anchor.diff:      cat > $out/bin/steam << EOF
       #!${stdenv.shell}
   
  -    export PATH=${xz}/bin:\$PATH
       export LD_LIBRARY_PATH=\$LD_LIBRARY_PATH:${libX11}/lib:${gcc.gcc}/lib:${glibc215}/lib:${libselinux}/lib:${libXrandr}/lib:${pango}/lib:${freetype}/lib:${fontconfig}/lib:${glib}/lib:${gtk}/lib:${gdk_pixbuf}/lib:${cairo}/lib:${libXi}/lib:${alsaLib}/lib:${libXrender}/lib:${nss}/lib:${nspr}/lib:${zlib}/lib:${dbus}/lib:${libpng12}/lib:${libXfixes}/lib:${cups}/lib:${libgcrypt}/lib:${openal}/lib:${pulseaudio}/lib:${SDL}/lib:${libvorbis}/lib:${curl}/lib
       STEAMBOOTSTRAP=\$HOME/.steam/steam/steam.sh
       if [ -f \$STEAMBOOTSTRAP ]; then
  
positive.code: 
  assert stdenv.system == "i686-linux";
  
  let version = "1.0.0.16"; in
  
  stdenv.mkDerivation rec {
    name = "steam-${version}";
  
negative.code:       echo \$\$ > "\$PIDFILE" # pid of the shell will become pid of steam
        exec "\$STEAMBINDIR/ld-linux.so.2" "\$STEAMBINDIR/steam"
      else
        export PATH=${xz}/bin:\$PATH
        exec $out/bin/.steam-wrapped
      fi
      EOF
  