anchor.diff:        platforms = [ "x86_64-linux" "i686-linux" ];
       };
     }
  -
  
positive.code:       if stdenv.hostPlatform.system == "x86_64-linux" then
          fetchurl {
            url = "https://download.nomachine.com/download/${versionMajor}/Linux/nomachine_${version}_${versionBuild_x86_64}_x86_64.tar.gz";
            sha256 = "1qir9ii0h5ali87mjzjl72dm1ky626d7y59jfpglakqxzqhjamdz";
          }
        else if stdenv.hostPlatform.system == "i686-linux" then
          fetchurl {
            url = "https://download.nomachine.com/download/${versionMajor}/Linux/nomachine_${version}_${versionBuild_i686}_i686.tar.gz";
            sha256 = "1gxiysc09k3jz1pkkyfqgw2fygcnmrnskk6b9vn4fjnvsab4py60";
          }
        else
          throw "NoMachine client is not supported on ${stdenv.hostPlatform.system}";
  
negative.code: { lib, stdenv, file, fetchurl, makeWrapper,
    autoPatchelfHook, jsoncpp, libpulseaudio }:
  let
    versionMajor = "7.6";
    versionMinor = "2";
    versionBuild_x86_64 = "4";
    versionBuild_i686 = "1";
  in
    stdenv.mkDerivation rec {
  