switch (uname)
    case FreeBSD NetBSD DragonFly
        echo Hi Beastie!
    case Linux
        #echo Hi Tux!
        set -x RUSTUP_HOME '/usr/local/share/rustup'
    case Darwin
	    echo Hi Hexley!
        source "$HOME/.cargo/env.fish"
    case '*'
        echo Hi, stranger!
end