At the moment even building the native rust compiler is a PITA on anything but x86_64/arm64 if it's anything but a glibc based system. Tried that on Gentoo musl/ppc and musl/ppc64 but so far it didn#t work out.

Things may change when there is halfway decent rust support in gcc "gccrs" and you can use this or at least use gccrs to bootstrape native rustc more easily. But currently it looks like this won't happen soon enough to be in GCC 14.