ci: Modularize CI pipeline and test Python >= 3.11 #38

	name: Backend

	on:
	pull_request:
	paths:
	- "src/**"
	- "tests/**"
	- "pyproject.toml"
	- "Makefile"
	- "requirements*.txt"
	- ".github/workflows/backend.yml"

	permissions:
	contents: read

	jobs:
	lint-backend:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	cache: 'pip'
	- name: Lint backend
	run: \|
	python -m pip install --upgrade pip
	python -m pip install --upgrade pre-commit

	pre-commit run --all-files ruff

	test-backend:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: "3.12"
	cache: 'pip'
	- name: Build frontend and share library
	shell: bash
	run: make build-frontend
	- name: Build package distributions
	run: \|
	python -m pip install --upgrade pip
	python -m pip install --upgrade build
	python -m build
	- name: Install
	run: \|
	python -m pip install dist/*.whl --no-dependencies
	python -m pip install -r requirements.txt -r requirements-test.txt
	- name: Pytest
	timeout-minutes: 5
	run: python -m pytest

	test-backend-on-old-python:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.9", "3.10", "3.11"]
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	- continue-on-error: True
	run: \|
	python --version

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