anchor.diff:      else if stdenv.hostPlatform.system == "i686-linux" then "${stdenv.cc}/nix-support/dynamic-linker"
       else throw "Unsupported platform for PlayOnLinux: ${stdenv.hostPlatform.system}";
     ld64 = "${stdenv.cc}/nix-support/dynamic-linker";
  -  libs = pkgs: stdenv.lib.makeLibraryPath [ pkgs.xorg.libX11 ];
  +  libs = pkgs: stdenv.lib.makeLibraryPath [ xorg.libX11 xorg.libX11.dev libGL ];
   
   in stdenv.mkDerivation {
     name = "playonlinux-${version}";
  
positive.code:     [ python2Packages.python
        python2Packages.wxPython
        python2Packages.setuptools
      ];
  
    patchPhase = ''
  
negative.code: , which
  , curl
  , jq
  , xorg
  , libGL
  }:
  
  let
  