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id: F12.8 guest SDKs — Rust + Zig/AssemblyScript, component-model decision #1065
Description
F12.8 — Second and third guest SDKs
From the Phase 12 plan (.opencode/plans/phase-12-platform-flexibility.md, workstream C):
A Rust SDK for wasm32-unknown-unknown and one of TypeScript (AssemblyScript) or Zig, each with screen, json, grid, and cap helpers equal to the Roc libraries, and an example world. Evaluate the Wasm component model and WIT as the long-term interface, and record the decision. Depends on F12.7.
Exit: each SDK passes the F12.7 conformance suite and ships a playable example.
Coordination (2026-10-26 reprioritization, per Drew): every id roadmap item now has its own GitHub issue, and priority encodes the order: (1) the path to Phase 12 — now + priority/high; (2) Phase 12 itself — next; (3) Phase 13 and long-term ideas — priority/low. The dashboard mirrors this list (org Project "Developing Today" #4, Area id-train; Grist Program roadmap, Area id). If this item turns out to be blocked, wrong, or superseded, park or close it with a note rather than letting it stall the queue — dropping an issue is always allowed; silently stalling is not.
Activity
developing-today commentedon Oct 27, 2026
CODE-209
dezren39 commentedon Nov 1, 2026
🤖 Agent note · picked up
34 remaining items
dezren39 commentedon Nov 3, 2026
agent-note:v1
state: triaged (coverage pass)
Coverage pass 2026-11-03: reviewed in the fleet-wide per-issue pass (drift / overlap / already-handled / stale / blockers / ordering). Verdict: still live; queued in repo-health-code-pilot as triage at priority 40 (priority/normal). If this is already handled at current main, the triage closes it with evidence; if it needs splitting, the triage files the split.
Found via: coverage pass 2026-11-03
dezren39 commentedon Nov 3, 2026
🤖 Agent note · picked up
dezren39 commentedon Nov 3, 2026
🤖 Agent note · done
pkgs/idhas no Rustwasm32-unknown-unknownguest SDK, no Zig or AssemblyScript guest SDK, and zero.witfiles / WIT directories. The reference Roc helpers the SDKs must equal are present:pkgs/id/examples/roc-world/Screen.roc,RocJson.roc,RocGrid.roc,RocCap.roc. The only ABI artifact is host-side (pkgs/id/examples/roc-world/host/src/roc_platform_abi.zig) — not a guest SDK..opencode/plans/phase-12-platform-flexibility.md) confirms the ordering F12.7 → F12.8 → F12.9 and names F12.7 as a first-slice item.pkgs/idyet — that evaluation is part of this issue's work, after the ABI spec exists.wasm32-unknown-unknownwithscreen/json/grid/caphelpers equal to the Roc libraries; (2) one of AssemblyScript or Zig (choice recorded with the component-model evaluation); (3) one playable example world per SDK; (4) record the Wasm component-model / WIT decision in the repo. Exit: each SDK passes the F12.7 conformance suite.triaged; in-flight labels removed. Issue id: F12.8 guest SDKs — Rust + Zig/AssemblyScript, component-model decision #1065 stays open, ordered behind issue id: F12.7 ABI specification and conformance suite #1064.