build-docs.yml

#
# This workflow rebuilds documentation and stores the resulting patch as a
# workflow artifact.  We can then download the artifact, apply the patch, and
# then push the changes.
#
# It's possible to do all this locally on a developer's machine, but it's not
# trivial, because it requires many pre-requisites.
#
name: Rebuild documentation
on: workflow_dispatch
jobs:
  docs:
    name: Rebuild documentation
    timeout-minutes: 180
    runs-on: ubuntu-20.04
    defaults:
      run:
        shell: bash

    steps:
      - uses: actions/checkout@v3
      - name: Setup up Python ${{ matrix.python }}
        uses: actions/setup-python@v4
        with:
          #
          # We use Py3.8 here for historical reasons.
          #
          python-version: "3.8"

      - name: Update pip
        run: python -m pip install -U pip

      - name: Install apt packages for LaTeX rendering
        run: |
          sudo apt-get -yq update
          sudo apt-get -yq remove texlive-binaries --purge
          sudo apt-get -yq --no-install-suggests --no-install-recommends --force-yes install dvipng texlive-latex-base texlive-latex-extra texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended latexmk
          sudo apt-get -yq install build-essential python3.8-dev
      - name: Install gensim and its dependencies
        run: pip install -e .[docs]

      - name: Build documentation
        run: |
          python setup.py build_ext --inplace
          make -C docs/src clean html

      - name: Check changes to prebuilt docs
        run: |
          git config user.email "noreply@github.com"
          git config user.name "Gensim Docs Build"
          if ! git diff --quiet @ ; then
            git add .
            branch="$GITHUB_HEAD_REF ($GITHUB_REF_NAME)"
            git commit -m "Import rebuilt documentation for branch $branch"
            git format-patch @^
            git bundle create prebuilt-docs-changes.bundle @^...@
            git reset --mixed @^
            git diff --exit-code --stat @
          fi

      - name: Upload prebuilt docs changes
        if: always()
        uses: actions/upload-artifact@v3
        with:
          name: prebuilt-docs-changes
          path: |
            *.patch
            *.bundle