anchor.diff:  
     installTargets = [ "install_client" "install_man" ];
   
  -  qtWrapperArgs = [ "--suffix PATH : ${nx-libs}/bin:${openssh}/libexec" ];
  +  qtWrapperArgs = [ "--suffix PATH : ${nx-libs}/bin:${openssh}/libexec" "--set QT_QPA_PLATFORM xcb" ];
   
     meta = with lib; {
       description = "Graphical NoMachine NX3 remote desktop client";
  
positive.code: { lib, fetchurl, cups, libssh, libXpm, nx-libs, openldap, openssh
  , mkDerivation, qtbase, qtsvg, qtx11extras, qttools, phonon, pkg-config }:
  
  mkDerivation rec {
    pname = "x2goclient";
    version = "4.1.2.2";
  
  
negative.code:     sha256 = "yZUyZ8QPpnEZrZanO6yx8mYZbaIFnwzc0bjVGZQh0So=";
    };
  
    buildInputs = [
      cups
      libssh
      libXpm
      nx-libs
      openldap
      openssh
      qtbase
      qtsvg
      qtx11extras
      qttools
      phonon
    ];
  
    nativeBuildInputs = [
      pkg-config
      qt5.wrapQtAppsHook
    ];
  
    postPatch = ''
       substituteInPlace src/onmainwindow.cpp --replace "/usr/sbin/sshd" "${openssh}/bin/sshd"
  