liblouis: mark as broken

pkgs/applications/misc/orca/default.nix

···
   ];
 
   propagatedBuildInputs = [
-    pygobject3 pyatspi dbus-python pyxdg brltty liblouis speechd gst-python setproctitle
+    # TODO: re-add liblouis when it is fixed
+    pygobject3 pyatspi dbus-python pyxdg brltty speechd gst-python setproctitle
   ];
 
   buildInputs = [

pkgs/development/libraries/liblouis/default.nix

···
   meta = with stdenv.lib; {
     description = "Open-source braille translator and back-translator";
     homepage = http://liblouis.org/;
+    broken = true;
     license = licenses.lgpl21;
     maintainers = with maintainers; [ jtojnar ];
     platforms = platforms.unix;