Watch Arch Linux News → Update Pacsea Gist #79
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| # .github/workflows/arch-news-watcher.yml | |
| name: Watch Arch Linux News → Update Pacsea Gist | |
| on: | |
| schedule: | |
| - cron: '0 * * * *' # every hour | |
| workflow_dispatch: # manual trigger | |
| jobs: | |
| check-and-update: | |
| runs-on: ubuntu-latest | |
| environment: Gist | |
| steps: | |
| - name: Fetch Arch Linux RSS | |
| id: rss | |
| run: | | |
| curl -s https://archlinux.org/feeds/news/ > current.xml | |
| HASH=$(sha256sum current.xml | cut -d' ' -f1) | |
| echo "hash=$HASH" >> $GITHUB_OUTPUT | |
| - name: Check cache (skip if feed unchanged) | |
| uses: actions/cache@v4 | |
| id: cache | |
| with: | |
| path: rss.hash | |
| key: arch-rss-${{ steps.rss.outputs.hash }} | |
| - name: Parse RSS + build JSON + update Gist | |
| if: steps.cache.outputs.cache-hit != 'true' | |
| env: | |
| GH_TOKEN: ${{ secrets.GIST_TOKEN }} | |
| GIST_ID: "d2e6016b8d7a90f813a582078208e9bd" | |
| GIST_FILENAME: "announcement.json" # ← set this to the actual filename in your Gist | |
| PACSEA_REPO: ${{ github.repository }} | |
| run: | | |
| pip install feedparser html2text -q | |
| python3 << 'EOF' | |
| import feedparser, html2text, json, re, os, urllib.error, urllib.request | |
| from datetime import datetime | |
| def github_request(url, token): | |
| return urllib.request.Request( | |
| url, | |
| headers={ | |
| "Authorization": f"Bearer {token}", | |
| "Accept": "application/vnd.github+json", | |
| "User-Agent": "pacsea-arch-news-watcher", | |
| }, | |
| ) | |
| def github_json(url, token): | |
| with urllib.request.urlopen(github_request(url, token)) as resp: | |
| return json.loads(resp.read()) | |
| def resolve_version_tag(repo, token): | |
| override = os.environ.get("PACSEA_VERSION", "").strip() | |
| if override: | |
| return override.lstrip("v") | |
| base = f"https://api.github.com/repos/{repo}" | |
| try: | |
| rel = github_json(f"{base}/releases/latest", token) | |
| return rel["tag_name"].lstrip("v") | |
| except urllib.error.HTTPError as e: | |
| if e.code != 404: | |
| raise | |
| releases = github_json(f"{base}/releases?per_page=30", token) | |
| for rel in releases: | |
| if rel.get("draft"): | |
| continue | |
| return rel["tag_name"].lstrip("v") | |
| tags = github_json(f"{base}/tags?per_page=30", token) | |
| if not tags: | |
| raise SystemExit( | |
| f"No releases or tags for {repo}; " | |
| "publish a release/tag or set PACSEA_VERSION." | |
| ) | |
| return tags[0]["name"].lstrip("v") | |
| # ── 1. Parse latest RSS entry ────────────────────────────────────── | |
| feed = feedparser.parse("current.xml") | |
| entry = feed.entries[0] | |
| title = entry.title.strip() | |
| pub_date = datetime(*entry.published_parsed[:6]) | |
| date_str = pub_date.strftime("%d-%m-%Y") # DD-MM-YYYY | |
| # ── 2. Convert HTML content → clean Markdown ────────────────────── | |
| h = html2text.HTML2Text() | |
| h.ignore_links = False | |
| h.body_width = 0 | |
| h.ignore_images = True | |
| content_md = h.handle(entry.summary).strip() | |
| # ── 3. Build ID: "DD-MM-YYYY-news-title-abbrev" ─────────────────── | |
| title_slug = re.sub(r'[^a-z0-9]+', '-', title.lower()).strip('-')[:40] | |
| news_id = f"{date_str}-{title_slug}" | |
| # ── 4. Resolve current version (release tag) from GitHub API ──────── | |
| repo = os.environ["PACSEA_REPO"] | |
| token = os.environ["GH_TOKEN"] | |
| version = resolve_version_tag(repo, token) | |
| parts = version.split(".") | |
| # ── 5. min_version = current major.minor-1.0 ────────────────────── | |
| minor = max(0, int(parts[1]) - 1) | |
| min_ver = f"{parts[0]}.{minor}.0" # 0.8.5 → 0.7.0 | |
| # ── 6. Assemble final JSON payload ──────────────────────────────── | |
| payload = { | |
| "id": news_id, | |
| "title": title, | |
| "content": content_md, | |
| "min_version": min_ver, | |
| "max_version": None, | |
| "expires": None | |
| } | |
| filename = os.environ["GIST_FILENAME"] | |
| with open(filename, "w", encoding="utf-8") as f: | |
| json.dump(payload, f, indent=2, ensure_ascii=False) | |
| print(f"✔ id: {news_id}") | |
| print(f"✔ title: {title}") | |
| print(f"✔ min_version: {min_ver} (from release {version})") | |
| EOF | |
| # ── 7. Push to Gist ─────────────────────────────────────────────── | |
| gh gist edit "$GIST_ID" "$GIST_FILENAME" | |
| # `actions/cache` post-step only saves if this path exists; write after successful push. | |
| echo "${{ steps.rss.outputs.hash }}" > rss.hash |