[whyarewheher]

Why not do it? There are lots of reasons to have multiple implementations of a language, one of them being gcc is much easier to bootstrap than rustc

[skitter]

rustc got bootstrapped already, so download it. If you want to run the compiler itself on a new architecture, cross-compile. If you still decide to bootstrap it again, that's something that will only need to be done once. And even in that case, you can use the second implementation that already exists, mrustc.