How to run example? Rust compilation errors.

[n8henrie]

I know a little rust but am brand new to Flutter.

I wanted to try to run the examples but not sure where to start. Running on an aarch64-darwin system.

$ git clone https://github.com/cunarist/rust-in-flutter.git
$ cd rust-in-flutter/example
$ cargo build
error[E0277]: the trait bound `api::RustSignal: IntoIntoDart<_>` is not satisfied
... many other errors
$ rustc --version
rustc 1.71.0 (8ede3aae2 2023-07-12)
$ flutter --version
Flutter 3.10.2 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 9cd3d0d9ff (9 weeks ago) • 2023-05-23 20:57:28 -0700
Engine • revision 90fa3ae28f
Tools • Dart 3.0.2 • DevTools 2.23.1

• Is the example supposed to be relatively ready to build?
• Did I miss a flutter step?
• Do I need to be on nightly or something?
• I don't see any tags so I presume I should be trying to build from main?

Thanks for any help!

[temeddix]

Hi @n8henrie , I took some time to investigate this problem.

It turned out to be a bug with version 1.4.1. Version 1.5.0 released just now will eliminate those errors. Thank you for your discussion, and please feel free to come back if you face any other issues :)

[n8henrie]

Yes, this fixed the issue for me.

I found the lack of git tags (to mark releases such as 1.5.0) a little confusing, but I was able to build the examples on master by:

For any others looking to run the example:

1. I had to edit the SDK version back to 3.0.2 in both of the pubspec.yaml files, since that's the most recent avail in nixpkgs, but users with a current release (perhaps from homebrew) won't have to worry about that.
2. cd example/macos
3. flutter run --release

Thank you!