name: Check documentation build

on:
  workflow_dispatch:
  push:
    branches: [main, master, 'release*']
    tags: ['*']
  pull_request:
    paths:
    - 'docs/**'
    # We now have a docs check that fails if any error codes don't have documentation,
    # so it's important to do the docs build on all PRs touching mypy/errorcodes.py
    # in case somebody's adding a new error code without any docs
    - 'mypy/errorcodes.py'
    # Part of the documentation is automatically generated from the options
    # definitions in mypy/main.py
    - 'mypy/main.py'
    - 'mypyc/doc/**'
    - '**/*.rst'
    - '**/*.md'
    - CREDITS
    - LICENSE

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  docs:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    env:
      TOXENV: docs
      TOX_SKIP_MISSING_INTERPRETERS: False
      VERIFY_MYPY_ERROR_CODES: 1
    steps:
      - uses: actions/checkout@v4
        with:
          persist-credentials: false
      - uses: actions/setup-python@v5
        with:
          python-version: '3.12'
      - name: Install tox
        run: pip install tox==4.26.0
      - name: Setup tox environment
        run: tox run -e ${{ env.TOXENV }} --notest
      - name: Test
        run: tox run -e ${{ env.TOXENV }} --skip-pkg-install