ci: fix pip setup #11

	name: CI
	permissions:
	contents: read
	on:
	pull_request:
	push:
	env:
	PYTHON_VERSION: "3.9"
	jobs:
	linting:
	runs-on: ubuntu-latest
	name: Lint
	steps:
	- name: Check out source repository
	uses: actions/checkout@v3
	- name: Set up Python environment
	uses: actions/setup-python@v4
	with:
	python-version: ${{ env.PYTHON_VERSION }}
	cache: 'pip' # caching pip dependencies
	- name: Install Python requirements.
	run: pip install -r requirements.txt -r dev-requirements.txt
	- name: Black Format
	uses: psf/black@stable
	- name: isort
	uses: isort/isort-action@master
	with:
	requirementsFiles: "requirements.txt dev-requirements.txt"
	- name: flake8 Lint
	uses: py-actions/flake8@v2
	- name: mypy Typecheck
	run: mypy .

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