The general workflow with Rust is

    $ git clone <foo>
    $ cd <foo>
    $ cargo run

With something like this, you might want to also use https://github.com/passcod/cargo-watch , which, after installing it, changes that last line to

    $ cargo watch

and then it will recompile when you change a file, automatically.

I haven't been able to test that this project works exactly this way because it looks like they're on an older nightly than I have on my machine, but it looks like that's all you need.

I will be amazed if true! Last time I looked at the emscripten-Rust stack it was a tower of hacks and required a custom-hacked standard library. If that's all abstracted behind cargo build scripts that's awesome, but we're still a ways from having this be elegantly integrated into the Rust system.

It's going to improve rapidly though.

I think it's gotten better due to recent LLVM changes in emscripten, last I heard, but maybe maybe not. Can't wait until it's just trivial.

This uses a deeply hacked Rust stack. Take a look at this: https://github.com/tcr/rust-webplatform/blob/master/setup.sh It's also using a version of Rust that's pre-1.0.0.

Progress is being made on making this first class though: https://github.com/rust-lang/rfcs/issues/604