So, rustup should ask before modifying ~/.profile, this is what opam does. Also, it'd be great to have a directory listing for the rustup-setup executables, bec

So, rustup should ask before modifying ~/.profile, this is what opam does. Also, it'd be great to have a directory listing for the rustup-setup executables, because I don't run random shell scripts piped from curl, so I had to reconstruct the URL for what the shell script would have downloaded. Anyway, I'm glad multirust functionality is getting mainlined, because it's a PITA to build many things, like for example rustup.rs, which require nightly rust features.