This is a demo of a cross-platform app with shared core logic using Rust and Iroh and shared UI using Compose Multiplatform. The UI and Rust logic communicate using UniFFI, with bindings for Kotlin Multiplatform handled by Gobley.

Android and desktop work, I haven't tested with iOS yet.

I've been using Android Studio for building the Android app, and IDEA for building the desktop app. You will also need a Rust toolchain with additional targets installled for the targets you're building for (the Android and iOS targets). Gradle/Gobley are currently configured to only build desktop for the host target.

NixOS: I'm letting Android Studio/IDEA manage the JDK and Android SDK. The flake in nix/ installs a Rust toolchain since I don't have one installed globally. I launch android-studio . or idea-community . inside the repository root so that cargo is in the path. I also had to disable some tasks from Gobley which call rustup to install required targets, but my install doesn't use rustup.

There is also a Cargo example (cargo run --example headless) that starts a node running the same echo protocol as the app for testing.