ci: arm64-lane pilot (additive shellcheck on Mac runner) [#233] #1553

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hongming merged 1 commits from ci/mac-arm64-pilot-shellcheck into main 2026-05-19 01:56:17 +00:00

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hongming commented 2026-05-19 01:16:20 +00:00

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Mac-CI dual-track #233 pilot. Pairs with internal#543 (the durable RFC).

What

Adds one new workflow .gitea/workflows/lint-shellcheck-arm64-pilot.yml (88 LoC) that:

• Targets runs-on: [self-hosted, arm64] — a label combination NO existing runner has today.
• Runs shellcheck --severity=error against .gitea/scripts/*.sh.
• Asserts the running runner is actually arm64 (fails fast if amd64 sneaks in).

Why this is safe

• The new workflow status context is NOT in branch_protections/main.status_check_contexts (verified live: only CI / all-required (pull_request) is required). Until a Mac arm64 runner registers, this workflow sits PENDING and doesnt block any PR.
• 88 LoC, under the <=100 budget for the task.
• No paths: filter on the workflow (feedback_path_filtered_workflow_cant_be_required).
• No docker.sock, no privileged ops, no secrets read.
• Additive: no existing workflow is modified.

Why shellcheck

• Pure userspace, no docker, no privilege.
• koalaman/shellcheck publishes a native arm64 binary, so arch is not a tool-side variable — disagreement would be runner-side.
• .gitea/scripts/*.sh exists today and is non-trivial.

Vendor-doc check

• act_runner supports runs-on: [self-hosted, arm64] label matching (Gitea Actions docs, parity with GH Actions self-hosted label routing).
• actions/checkout@v4 ships arm64. apt-get install shellcheck works on arm64 ubuntu base images; arm64 fallback download path also included.

NOT auto-merged.

Requires non-author review per reference_merge_gate_model_changed_2026_05_18 (req_approvals=2, dismiss_stale=true).

Mac-CI dual-track #233 pilot. Pairs with [internal#543](https://git.moleculesai.app/molecule-ai/internal/pulls/543) (the durable RFC). ## What Adds one new workflow `.gitea/workflows/lint-shellcheck-arm64-pilot.yml` (88 LoC) that: - Targets `runs-on: [self-hosted, arm64]` — a label combination NO existing runner has today. - Runs `shellcheck --severity=error` against `.gitea/scripts/*.sh`. - Asserts the running runner is actually arm64 (fails fast if amd64 sneaks in). ## Why this is safe - The new workflow status context is **NOT** in `branch_protections/main.status_check_contexts` (verified live: only `CI / all-required (pull_request)` is required). Until a Mac arm64 runner registers, this workflow sits PENDING and doesnt block any PR. - 88 LoC, under the <=100 budget for the task. - No paths: filter on the workflow (`feedback_path_filtered_workflow_cant_be_required`). - No docker.sock, no privileged ops, no secrets read. - Additive: no existing workflow is modified. ## Why shellcheck - Pure userspace, no docker, no privilege. - `koalaman/shellcheck` publishes a native arm64 binary, so arch is not a tool-side variable — disagreement would be runner-side. - `.gitea/scripts/*.sh` exists today and is non-trivial. ## Vendor-doc check - `act_runner` supports `runs-on: [self-hosted, arm64]` label matching (Gitea Actions docs, parity with GH Actions self-hosted label routing). - `actions/checkout@v4` ships arm64. `apt-get install shellcheck` works on arm64 ubuntu base images; arm64 fallback download path also included. ## NOT auto-merged. Requires non-author review per `reference_merge_gate_model_changed_2026_05_18` (req_approvals=2, dismiss_stale=true).

hongming added 1 commit 2026-05-19 01:16:20 +00:00

ci: add arm64-lane pilot (additive shellcheck on Mac runner) ... 4d6be109c7

Mac-CI dual-track #233 pilot. Adds a single additive non-required
workflow that targets [self-hosted, arm64] runners and runs shellcheck
against .gitea/scripts/*.sh. Until a Mac arm64 runner is registered
with the `arm64` label, this workflow sits PENDING, which is fine —
`arm64` is NOT in branch_protections/main.status_check_contexts (only
'CI / all-required (pull_request)' is required, verified live via API).

Why shellcheck for the pilot: pure userspace, no docker.sock, no
privileged ops, identical output across arm64/amd64, narrow blast
radius. A clean signal for whether the lane works.

Pairs with internal#543 (RFC: Mac arm64 native multi-arch runner-base).
88 LoC, well under the <=100 line guidance. No required gate changes.

core-devops approved these changes 2026-05-19 01:53:37 +00:00

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5-axis review on arm64 pilot: correctness OK (sanity arch check fails fast if amd64 routed); readability OK (clear comments on label routing, fallback clone, install paths); arch OK (additive non-required pilot; pairs with internal#543 RFC); security OK (no docker.sock, no privileged ops); perf N/A pilot. ADDITIVE NOT REQUIRED — safe to sit pending until Mac runner is registered. APPROVED.

5-axis review on arm64 pilot: correctness OK (sanity arch check fails fast if amd64 routed); readability OK (clear comments on label routing, fallback clone, install paths); arch OK (additive non-required pilot; pairs with internal#543 RFC); security OK (no docker.sock, no privileged ops); perf N/A pilot. ADDITIVE NOT REQUIRED — safe to sit pending until Mac runner is registered. APPROVED.

infra-sre approved these changes 2026-05-19 01:53:37 +00:00

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Infra review: runs-on: [self-hosted, arm64] gates correctly; until Mac runner registers the workflow pends — does NOT block merge per branch_protections. apt-fallback to v0.10.0 arm64 tarball is sound. APPROVED.

Infra review: runs-on: [self-hosted, arm64] gates correctly; until Mac runner registers the workflow pends — does NOT block merge per branch_protections. apt-fallback to v0.10.0 arm64 tarball is sound. APPROVED.

hongming merged commit 57364c1bed into main 2026-05-19 01:56:17 +00:00

hongming referenced this issue from a commit 2026-05-19 01:56:19 +00:00

Merge pull request 'ci: arm64-lane pilot (additive shellcheck on Mac runner) [#233]' (#1553) from ci/mac-arm64-pilot-shellcheck into main

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Reference: molecule-ai/molecule-core#1553