[dezren39]

Wiring for #2257 (queue task 8042), following the task 7861 triage's recommended mechanism (option 2: fork pin). Not merge-ready yet — the host rebuild and live proof are still owed; this PR is the reviewable wiring half.

What landed where

• Fork: developing-today/nix-openclaw @ da8a763 carries nix/patches/allow-sessions-spawn-headless.patch in the gateway build — one hunk on upstream src/agents/openclaw-tools.ts (pinned 2026.10.7) dropping the embedded exclusion from the createSessionsSpawnTool gate, applied by gateway-postpatch.sh with --fuzz=0 + a grep assertion, gated on sourceInfo.applySessionsSpawnHeadlessPatch (set for the pinned source). An upstream bump that moves the gate fails the build loudly instead of silently shipping an unpatched gateway.
• This PR: the nix-openclaw flake input points at the fork; flake.lock updated (4b261b08 → da8a7633).

Verified

• The patch applies with --fuzz=0 against the exact pinned 2026.10.7 openclaw-tools.ts (gate at line 593).
• nixosConfigurations.amd evaluates with the fork pin (toplevel drv instantiated cleanly).

Still owed before merge (task 8042 is parked on this)

1. Rebuild the laptop host config from this branch and restart the gateway.
2. Mechanism proof on the rebuilt config: a headless/CLI turn spawns agentId="opencode" → acp_sessions row in OpenClaw state + new OpenCode session_v2 row; select:sessions_spawn no longer answers "No deferred tool matched".
3. The agentId="opencode-acp" half of the proof waits on Follow-up (#2229): ACP-runtime agent entry for OpenClaw→OpenCode dispatch (opencode-acp) #2256 / draft PR Wire OpenClaw ACP adapters to Nix runtime plugin #3275 settling, per the triage ordering.

---

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📝 Code Review	⚠️ Failed 2026-11-03T17:53:00.771001Z We couldn’t complete this review. Comment @codex review to try again.	065dcd9	PR opened

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[dezren39]

🤖 Agent note · parked

• Agent: queue worker (repo-worker-code), lane code-d
• Session / ID: task 8042
• Found via: queue claim (resume from awaiting_ci checkpoint)
• Task: PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056 does NOT deliver the patch on the path the host actually builds — verified defect, task 8042 parked on fixing the fork packaging selection.
• Evidence (fresh, laptop, 2026-11-03):
  • Built the fork's openclaw-gateway (developing-today/nix-openclaw @ da8a763): result /nix/store/9ax15k4d6w6d028r1kcmis1b1wpz93fa-openclaw-gateway-2026.10.7; its dist openclaw-tools-QaFYBVQi.mjs:16699 still reads !embedded || options?.allowGatewaySubagentBinding === true ? createSessionsSpawnTool({…}) — the gate the patch was supposed to drop.
  • Evaluating nixosConfigurations.amd from PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056's branch resolves the gateway service to that exact store path (wrapper → openclaw-2026.10.7 → 9ax15k4d…-openclaw-gateway-2026.10.7), so a host rebuild + gateway restart would still ship the unpatched gate.
  • Root cause: the gateway derivation (drv 3xz1j8i661y9c45dv7lwrwz7rv7xlss7) builds with openclaw-gateway-npm-install.sh and its env has NO PATCH_SESSIONS_SPAWN_HEADLESS (only OPENCLAW_PATCH_NPM_DIST_SCRIPT). In the fork, nix/packages/openclaw-gateway.nix sets useNpmPackage = gatewaySrc == null && sourceInfo ? gatewayNpmDepsHash && bundledAcpx != null — the prebuilt npm tarball path never runs gateway-postpatch.sh, so allow-sessions-spawn-headless.patch is dead code on this path.
• Resume condition: fix the fork packaging so the host-resolved gateway is built from source with the patch applied (or the npm dist is patched equivalently): the resuming worker verifies the resolved gateway drv carries PATCH_SESSIONS_SPAWN_HEADLESS and the built dist no longer contains the !embedded || gate, updates the pin in PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056 if the fork rev moves, then does the host rebuild + gateway restart + live spawn proof already recorded on PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056.
• Expectation: effort class m; done = patched gateway verified in the built dist, host rebuilt, live proof recorded, PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056 merged.

[dezren39]

🤖 Agent note · parked

• Agent: queue worker (repo-worker-code), lane code-i
• Session / ID: task 8042 (resume claim, lane I shift 2026-11-03 12:28 CST)
• Found via: queue claim
• Task: The packaging defect chain on PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056 is fixed and verified in the built artifact; parking before the host switch because other fleet work is actively building home generations from newer bases today — the switch must be done from a worktree rebased on current main at switch time, not from this branch's older base.
• Expectation: resume = rebase queue/8042-2257-sessions-spawn-headless on current main, rebuild the home generation, switch, restart openclaw-gateway, then the live CLI spawn proof (agentId="opencode"; the opencode-acp half still waits on issue Follow-up (#2229): ACP-runtime agent entry for OpenClaw→OpenCode dispatch (opencode-acp) #2256 / PR Wire OpenClaw ACP adapters to Nix runtime plugin #3275).

What changed this shift (all verified fresh):

• Root defect confirmed: nix/packages/openclaw-gateway.nix in the fork selected the prebuilt npm package whenever gatewayNpmDepsHash was set, so gateway-postpatch.sh never ran and the sessions_spawn patch never applied.
• Fork developing-today/nix-openclaw pushed: ac752ae (carried source patches force the source build, never the npm path), fd3fb39 (pin the source build's pnpmDepsHash = sha256-XlBV+o+/TodBc2OGJck+H1Al/coOYgm84TFTtd4l4u8=, derived from the fixed-output mismatch), b4f1c9d (pin OPENCLAW_NIX_TSDOWN_MAX_OLD_SPACE_MB=8192 — tsdown refuses to build in the Nix sandbox without an explicit heap).
• Gateway source build now succeeds: /nix/store/4lf9znhin4mbwj0al4lm1nb3a4m6i0fb-openclaw-gateway-unstable-157d8c2b. Its dist calls createSessionsSpawnTool unconditionally; the deployed npm dist still has the !embedded || options?.allowGatewaySubagentBinding === true ? gate — the patch lands.
• PR feat(openclaw): pin nix-openclaw fork carrying the sessions_spawn headless patch (#2257) #5056 updated: flake.lock nix-openclaw pin bumped to fork b4f1c9d (commit d7e983032); nixosConfigurations.amd evaluates cleanly with the pin.