config: show a nice error message if not config is available #138

	name: Poetry

	on: [push, pull_request]

	jobs:
	ci:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Install Python
	uses: actions/setup-python@v5
	- name: Install poetry
	uses: abatilo/actions-poetry@v3
	- name: Install shellcheck
	uses: bewuethr/shellcheck-action@v2
	- name: Setup a local virtual environment
	run: \|
	poetry config virtualenvs.create true --local
	poetry config virtualenvs.in-project true --local
	- uses: actions/cache@v4
	name: Define a cache for the virtual environment based on the dependencies lock file
	with:
	path: ./.venv
	key: venv-${{ hashFiles('poetry.lock') }}
	- name: Install the project dependencies
	run: poetry install
	- name: Lint check with python black
	run: poetry run black --check --verbose .
	- name: Isort check
	run: poetry run isort . --check --diff
	- name: Pytest check
	run: poetry run pytest -rP

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