anchor.diff: -{ stdenv, fetchurl, perl, zlib, bzip2 }:
  +{ stdenv, fetchurl, fetchpatch, perl, zlib, bzip2 }:
   
   stdenv.mkDerivation rec {
     pname = "routino";
  
positive.code:     sha256 = "1ccx3s99j8syxc1gqkzsaqkmyf44l7h3adildnc5iq2md7bp8wab";
    };
  
    nativeBuildInputs = [ perl ];
  
    buildInputs = [ zlib bzip2 ];
  
    outputs = [ "out" "doc" ];
  
    makeFlags = [ "prefix=$(out)" ];
  
  
negative.code:     description = "OpenStreetMap Routing Software";
      license = licenses.agpl3;
      maintainers = with maintainers; [ dotlambda ];
      platforms = with platforms; linux ++ darwin;
    };
  }
  