uniffi-rs VS diplomat

On my youtube series "Growing up Rust", I'm building a personal CRM in Rust with a Swift frontend. I'm using CQRS and an event-driven architecture with the least amount of swift as possible. I'm using UniFFI to generate the bindings for swift (and in this example python)

Not officially. We currently have bindings for rust, python, golang and swift.

These were the most asked for bindings (python for ml, golang for networking and swift for ios apps).

We are using uniffi https://mozilla.github.io/uniffi-rs/

Would you need C or C++ bindings?

An alternative is metacall. The example in the readme is about calling Python from Javascript, but it also works with other languages, like Ruby, C#, Java, and other languages

https://github.com/metacall/core

List of supported languages here https://github.com/metacall/core/blob/develop/docs/README.md...

In the future, maybe webidl (or extensions of it) will bring interoperability between languages too. At the moment there is https://mozilla.github.io/uniffi-rs/ for interoperability between Rust and a number of languages (basically the ones mozilla needs: Swift, Kotlin, Javascript)

The tooling for the first kind -- calling Rust from another language -- is a bit less developed, and tends to rely on code generation that doesn't necessarily produce a natural C API. cbindgen, uniffi, cxx, and Diplomat all take this course.

Mozilla's uniffi-rs is really good. You write a common IDL and the bindings are generated automatically.

https://github.com/mozilla/uniffi-rs

At Mozilla we built a multi-language bindings generator: https://github.com/mozilla/uniffi-rs/

Is there a connection with Mozilla UniFFI ?

Rust <> Swift/ Kotlin works very well with uniffi-rs by Mozilla: https://github.com/mozilla/uniffi-rs

The tooling for the first kind -- calling Rust from another language -- is a bit less developed, and tends to rely on code generation that doesn't necessarily produce a natural C API. cbindgen, uniffi, cxx, and Diplomat all take this course.

I don't think that accurately describes what ICU4X does. It generates code directly in the language needed using Diplomat. Which currently supports JS/TS/Wasm, C, C++, and .NET, but we plan to support more (Dart is actively being worked on, there is a lot of interest in Java). Diplomat is designed to be relatively easy to write backends for: you have to write code that converts its internal IR to bindings code, so you mostly need to understand that internal IR and figure out how to idiomatically map it to other languages.

The ICU4X team is developing diplomat - https://github.com/rust-diplomat/diplomat/

I'm not that interested in a separate tool for this but it would be really cool to have a dart plugin as a part of Diplomat. Diplomat's not fully polished yet but it's totally okay to add new language backends to it. (Eventually I plan to restructure it so that it has a cleaner plugin interface, but for now "checked into tree" is fine for backends)