Lint

feat(header): add customizable banner to header #2899

	name: Lint

	on:
	push:
	branches:
	- '**'
	pull_request:
	branches:
	- 'main'

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-python@v5
	id: cp311
	with:
	python-version: "3.11"

	- name: Install Poetry
	uses: snok/install-poetry@v1
	with:
	virtualenvs-create: true
	virtualenvs-in-project: true

	- name: Get full Python version
	id: full-python-version
	run: echo "version=$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))")" >> $GITHUB_OUTPUT

	- name: Load cached venv
	id: cached-poetry-dependencies
	uses: actions/cache@v4
	with:
	path: .venv
	key: venv-${{ runner.os }}-cache-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock')}}-v20210414

	- name: Install dependencies
	run: poetry install
	if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'

	- name: Activate venv
	run: \|
	echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
	echo "PYTHONPATH=$GITHUB_WORKSPACE" >> $GITHUB_ENV
	echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH

	- name: mypy Static Type Checker
	run: \|
	mypy \
	--follow-imports=skip \
	--exclude 'migrations/*' \
	.

	- name: Flynt f-string Formatter
	run: >
	flynt .
	--line-length=79
	--transform-concats
	--fail-on-change

	- name: Black Code Formatter
	uses: psf/black@stable

	lint-isort:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-python@v5
	with:
	python-version: "3.9"

	- name: isort Import Sorter
	uses: isort/isort-action@v1

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