anchor.diff:      libsecret
       libtasn1
       libwebp
  +    libwpe
  +    libwpe-fdo
       libxkbcommon
       libxml2
       libxslt
  
positive.code:     "-DENABLE_INTROSPECTION=ON"
      "-DPORT=GTK"
      "-DUSE_LIBHYPHEN=OFF"
      "-DUSE_WPE_RENDERER=OFF"
    ] ++ optionals stdenv.isDarwin [
      "-DENABLE_GRAPHICS_CONTEXT_3D=OFF"
      "-DENABLE_GTKDOC=OFF"
  
negative.code: , xdg-dbus-proxy
  , substituteAll
  , glib
  , libwpe
  , libwpe-fdo
  }:
  
  assert enableGeoLocation -> geoclue2 != null;
  