I've done that once but since building rustc requires a specific nightly I'd need a glibc environment each time I want to build rustc. Replacing the glibc build

I've done that once but since building rustc requires a specific nightly I'd need a glibc environment each time I want to build rustc. Replacing the glibc builds with a musl static build (not targeting but built with musl statically and no glibc requirement) would give us a single binary that works on Alpine and Ubuntu. If that's not an option I'd welcome a musl variant that's automatically installed by rustup when on Alpine or VoidLinux musl edition or any other musl linux environment.