How to write a native Mac OS X GUI with Rust?

Question

I'm going to write a software using Rust:

• core written in Rust
• native Mac OS GUI written in Rust (preferably) or other language

Which setup allows that? Is it possible at all?

P.S. I never programmed nor with Rust nor with Cocoa/etc before.

Answer 1

GUIs designed in Interface Builder work best if you use bindings, but bindings assume Objective-C. For this reason I'm writing GUI part in Objective-C and core part in Rust.

The two can communicate via an obj-c library (article about this), but the languages are quite different, so it's a bit awkward.

Rust can easily generate C-compatible static library which can be linked to an Objective-C program. You can even add Makefile target in Xcode to build the whole thing without leaving Xcode.