anchor.diff:  , autoreconfHook
   , fetchFromGitHub
   , fetchTritonPatch
  +, lib
   
   , fftw_single
   }:
  
positive.code:     "--with-fft=gpl-fftw3"
    ];
  
    meta = with stdenv.lib; {
      description = "An audio compression format designed for speech";
      hompage = http://www.speex.org/;
      license = licenses.bsd3;
  
negative.code:     platforms;
  in
  stdenv.mkDerivation rec {
    name = "speexdsp-2017-08-08";
  
    src = fetchFromGitHub {
      version = 4;
      owner = "xiph";
      repo = "speexdsp";
      # Upstream has not tagged a release since 2014
      rev = "85e8ad5432eb9333f727e7b18c97995317eabf02";
      sha256 = "5bfd04cffc5c855abebb042e5882bda8cf9b38cf90eb580328c34c7e1ea4052c";
    };
  
    nativeBuildInputs = [
  