anchor.diff:    name = "amrwb-11.0.0.0";
   
     # http://www.3gpp.org/DynaReport/26204.htm
  -  # NOTE: When updating amrwb-3gpp, update every instance of 26204-d10 to the
  +  # NOTE: When updating amrwb-3gpp, update every instance of 26204-e10 to the
     #       updated file name.
     amrwb_3gpp = fetchurl {
  -    # Rel-13.1
  -    url = http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-d10.zip;
  -    multihash = "Qmbce3E99N841HdBxXj8vnU92AxuPSTGY2vC2zqDmW4Ptz";
  -    sha256 = "c922636b1878e77d1d4a96bb9c4a014312edef280e1a6939d927acc1775c3452";
  +    # Rel-14.1
  +    url = http://www.3gpp.org/ftp/Specs/archive/26_series/26.204/26204-e10.zip;
  +    multihash = "QmeAnGzpXFmjkowDLJCMPfG6Tfa3yUw5QyyECamJEvKgV2";
  +    sha256 = "68cfe06d38eda2ab12a194175d62ef1cee9327a99e98b24dbad9e84545bd7f2b";
     };
   
     src = fetchurl {
  
positive.code:   ];
  
    postConfigure = ''
      cp -v $amrwb_3gpp 26204-d10.zip
    '';
  
    meta = with stdenv.lib; {
      description = "AMR Wide-Band Codec";
      homepage = http://www.penguin.cz/~utx/amr;
      # The wrapper code is free, but not the libraries from 3gpp.
  
negative.code:     sed -i Makefile.{in,am} \
        -i configure{,.ac} \
        -i prepare_sources.sh.in \
        -e 's/26204-b00/26204-e10/g'
    '';
  
    configureFlags = [
  