You mention React and Elm, which - as I said previously - both rely on other people's actual GUI work (the various browsers' rendering engines + DOM, the variou

You mention React and Elm, which - as I said previously - both rely on other people's actual GUI work (the various browsers' rendering engines + DOM, the various platform-specific UI SDKs, etc) to actually put anything on the screen. I can't speak to ReasonML, as I have not used it, but my impression also is that it takes advantage of other people's GUI libraries considering that I've heard Revery compared to Flutter (and Flutter outsources its rendering to Skia as well as relies on rather imperative RenderObjects beneath the functional reactive layers). Please correct me if I'm wrong. I would be very interested indeed to see a GUI framework built from the actual ground level up in an entirely functional reactive manner. Do you know of any?