anchor.diff:  { stdenv, fetchurl, lib, iasl, dev86, pam, libxslt, libxml2, libX11, xproto, libXext
  -, libXcursor, libXmu, qt4, libIDL, SDL, hal, libcap, zlib, libpng, glib, kernel
  +, libXcursor, libXmu, qt4, libIDL, SDL, libcap, zlib, libpng, glib, kernel
   , python, which, alsaLib, curl, gawk
   , xorriso, makeself, perl, jdk, pkgconfig
   }:
  
positive.code: 
    buildInputs =
      [ iasl dev86 libxslt libxml2 xproto libX11 libXext libXcursor qt4 libIDL SDL
        hal libcap glib kernel python alsaLib curl pam xorriso makeself perl jdk
        pkgconfig which libXmu
      ];
  
  
negative.code:     make install
      
      # Create wrapper script
      mkdir -p $out/bin
      cp -v ${./VBox.sh} $out/bin/VBox.sh
      sed -i -e "s|@INSTALL_PATH@|$out/virtualbox|" \
             -e "s|@QT4_PATH@|${qt4}/lib|" \
  