WEFT OS is a Wayland compositor and application runtime where every app is a WebAssembly component rendered in an isolated Servo WebView.
Find a file
Marco Allegretti ad40271d69 docs: add SpiderMonkey bridge assessment and WebSocket UI endpoint design
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.
2026-03-11 08:42:14 +01:00
.github/workflows ci: add libgbm-dev and libdrm-dev to linux-only job dependencies 2026-03-10 21:33:34 +01:00
crates test(appd): add dispatch integration tests 2026-03-11 08:40:20 +01:00
docs docs: add SpiderMonkey bridge assessment and WebSocket UI endpoint design 2026-03-11 08:42:14 +01:00
infra feat(appd): add weft-appd skeleton crate and service unit 2026-03-11 01:13:18 +01:00
protocol feat(compositor): implement weft-shell-protocol server side 2026-03-11 07:59:56 +01:00
scripts test(appd): add unit tests for IPC message codec and session registry 2026-03-11 08:32:02 +01:00
.gitattributes Initialize Rust workspace and repository metadata 2026-03-10 18:47:06 +01:00
.gitignore Initialize Rust workspace and repository metadata 2026-03-10 18:47:06 +01:00
Cargo.lock feat(appd): implement IPC server with Unix socket and MessagePack framing 2026-03-11 08:25:55 +01:00
Cargo.toml feat(appd): add weft-appd skeleton crate and service unit 2026-03-11 01:13:18 +01:00
justfile Add repository validation and CI checks 2026-03-10 18:47:16 +01:00
README.md Initialize Rust workspace and repository metadata 2026-03-10 18:47:06 +01:00
rust-toolchain.toml Initialize Rust workspace and repository metadata 2026-03-10 18:47:06 +01:00

WEFT OS

WEFT OS is a Linux-based operating system effort built around a Smithay compositor, a Servo-rendered system shell, and a Wasmtime-based application runtime.

Current repository scope

This repository currently contains:

  • the baseline Rust workspace
  • public engineering documentation derived from the authoritative blueprint
  • initial design documents for the shell protocol boundary and the WasmServo channel
  • local and CI validation paths for repository bootstrap work

It does not yet contain a compositor, shell, or application runtime implementation.

Source of truth

The authoritative technical reference for this repository is docu_dev/WEFT-OS-COMPREHENSIVE-BLUEPRINT.md.

Historical blueprint documents exist in docu_dev/, but they are not implementation authority where they conflict with the comprehensive blueprint.

Privacy boundary

docu_dev/ is a private coordination area used during development. It is intentionally ignored by git and is not part of the tracked public repository surface.

Development model

  • Primary development host: Windows workstation
  • Primary runtime target: Linux VM or QEMU guest
  • Core system language: Rust

Validation

On Windows PowerShell:

./infra/scripts/check.ps1

On Linux:

./infra/scripts/check.sh

Repository layout

crates/      Rust workspace members
docs/        Public engineering documentation
infra/       Validation scripts and VM workflow material