AgentSkillsCN

ci-autofix-loop

针对当前git分支/PR，构建端到端CI修复循环（GitHub Actions + Buildkite）。当用户要求“修复CI”“让检查通过”或“解决失败的检查”时，该工作流应：(1) 通过`gh pr checks`发现失败的检查；(2) 通过提供商日志（Buildkite日志工具或`gh run view --log-failed`）诊断失败原因；(3) 应用最小化的代码修复；(4) 运行`code-simplifier` + `code-review`；(5) 提交并推送；(6) 重复迭代，直到剩余的失败无法通过代码更改修复。

SKILL.md
--- frontmatter
name: ci-autofix-loop
description: >
  End-to-end CI fixer loop for the current git branch/PR (GitHub Actions + Buildkite).
  Use when asked to “fix CI”, “make checks green”, or “address failing checks”, and the workflow should:
  (1) discover failing checks via `gh pr checks`,
  (2) diagnose failures via provider logs (Buildkite log tooling/API or `gh run view --log-failed`),
  (3) apply minimal code fixes,
  (4) run `code-simplifier` + `code-review`,
  (5) commit + push, and
  (6) iterate until remaining failures are unfixable via code change.

CI Autofix Loop

Assumptions

  • •Work in a git repo with a PR (preferred) or a branch pushed to a remote.
  • •gh is authenticated for the repo.
  • •If Buildkite checks exist, Buildkite access is available via BUILDKITE_TOKEN.

Workflow

0) Identify PR + base

  • •Prefer PR context:
    • •gh pr view --json number,baseRefName,headRefName,url
  • •If no PR, operate on the current branch and upstream tracking ref:
    • •git status -sb
    • •git rev-parse --abbrev-ref --symbolic-full-name @{u} (if set)

1) Enumerate failing checks

  • •gh pr checks --json name,state,link,description
  • •If check entries are missing a URL, fall back to:
    • •gh pr view --json statusCheckRollup
  • •Group checks into:
    • •Buildkite: link is a buildkite.com URL (often buildkite/<pipeline> contexts).
    • •GitHub Actions: link is a github.com/actions URL.
    • •Manual/unfixable-by-code: e.g. codeownerous (review requirements), org policy checks, or anything that is purely approval-gated.

2) Diagnose + fix (one failure at a time)

Buildkite failures

  1. •Normalize to a base build URL:
    • •https://buildkite.com/<org>/<pipeline>/builds/<num>
  2. •Prefer local log tooling when available:
    • •If the repo contains .codex/skills/buildkite-fetch-logs/scripts/get_buildkite_logs.py, use it to download failed logs to a temp dir and inspect the failing job(s).
    • •If it isn’t there, search for it in the workspace or CODEX_HOME before falling back to the API.
    • •Otherwise, use the Buildkite API (curl -H "Authorization: Bearer $BUILDKITE_TOKEN" ...) to inspect job state + logs.
  3. •Common “not a code bug” pattern: stale branch / merge base check
    • •Symptom: log contains “Your PR is too stale” / “must include commit <sha>”.
    • •Fix:
      • •git fetch <remote> <baseBranch>
      • •git rebase <remote>/<baseBranch> (resolve conflicts if any)
      • •git push --force-with-lease
  4. •Otherwise, map the error to code, implement the smallest fix, and run the exact test command(s) mentioned in the failing logs when feasible.

GitHub Actions failures

  1. •Extract the run/job IDs from the check URL if present:
    • •Run URL: .../actions/runs/<run_id>
    • •Job URL: .../actions/runs/<run_id>/job/<job_id>
  2. •Pull failing logs and identify the exact failing command:
    • •Run-level: gh run view <run_id> --log-failed
    • •Job-level (when you have <job_id>): gh run view <run_id> --job <job_id> --log-failed
  3. •Map failure → code:
    • •Find referenced files/commands; run the smallest local equivalent (formatter/typecheck/unit test) if feasible.
  4. •Implement the minimal fix and rely on the push-triggered workflow re-run for validation.
  5. •If failures appear flaky or infra-only (no deterministic repro / no actionable logs), treat as unfixable-by-code and stop with a summary + links.

3) Simplify and review before committing

  • •Run code-simplifier on the current diff (keep behavior identical; avoid unrelated refactors).
  • •Run code-review against the PR base (or upstream branch) and address any blockers.

4) Commit + push

  • •Prefer one focused commit per logical CI fix (or squash related changes if they’re tightly coupled).
  • •Push to the PR branch.
  • •If you rebased or rewrote history, use git push --force-with-lease (never plain --force).

5) Iterate until done

  • •Re-check:
    • •gh pr checks
  • •Stop when:
    • •All CI checks are green or
    • •Remaining items are not addressable via code changes (review-required gates, infra “broken” steps with no logs, external scanners, etc.).
  • •If you hit repeated failures with no new signal after 2–3 iterations, stop and summarize what’s blocking (with concrete URLs).

Guardrails

  • •Never print or persist secrets (Buildkite token, GitHub tokens).
  • •Clean up temp log directories after use.
  • •Prefer minimal, reviewable diffs; avoid “drive-by” refactors.