Add backwards compatibility to python 3.8 #24

	name: Run checks
	on:
	push:
	pull_request:

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

	jobs:
	precommit:
	name: pre-commit
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Setup python
	uses: actions/setup-python@v5
	with:
	python-version: '3.10'
	check-latest: true
	- name: Install pre-commit
	run: pip install pre-commit
	- name: Run checks
	run: pre-commit run -a -v
	- name: Git status
	if: always()
	run: git status
	- name: Full diff
	if: always()
	run: git diff
	tox:
	name: test python ${{ matrix.py }}
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	py:
	- "3.12"
	- "3.11"
	- "3.10"
	steps:
	- uses: actions/checkout@v4
	- name: Setup python for test ${{ matrix.py }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.py }}
	- name: Install dependencies
	run: sudo apt -yy update && sudo apt -yy install graphviz
	- name: Install tox
	run: python -m pip install tox-gh>=1.2
	- name: Setup test suite
	run: tox -vv --notest
	- name: Run test suite
	run: tox --skip-pkg-install

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