anchor.diff:      sed -i Makefile.{in,am} \
         -i configure{,.ac} \
         -i prepare_sources.sh.in \
  -      -e 's/26104-b00/26104-e00/g'
  +      -e 's/26104-b00/${amrnb_3gpp_version}/g'
  +  '' + /* Patch no longer necessary */ ''
  +    grep -q 'amrnb-intsizes.patch' prepare_sources.sh.in
  +    sed -i prepare_sources.sh.in \
  +      -e '/amrnb-intsizes.patch/d'
     '';
   
     configureFlags = [
  
positive.code:   name = "amrnb-11.0.0.0";
  
    # http://www.3gpp.org/DynaReport/26104.htm
    # NOTE: When updating amrnb-3gpp, update every instance of 26104-e00 to the
    #       updated file name.
    amrnb_3gpp = fetchurl {
      # Rel-14
      url = "http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-e00.zip";
      multihash = "QmaQRi5VKMGgRTgxhjARAbNB5aTgKCLpskfCvg3QwEoGH9";
      sha256 = "5d0c70576cea76bf200c6412306a6152758391b1aa40e7e14271169bbafa9125";
    };
  
    src = fetchurl {
  
negative.code:   ];
  
    preConfigure = ''
      cp -v "$amrnb_3gpp" '${amrnb_3gpp_version}.zip'
    '';
  
    meta = with lib; {
  