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https://github.com/kuhyx/utils.git
synced 2026-11-10 19:47:38 +01:00
Krzysztof kuhy Rudnicki
7096c102cd
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AwtowrowDXx6ccmWVPkCaF
68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
"""Give a repo's `pre-commit` CI workflow the shared-gate checkout it needs.
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The fourth piece of the install, and the one that is easy to forget because
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nothing local reveals it: `.pre-commit-config.yaml` gains a hook that execs
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`scripts/check_dependency_freshness.sh`, which delegates to `~/src/utils`. That
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path exists on this machine and does not exist on a runner, so a repo whose
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`pre-commit` workflow runs `pre-commit/action` against a bare checkout goes red
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with "shared gate not found at /home/runner/utils/..." -- green locally, red in
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CI, with no diff that explains it. screen-locker, wake-alarm and diet-guard
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each hit it and each got the same twelve lines pasted in by hand.
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Only repos that HAVE such a workflow are touched; the dedicated
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`dependency-freshness.yml` already carries its own checkout.
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"""
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from __future__ import annotations
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from pathlib import Path
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PRECOMMIT_WORKFLOW = Path(".github/workflows/pre-commit.yml")
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MARKER = "UTILS_ROOT"
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CHECKOUT = "- uses: actions/checkout@v4"
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PATCH = """\
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# Hooks here delegate to the shared gates in kuhyx/utils. Without this
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# checkout they exit 1 with "shared gate not found at
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# /home/runner/utils/..." -- green locally, red on every runner.
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- name: Check out the shared gates
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uses: actions/checkout@v4
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with:
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repository: kuhyx/utils
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path: .utils
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- name: Point the delegates at that checkout
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run: echo "UTILS_ROOT=$GITHUB_WORKSPACE/.utils" >> "$GITHUB_ENV"\
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"""
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def needs_patch(repo: Path) -> bool:
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"""True when a pre-commit workflow exists and cannot find the shared gate."""
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target = repo / PRECOMMIT_WORKFLOW
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if not target.is_file():
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return False
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return MARKER not in target.read_text(encoding="utf-8")
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def patch(repo: Path) -> bool:
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"""Insert the checkout after the workflow's own `actions/checkout`.
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Inserting after the repo's own checkout rather than at the top of `steps:`
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keeps `$GITHUB_WORKSPACE` populated before `.utils` lands inside it, and
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leaves every surrounding comment intact -- a YAML round-trip would drop
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the ones explaining why each hook is there.
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"""
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if not needs_patch(repo):
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return False
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target = repo / PRECOMMIT_WORKFLOW
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lines = target.read_text(encoding="utf-8").split("\n")
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anchors = [n for n, line in enumerate(lines) if line.strip() == CHECKOUT]
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if not anchors:
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raise ValueError(
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f"{target} has no `{CHECKOUT}` step to insert after; "
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"add the shared-gate checkout by hand, then re-run"
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)
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lines[anchors[0] + 1 : anchors[0] + 1] = PATCH.split("\n")
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target.write_text("\n".join(lines), encoding="utf-8")
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return True
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