What's New

🚀 Go Plugin Support

• New Go plugin ecosystem: Added go_modules/ directory structure for Go-based plugins
• Echo plugin in Go: Implemented plugin-echo-go as a reference Go plugin
• WIT bindings: Go-specific WIT interface definitions go_modules/wit generated from existing crates/pluginlab/wit/ definitions
  • TinyGo wasip2 requirement: The wasip2 target of TinyGo assumes that the component is targeting wasi:cli/command@0.2.0 world
  • Automatic import injection: scripts/prepare-wit-files.sh automatically uncomments and includes the required wasi:cli/imports@0.2.0 world imports that TinyGo needs for WASI compatibility
  • Seamless integration: This allows Go plugins to work with the existing REPL host without manual WIT modifications

🛠️ Toolchain Integration

• TinyGo compiler: Integrated TinyGo v0.39.0 for Go to WebAssembly compilation
• wkg tool: WebAssembly package manager that bundles multiple WIT interface files into a single repl:api.wasm package for Go plugin consumption
• Go 1.25+ support: Set up Go toolchain with modern version requirements
• Build integration: Integrated into existing justfile build system with dedicated Go plugin commands
• Official tooling: Based on Bytecode Alliance's Go Component Model tooling

🔧 CI/CD Enhancements

• Go toolchain setup: Added Go 1.25, TinyGo compiler, and wkg tool installation to CI workflows
• Unified implementation: Same Go toolchain setup applied to both Rust and web host CI pipelines

📚 Documentation & Testing

• README enhancements: Added Go language section with setup instructions and plugin examples
• Toolchain docs: Comprehensive Go tooling setup guide
• Testing coverage: Added E2E tests for Go plugins with CI validation of all toolchain components (rust and web hosts)

Dependencies

• New: TinyGo v0.39.0+
• New: Go 1.25+
• New: wkg (WebAssembly package manager)
• Existing: wasm-tools, cargo-component (unchanged)