Assesses the original concern that the weft-appd UI endpoint for the
system-ui.html page would require custom SpiderMonkey bindings injected
into Servo.
Conclusion: custom SpiderMonkey bindings are not required. Servo's
standard WebSocket API satisfies all UI endpoint requirements (send
requests, receive push notifications, structured JSON payloads).
Documents:
- What the UI endpoint needs (send/receive structured messages,
session-scoped, local transport).
- Servo's relevant capabilities: WebSocket implemented, fetch
implemented, custom embedder APIs not stable/not needed.
- Proposed implementation: tokio-tungstenite WebSocket listener in
weft-appd on 127.0.0.1; port published to XDG_RUNTIME_DIR for
discovery; broadcast channel for APP_READY push to all connected
clients; JSON framing (same Request/Response types via serde_json).
- Scope boundaries: does not replace the Unix socket path (servo-shell
native IPC); does not require Servo modification.
Includes winit Wayland input audit for servo-shell integration planning.
New files:
- crates/weft-servo-shell/: new workspace member
- Cargo.toml: anyhow + tracing deps; no servo dep yet (requires git
dependency on github.com/servo/servo with multi-minute build; deferred
until embedder contract is confirmed)
- src/main.rs: reads WAYLAND_DISPLAY and WEFT_SYSTEM_UI_HTML, locates
system-ui.html from packaged path, calls embed_servo() stub that
returns a descriptive error explaining the integration work remaining
- infra/shell/system-ui.html: system UI document per blueprint Section 5
DOM structure (weft-desktop, weft-wallpaper, weft-taskbar, weft-launcher,
weft-notification-center, weft-window); includes clock and launcher toggle
- infra/systemd/servo-shell.service: Requires+After weft-compositor.service,
Type=simple, Restart=on-failure
- docs/architecture/winit-wayland-audit.md: audit of winit 0.30.x Wayland
backend against WEFT input requirements; identifies keyboard shortcut
inhibit gap, touch gesture gap, IME incomplete (zwp_text_input_v3),
frame pacing absent (wp_presentation_time), DMA-BUF unverified;
none block initial integration; all tracked as pre-GA work items
Modified:
- Cargo.toml: add weft-servo-shell to workspace members
- scripts/wsl-check.sh: switch to --workspace for all three gates
