Add concurrency to prevent conflicting tags/comments #90

	name: Tagbot
	on: [pull_request_target]

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
Check failure on line 8 in .github/workflows/tagbot.yml View workflow run for this annotation GitHub Actions / .github/workflows/tagbot.yml Invalid workflow file `You have an error in your yaml syntax on line 8`
	tagbot:
	# Note: can't rely on github.event.pull_request.merge_commit_sha because pull_request_target
	# does not wait github mergability check, and the value is outdated.
	runs-on: ubuntu-24.04
	permissions:
	pull-requests: write
	steps:
	- name: Checkout base branch for workflow scripts
	uses: actions/checkout@v4

	- name: Checkout PR for computing diff
	uses: actions/checkout@v4
	with:
	ref: "${{ github.event.pull_request.head.sha }}"
	path: 'pr'
	fetch-depth: 0

	- name: Attempt Merge
	id: merge
	run: \|
	git merge --no-commit --no-ff origin/${{ github.event.pull_request.base.ref }}
	continue-on-error: true

	- name: Check merge result
	if: steps.merge.outcome == 'failure'
	run: \|
	echo "Merge conflict detected, failing job."
	exit 1

	- name: set up Python
	uses: actions/setup-python@v5
	with:
	python-version: 3.12

	- name: Get packages
	run: pip install gitpython requests

	- name: Tag and comment
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: python .github/workflows/tagbot.py

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