Alice editor extensions

Rust adapters for VS Code, VSCodium and Zed. Requires Alice 0.11.1+ on PATH. Install Alice from alice-lang.org; the same installation contains the language server (alice lsp --stdio).

• Completion for Alice, .NET and restored NuGet/C# references; automatic imports.
• Diagnostics, hover/XML documentation, definitions, symbols, signature help and formatting.
• NuGet ID/version completion and project-file assistance in alice.toml and .alproj.
• Highlighting, snippets and Alice file icons.

VS Code / VSCodium

Install the VSIX matching your OS and architecture from this repository's releases:

code --install-extension alice-language-0.11.1-linux-x64.vsix
# VSCodium uses the same package:
codium --install-extension alice-language-0.11.1-linux-x64.vsix

Set alice.path to an absolute executable path if Alice is not found automatically (PATH, then ALICE_HOME/bin or ~/.alice/bin). Restart the editor after installing Alice. The extension validates the version without blocking the editor and runs one CLI language server. No .NET extension, Visual Studio or separate C# language server is required.

Commands: Alice: Restart Language Server, Show Language Server Output, Run Current File, Build Project, Restore Dependencies, Run Tests, Open REPL.

Settings: alice.debounceMs (180), alice.deepChecks (true), alice.nugetCompletion (true). Disabling NuGet completion makes editing offline. NuGet requests happen only when you request completion in a dependency entry; there is no automatic restore, build or software download. Run Restore Dependencies after editing dependencies to refresh API metadata. Build C# path dependencies to update their exported APIs; the server reloads changed metadata without locking DLLs. Place their XML docs beside the DLL for hover help.

Untrusted/virtual workspaces do not launch the CLI. Project commands use process arguments, without interpolating filenames into shell commands.

Zed

Use zed: install dev extension and select zed/. Zed builds the Rust/WASI extension and downloads the pinned grammars. For a custom Alice installation:

{
  "lsp": {
    "alice": {
      "binary": { "path": "/absolute/path/to/alice" },
      "initialization_options": {
        "debounceMs": 180,
        "deepChecks": true,
        "nugetCompletion": true
      }
    }
  }
}

The optional Alice icon theme adds Alice file icons. Highlighting uses the pinned Ruby tree-sitter grammar plus Alice-specific queries; typed Alice constructs may produce tree-sitter recovery nodes, while diagnostics and completion use the actual Alice compiler. Dedicated Alice Manifest and Alice Project grammars provide TOML/XML assistance for alice.toml and .alproj without requiring other extensions.

Build and verify

cargo test -p alice-editor-core
cargo clippy --workspace -- -D warnings
cd vscode
npm ci
npm run build:native
npm test
npm run package -- --target linux-x64
cd ..
rustup target add wasm32-wasip2
cargo build -p alice-zed --release --target wasm32-wasip2

Build the native addon on each matching host; package targets are linux-x64, linux-arm64, darwin-x64, darwin-arm64, win32-x64 and win32-arm64. CI creates the platform VSIX files and a Zed source/WASM archive. Publishing to the VS Marketplace, Open VSX or Zed's registry uses the same artifacts but requires registry credentials and registry submission; building a VSIX does not publish it.

core/ contains the shared Rust launch/version contract. native/ exposes it via napi-rs; vscode/extension.js only adapts the native command to the editor's LSP client. zed/ uses Zed's Rust extension API. Compiler/runtime remain C# in the main repository.

API references: Zed language extensions, napi-rs, LSP.