anchor.diff:      sha256 = "1ccx3s99j8syxc1gqkzsaqkmyf44l7h3adildnc5iq2md7bp8wab";
     };
   
  +  patchFlags = [ "-p0" ];
  +  patches = stdenv.lib.optionals stdenv.isDarwin [
  +    (fetchpatch {
  +      url = "https://raw.githubusercontent.com/macports/macports-ports/18fd229516a46e7272003acbe555735b2a902db7/gis/routino/files/patch-Makefile_conf.diff";
  +      sha256 = "1b7hpa4sizansnwwxq1c031nxwdwh71pg08jl9z9apiab8pjsn53";
  +    })
  +    (fetchpatch {
  +      url = "https://raw.githubusercontent.com/macports/macports-ports/18fd229516a46e7272003acbe555735b2a902db7/gis/routino/files/patch-src_Makefile_dylib_extension.diff";
  +      sha256 = "1kigxcfr7977baxdsfvrw6q453cpqlzqakhj7av2agxkcvwyilpv";
  +    })
  +  ];
  +
     nativeBuildInputs = [ perl ];
   
     buildInputs = [ zlib bzip2 ];
   
     outputs = [ "out" "doc" ];
  +
  +  CLANG = stdenv.lib.optionalString stdenv.cc.isClang "1";
   
     makeFlags = [ "prefix=$(out)" ];
   
  
positive.code: { stdenv, fetchurl, perl, zlib, bzip2 }:
  
  stdenv.mkDerivation rec {
    pname = "routino";
  
negative.code:     description = "OpenStreetMap Routing Software";
      license = licenses.agpl3;
      maintainers = with maintainers; [ dotlambda ];
      platforms = with platforms; linux ++ darwin;
    };
  }
  