anchor.diff:      ${utillinux}/bin/hexdump -ve '1/1 "%.2X"' $out/usr/bin/brprintconf_mfcj6510dw | \
       sed 's.2F6F70742F62726F746865722F5072696E746572732F25732F696E662F6272257366756E63.62726d66636a36353130647766756e63000000000000000000000000000000000000000000.' | \
       sed 's.2F6F70742F62726F746865722F5072696E746572732F25732F696E662F627225737263.62726D66636A3635313064777263000000000000000000000000000000000000000000.' | \
  -    ${vimNox}/bin/xxd -r -p > $out/usr/bin/brprintconf_mfcj6510dw_patched
  +    ${xxd}/bin/xxd -r -p > $out/usr/bin/brprintconf_mfcj6510dw_patched
       chmod +x $out/usr/bin/brprintconf_mfcj6510dw_patched
       #executing from current dir. segfaults if it's not r\w.
       mkdir -p $out/bin
  
positive.code:     '';
  
    meta = with stdenv.lib; {
      homepage = http://www.brother.com/;
      description = "Brother MFC-J6510DW LPR driver";
      license = with licenses; unfree;
      platforms = with platforms; linux;
      downloadPage = http://support.brother.com/g/b/downloadlist.aspx?c=us&lang=en&prod=mfcj6510dw_all&os=128;
      maintainers = with maintainers; [ ramkromberg ];
    };
  }
  
negative.code: { stdenv, fetchurl, pkgsi686Linux, dpkg, makeWrapper, coreutils, gnused, gawk, file, cups, patchelf, utillinux, xxd
  , ghostscript, a2ps }:
  
  # Why:
  