chore(release): create pseudoversion tag on each push to main (#186) #1

	# Tags each new commit on the default branch with a Go pseudo-version so downstream
	# monorepos can pin any merged commit in go.mod:
	#
	# require github.com/uber/submitqueue v0.0.0-20250602143045-abcdef123456
	#
	# Format matches https://go.dev/ref/mod#pseudo-versions (v0.0.0-yyyymmddhhmmss-rev, UTC).

	name: Tag Go pseudo-version

	on:
	push:
	branches:
	- main

	permissions:
	contents: write

	concurrency:
	group: tag-go-pseudoversion-${{ github.repository }}
	cancel-in-progress: false

	jobs:
	tag:
	name: Create and push pseudo-version tag
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Compute pseudo-version tag and push
	run: \|
	set -euo pipefail
	SHA="${GITHUB_SHA}"
	TS="$(git show -s --format=%ct "${SHA}")"
	WHEN="$(date -u -d "@${TS}" +%Y%m%d%H%M%S)"
	REV="$(git rev-parse --short=12 "${SHA}")"
	TAG="v0.0.0-${WHEN}-${REV}"

	echo "Computed tag: ${TAG} for ${SHA}"

	if git ls-remote --tags origin "refs/tags/${TAG}" \| grep -q .; then
	echo "Tag ${TAG} already exists on origin; skipping."
	exit 0
	fi

	git tag "${TAG}" "${SHA}"
	git push origin "refs/tags/${TAG}"

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