Add Github Action to label PRs owned by the SC

.github/workflows/labeler.yml

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+---
+# Copyright (C) 2023 Maxwell G <maxwell@gtmx.me>
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+"on":
+  pull_request_target:
+
+name: "Triage PRs"
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  label_prs:
+    runs-on: ubuntu-latest
+    name: "Label PRs"
+    steps:
+      - name: Checkout parent repository
+        uses: actions/checkout@v3
+      - name: Install Python 3.11
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+      - name: Setup venv
+        run: |
+          python -m venv venv
+          ./venv/bin/pip install -r hacking/pr_labeler/requirements.txt
+      - name: Run the PR labeler
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          ./venv/bin/python hacking/pr_labeler/label.py ${{ github.event.number }}

hacking/pr_labeler/label.py

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+# Copyright (C) 2023 Maxwell G <maxwell@gtmx.me>
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+
+import github
+import github.Auth
+import github.PullRequest
+import typer
+from codeowners import CodeOwners, OwnerTuple
+
+OWNER = "ansible"
+REPO = "ansible-documentation"
+LABELS_BY_CODEOWNER: dict[OwnerTuple, list[str]] = {
+    ("TEAM", "@ansible/steering-committee"): ["sc_approval"],
+}
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parent.parent
+CODEOWNERS = (ROOT / ".github/CODEOWNERS").read_text("utf-8")
+
+
+def handle_codeowner_labels(pr: github.PullRequest.PullRequest) -> None:
+    labels = LABELS_BY_CODEOWNER.copy()
+    owners = CodeOwners(CODEOWNERS)
+    files = pr.get_files()
+    for file in files:
+        for owner in owners.of(file.filename):
+            if labels_to_add := labels.pop(owner, None):
+                print("Adding labels to", f"{pr.id}:", *map(repr, labels_to_add))
+                pr.add_to_labels(*labels_to_add)
+        if not labels:
+            return
+
+
+APP = typer.Typer()
+
+
+@APP.command()
+def main(pr_number: int) -> None:
+    gclient = github.Github(auth=github.Auth.Token(os.environ["GITHUB_TOKEN"]))
+    repo = gclient.get_repo(f"{OWNER}/{REPO}")
+    pr = repo.get_pull(pr_number)
+    if pr.state != "open":
+        print("Refusing to process closed ticket")
+        return
+    handle_codeowner_labels(pr)
+
+
+if __name__ == "__main__":
+    APP()

hacking/pr_labeler/requirements.txt

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+codeowners
+pygithub
+typer