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Kernel Build #188

	name: Kernel Build
	on:
	# Weekly auto-build
	schedule:
	- cron: "0 0 * * 1"
	# A merge that changes a kernel config snippet changes the built kernel
	# without moving any kernel branch, so `new` would see nothing to do. Force a
	# rebuild now rather than waiting for the weekly cron. On main the tags carry
	# no branch suffix, so this overwrites the canonical tags with the new config
	# content.
	push:
	branches:
	- main
	paths:
	- "configs/**"
	workflow_dispatch:
	inputs:
	spec:
	description: 'Build Specification'
	type: string
	default: "new"
	required: true
	publish:
	description: 'Publish Builds'
	type: boolean
	default: true
	required: true

	# this job will publish images, and needs higher perms.
	permissions:
	contents: read
	packages: write
	id-token: write
	jobs:
	build:
	uses: ./.github/workflows/matrix.yml
	secrets: inherit
	with:
	# schedule/push carry no inputs, so these fallbacks are what the cron and
	# the configs/** push actually build. The cron only wants branches that
	# have moved (`new`); a configs/** merge changed the build inputs without
	# moving anything, so it has to force `rebuild`.
	spec: ${{ inputs.spec \|\| (github.event_name == 'push' && 'rebuild' \|\| 'new') }}
	publish: ${{ inputs.publish == '' \|\| inputs.publish }}