name: Lint

on:
  push:
    branches: ["**"]
  pull_request:
    branches: ["**"]

jobs:
  python-lint:
    name: Python (flake8)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Install Python and flake8
        run: |
          apt-get update -qq
          apt-get install -y -qq python3 python3-pip
          # Debian's Python is externally managed (PEP 668); the runner is ephemeral.
          pip3 install --break-system-packages flake8

      - name: Run flake8
        run: flake8 . --exclude=__pycache__,.git