vllm-backport-check-backported

name	vllm-backport-check-backported
description	Check which candidate PRs have already been cherry-picked into the downstream branch. Use after classify-and-filter to mark already_backported on each PR. Fully deterministic — compares merge SHAs and PR titles.
compatibility	Requires git, gh CLI (authenticated), python3, bash
allowed-tools	Bash Read
metadata	{"author":"ZhanqiuHu","version":"1.0","tags":"vllm, backport, triage"}

Check Backported

Scans the downstream repo's git history and merged PRs to detect which upstream bugfixes have already been backported.

Detection Methods

1. SHA match — git log --grep="cherry picked from commit" on the downstream branch
2. Title match — gh pr list --state merged --base <branch> title contains #<number>

Usage

bash scripts/check-backported.sh \
  --input artifacts/backport-triage/filtered.json \
  --downstream /path/to/downstream-repo \
  --branch rhai/0.13.0 \
  --output artifacts/backport-triage/candidates.json

Output

candidates.json — same as input with already_backported: true/false added to each PR object. Prints match counts to stderr.