anchor.diff:    };
   
     outputs = [ "out" "dev" "devdoc" "info" ];
  -  buildInputs = [ libgcrypt curl gnutls pkgconfig ];
  +  buildInputs = [ libgcrypt curl gnutls pkgconfig ]
  +    ++ stdenv.lib.optionals stdenv.isDarwin [ libiconv libintlOrEmpty ];
   
     preCheck = ''
       # Since `localhost' can't be resolved in a chroot, work around it.
  
positive.code:     homepage = http://www.gnu.org/software/libmicrohttpd/;
  
      maintainers = with maintainers; [ eelco vrthra fpletz ];
      platforms = platforms.linux;
    };
  }
  
negative.code: { stdenv, fetchurl, libgcrypt, curl, gnutls, pkgconfig, libiconv, libintlOrEmpty }:
  
  stdenv.mkDerivation rec {
    name = "libmicrohttpd-0.9.55";
  