[dgares]

No, there's parts of Roc that are in Zig[1]. At a glance, it seems like they moved mostly-wholesale over to Zig at one point, then moved back while still keeping some parts.

[1]: https://www.roc-lang.org/faq.html#rust-and-zig

[hitekker]

You may have glanced too quickly. The article says:

> Roc's compiler has always been written in Rust. Roc's standard library was briefly written in Rust, but was soon rewritten in Zig.