Last I messed with it, it wasn't "self hosting" enough to run cargo + rustc, so all of the extra little utilities had to be built in when building the OS. This made it kind of annoying to hack on the userland.

That's seems to still be the case, but I admit I don't know too much about bootstrapping an OS like this. Is cargo still a ways out from being able to run within Redox? Is it a priority at all? I'd love to have a simple editor with a compiler running in a VM.