You might also be interested in https://github.com/daniel-thompson/wasp-os which...

		minhmeoke on Feb 3, 2022 \| parent \| context \| favorite \| on: Ask HN: Who wants to collaborate? You might also be interested in https://github.com/daniel-thompson/wasp-os which runs on nRF52-based hardware (there may be eInk-based variants as well)