.hostPlatform.system == "x86_64-linux" then
          fetchurl {
            url = "https://download.nomachine.com/download/${versionMajor}/Linux/nomachine_${version}_${versionBuild_x86_64}_x86_64.tar.gz";
            sha256 = "1kkdf9dlp4j453blnwp1sds4r3h3fy863pvhdh466mrq3f10qca8";
          }
        else if stdenv.hostPlatform.system == "i686-linux" then
          fetchurl {
            url = "https://download.nomachine.com/download/${versionMajor}/Linux/nomachine_${version}_${versionBuild_i686}_i686.tar.gz";
            sha256 = "0h4c90hzhbg0qdb585bc9gry9cf9hd8r53m2jha4fdqhzd95ydln";
          }
        else
          throw "NoMachine client is not supported on ${stdenv.hostPlatform.system}";
  