.github/workflows/black.yml

name: Lint

on: [push, pull_request]

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: "Collect stragglers that Black misses"
        id: stragglers
        run: |
          echo "::set-output name=missed::$(
          find bin runtests -type f -not -name '*.py' -not -name '*.sh' | \
          xargs grep -l '#!/usr/bin/env python' | tr $'\n' ' ')"
      - uses: psf/black@stable
        with:
            src: . ${{ steps.stragglers.outputs.missed }}