It's a planned feature but isn't a high priority. It's hard for us to get to it with all the other things we want to implement. We'll add it one day. We need to keep hiring more developers and expanding to do more.
I have a question you may be able to answer. Are contributions to GrapheneOS in general welcome? If yes, where would one start, is there a page about setting up a development environment or outlining a list of features/areas that could need work/help? I have quite a few spare Pixel phones that are currently just idling but I'd love to try building and installing GOS myself to start out.
