Automatically check licenses #4

	name: licenses

	# TODO: trigger only on pyproject.toml changes

	on:
	pull_request:
	types: [opened, synchronize]
	push:
	# Always run on push to main. The build cache can only be reused
	# if it was saved by a run from the repository's default branch.
	# The run result will be identical to that from the merge queue
	# because the commit is identical, yet we need to perform it to
	# seed the build cache.
	branches:
	- main

	env:
	HATCH_VERSION: 1.7.0

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Unshallow
	run: git fetch --prune --unshallow

	- name: Install Python
	uses: actions/setup-python@v4
	with:
	cache: 'pip'
	cache-dependency-path: '**/pyproject.toml'
	python-version: '3.10'

	- name: Get explicit and transitive dependencies
	run: \|
	pip install .
	pip freeze > requirements.txt

	- name: Check python
	id: license_check_report
	uses: pilosus/action-pip-license-checker@v2
	with:
	requirements: 'requirements.txt'
	fail: 'Copyleft'
	exclude: '(?i)^(pylint\|certifi\|aio[-_]).'

	- name: Print report
	if: ${{ always() }}
	run: echo "${{ steps.license_check_report.outputs.report }}"

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