Rust in Emacs (was: Re: A new collaborative editing package (maybe tangent))

[Pedro Andres Aranda Gutierrez]

rms writes:

>>And which methods are already well-supported in Rust?
>
>Please do not assume we will or should use Rust.
>The trademark license of Rust raises a complex issue of its own.

Which makes me wonder what the situation is with libraries used by Emacs
which are written in Rust. 

One would be rsvg-2, which is difficult to compile from source in some systems…
would there be any pure-C alternative?

Thanks for any info,
/PA