anchor.diff:      libsoup gtk3
     ];
   
  -  enableParallelBuilding = true;
  -
     outputs = [ "out" "dev" ];
   }
  
positive.code:   NIX_CFLAGS_COMPILE = optionalString stdenv.isDarwin " -lintl";
  
    nativeBuildInputs = [
      cmake perl python2 ruby bison gperf
      pkgconfig gettext gobjectIntrospection
    ];
  
    buildInputs = libintlOrEmpty ++ [
      libwebp enchant libnotify gnutls pcre nettle libidn libgcrypt woff2
      libxml2 libsecret libxslt harfbuzz libpthreadstubs libtasn1 p11-kit
      sqlite gst-plugins-base gst-plugins-bad libxkbcommon epoxy at-spi2-core
    ] ++ optional enableGeoLocation geoclue2
  
negative.code: { stdenv, fetchurl, perl, python2, ruby, bison, gperf, cmake, ninja
  , pkgconfig, gettext, gobjectIntrospection, libnotify, gnutls, libgcrypt
  , gtk3, wayland, libwebp, enchant2, xorg, libxkbcommon, epoxy, at-spi2-core
  , libxml2, libsoup, libsecret, libxslt, harfbuzz, libpthreadstubs, pcre, nettle, libtasn1, p11-kit
  , libidn, libedit, readline, libGLU_combined, libintlOrEmpty
  , enableGeoLocation ? true, geoclue2, sqlite
  