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Cargo Workspaces

You can add flutter_rust_bridge to an existing Cargo Workspace by using the --rust-crate-dir option.

To create a new Flutter project inside the workspace, run:

flutter_rust_bridge_codegen create my_flutter_project --rust-crate-dir ../my_flutter_bridge

Where:

  • my_flutter_project is the name of the Flutter project
  • my_flutter_bridge is the name of the Rust project

You can also apply the codegen to an existing Flutter project inside the workspace:

cd my_flutter_project
flutter_rust_bridge_codegen integrate --rust-crate-dir ../my_flutter_bridge
cd ..

The generated my_flutter_bridge project will also contain a Cargo.lock file. You'll need to remove this file before adding it to the workspace:

rm my_flutter_bridge/Cargo.lock

You then need to add the generated Rust project to your Cargo Workspace. Edit the Cargo.toml file at the root of your workspace:

-members = ["workspace_member_1", "workspace_member_2"]
+members = ["workspace_member_1", "workspace_member_2", "my_flutter_bridge"]

Finally, run the project:

cd my_flutter_project/
flutter run

If flutter_rust_bridge does not find the directory of compiled outputs, you can customize the library loading logic to explicitly specify the directory. Please refer to #2460 for an example.