9. Delete old workflow runs #18

	name: "9. Delete old workflow runs"
	on:
	schedule:
	# Run monthly, at 00:00 on the 1st day of month.
	# https://pubs.opengroup.org/onlinepubs/9699919799/utilities/crontab.html#tag_20_25_07
	- cron: '0 0 1 * *'

	# Allow manual triggering
	workflow_dispatch:
	inputs:
	retain_days:
	description: 'Delete runs older than this many days'
	required: true
	type: number
	default: 30
	min_runs:
	description: 'Minimum runs to keep'
	required: true
	type: number
	default: 20

	jobs:
	delete_runs:
	runs-on: ubuntu-latest
	steps:
	- name: "Delete old workflow runs"
	uses: Mattraks/delete-workflow-runs@v2
	with:
	token: ${{ github.token }}
	repository: ${{ github.repository }}
	retain_days: ${{ inputs.retain_days \|\| 30 }}
	keep_minimum_runs: ${{ inputs.min_runs \|\| 20 }}

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