Ideally such a Rust kernel project would implement a drop-in-replacement for the Linux kernel, so that Linux distros could select between the original Linux ker

Ideally such a Rust kernel project would implement a drop-in-replacement for the Linux kernel, so that Linux distros could select between the original Linux kernel and the Rust 'imposter'. That way the users would already be there. It would just be a detail like GNOME vs KDE, X11 vs Wayland, or glibc vs MUSL.