Relevant to this discussion - my project Glicol (https://glicol.org) addresses this space. Currently working on a no_std rewrite, demo coming next year :)
Or maybe it is already possible, to be fair I haven't looked closely.
https://daisy.audio/hardware/, https://github.com/electro-smith/libDaisy
https://github.com/chaosprint/daisy-rust-playground
but for now my main mcu is rp2350