anchor.diff:  , cairo, dbus, expat, zlib, libpng12, nodejs, gnutar, gcc, gcc_32bit
   , libX11, libXcursor, libXdamage, libXfixes, libXrender, libXi
   , libXcomposite, libXext, libXrandr, libXtst, libSM, libICE, libxcb, chromium
  -, libpqxx
  +, libpqxx, libselinux, pciutils, libpulseaudio
   }:
   
   let
  
positive.code:     libX11 libXcursor libXdamage libXfixes libXrender libXi
      libXcomposite libXext libXrandr libXtst libSM libICE libxcb
      libpqxx gtk3
    ];
    libPath32 = lib.makeLibraryPath [ gcc_32bit.cc ];
    binPath = lib.makeBinPath [ nodejs gnutar ];
  
negative.code: 
      mkdir -p $out/bin
      makeWrapper $unitydir/Unity $out/bin/unity-editor \
        --prefix LD_LIBRARY_PATH : "${libPath64}" \
        --prefix LD_PRELOAD : "$unitydir/libunity-nosuid.so" \
        --prefix PATH : "${binPath}"
    '';
  