Well, I think you are wrong, and that would actually be the real way forward: an assembly written kernel using a worldwide standard ISA, aka RISC-V.
Of course, it would have not to abuse any preprocessor, because moving the issue which is the complexity of the compiler dependency to a preprocessor complexity dependency would nullify everything.
Doing that in rust, is just doing the mistake of linux all over again, actually even worse, since rust syntax is much more complex than C with gcc extensions.
