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The desktop companion crate was Linux-only. All platform-specific code lives in canvas.rs (WebKitGTK, cairo, unix sockets, SO_PEERCRED), so: move webkit2gtk/cairo-rs/libc under linux target dependencies, gate the canvas module, its protocol registration, invoke handler, and exit shutdown to Linux, add a USERPROFILE home fallback and an explicit no-op installer error for Windows, and add the multi-size icon.ico Windows resource. Linux behavior is unchanged; macOS/Windows builds are for testing (macOS cargo build+test green locally; Windows aarch64-msvc built and launched in a Windows 11 ARM VM).
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OpenClaw for Linux
The Linux companion is a Tauri v2 desktop shell for a local OpenClaw Gateway. It installs the CLI when needed, delegates Gateway service management to openclaw gateway, opens the Gateway-served Control UI with its resolved auth URL, and stays available in the system tray.
Linux prerequisites
Debian and Ubuntu development packages:
sudo apt update
sudo apt install libwebkit2gtk-4.1-dev build-essential curl wget file \
libxdo-dev libssl-dev libayatana-appindicator3-dev librsvg2-dev
Install a current stable Rust toolchain with rustup.
Develop and build
The frontend is static HTML, CSS, and JavaScript. It has no package install or build step.
cd apps/linux/src-tauri
cargo run
cargo build
The app uses OPENCLAW_DESKTOP_CLI when set. Otherwise it checks ~/.openclaw/bin/openclaw, then openclaw on PATH.
Canvas bridge
The running app gives the headless openclaw node run host a single Canvas WebView. The bundled linux-canvas plugin advertises canvas.* only while the app socket exists. The app listens at $XDG_RUNTIME_DIR/openclaw-canvas.sock (or /tmp/openclaw-canvas-$UID.sock) with mode 0600; a headless Linux node without the app does not advertise Canvas.
The plugin-generated A2UI renderer in extensions/canvas/src/host/a2ui/ remains the source of truth. The app embeds its committed, synced OpenClawKit mirror from apps/shared/OpenClawKit/Sources/OpenClawKit/Resources/CanvasA2UI/. Run node scripts/sync-native-a2ui.mjs --check from the repository root after changing those assets.
Installer resource
tauri.conf.json bundles the repository's canonical scripts/install-cli.sh directly as install-cli.sh. The app never keeps a forked copy. Stable, beta, and dev installs select latest, beta, and a managed Git main checkout respectively, always under ~/.openclaw.
Icons
The icon sources of truth live next to the PNGs: icons/icon.svg (transparent
claw mark, used by the tray) and icons/icon-tile.svg (claw mark on the dark
brand tile, used for the app and package icons). Regenerate the committed PNGs
with librsvg:
cd apps/linux/src-tauri/icons
rsvg-convert -w 32 --keep-aspect-ratio icon.svg -o 32x32.png
magick 32x32.png -background none -gravity center -extent 32x32 PNG32:32x32.png
rsvg-convert -w 128 -h 128 icon-tile.svg -o 128x128.png
rsvg-convert -w 256 -h 256 icon-tile.svg -o 128x128@2x.png
rsvg-convert -w 512 -h 512 icon-tile.svg -o icon.png
magick icon.png -define icon:auto-resize=256,128,64,48,32,16 icon.ico
Packaging
Build a .deb and AppImage locally (the same command CI runs):
cd apps/linux/src-tauri
pnpm dlx @tauri-apps/cli@2.11.4 build --bundles deb,appimage
Bundles land in target/release/bundle/{deb,appimage}/. The Linux App CI
workflow uploads them as the openclaw-linux-companion artifact on pull
requests touching apps/linux/** and on manual dispatch.
Releases
The Linux App Release workflow (manual dispatch, release operators) builds
the bundles from an existing stable release tag (prerelease tags are
rejected: their semver suffix breaks Debian upgrade ordering) and attaches them to that tag's
GitHub release with a SHA256SUMS.linux-app.txt checksum file. It refuses
tags whose commit is not reachable from main: Linux bundles ship for
main-based releases only.