ci: Use setup-python v3/4's new caching system

Author: tony

.github/workflows/docs.yml

@@ -34,53 +34,23 @@ jobs:
         if: steps.changes.outputs.docs == 'true' || steps.changes.outputs.root_docs == 'true' || steps.changes.outputs.python_files == 'true'
         run: echo "PUBLISH=$(echo true)" >> $GITHUB_ENV
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v3
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Get full Python version
-        id: full-python-version
-        shell: bash
-        run: echo ::set-output name=version::$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))")
-
       - name: Install poetry
-        run: |
-          curl -O -sSL https://install.python-poetry.org/install-poetry.py
-          python install-poetry.py -y --version 1.1.14
-          echo "PATH=${HOME}/.poetry/bin:${PATH}" >> $GITHUB_ENV
-          rm install-poetry.py
+        run: pipx install "poetry==1.1.14"
 
-      - name: Add ~/.local/bin to PATH
-        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-      - name: Get poetry cache paths from config
-        run: |
-          echo "poetry_virtualenvs_path=$(poetry config --list | sed -n 's/.*virtualenvs.path = .* # //p' | sed -e 's/^\"//' -e 's/\"$//')" >> $GITHUB_ENV
-          echo "poetry_virtualenvs_path=$(poetry config --list | sed -n 's/.*virtualenvs.path = .* # //p' | sed -e 's/^\"//' -e 's/\"$//')" >> $GITHUB_ENV
-
-      - name: Configure poetry
-        shell: bash
-        run: poetry config virtualenvs.in-project true
-
-      - name: Set up cache
-        uses: actions/cache@v3
-        id: cache
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
         with:
-          path: |
-            .venv
-            {{ env.poetry_cache_dir }}
-            {{ env.poetry_virtualenvs_path }}
-          key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
-
-      - name: Ensure cache is healthy
-        if: steps.cache.outputs.cache-hit == 'true'
-        shell: bash
-        run: poetry run pip --version >/dev/null 2>&1 || rm -rf .venv
+          python-version: ${{ matrix.python-version }}
+          cache: 'poetry'
 
       - name: Install dependencies [w/ docs]
         run: poetry install --extras "docs lint"
 
+      - name: Print python versions
+        run: |
+          python -V
+          poetry run python -V
+
       - name: Build documentation
         run: |
           pushd docs; make SPHINXBUILD='poetry run sphinx-build' html; popd

.github/workflows/tests.yml

@@ -12,53 +12,24 @@ jobs:
         python-version: ["3.9", "3.10"]
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v3
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Get full Python version
-        id: full-python-version
-        shell: bash
-        run: echo ::set-output name=version::$(python -c "import sys; print('-'.join(str(v) for v in sys.version_info))")
 
       - name: Install poetry
-        run: |
-          curl -O -sSL https://install.python-poetry.org/install-poetry.py
-          python install-poetry.py -y --version 1.1.14
-          echo "PATH=${HOME}/.poetry/bin:${PATH}" >> $GITHUB_ENV
-          rm install-poetry.py
-
-      - name: Add ~/.local/bin to PATH
-        run: echo "$HOME/.local/bin" >> $GITHUB_PATH
-
-      - name: Get poetry cache paths from config
-        run: |
-          echo "poetry_virtualenvs_path=$(poetry config --list | sed -n 's/.*virtualenvs.path = .* # //p' | sed -e 's/^\"//' -e 's/\"$//')" >> $GITHUB_ENV
-          echo "poetry_virtualenvs_path=$(poetry config --list | sed -n 's/.*virtualenvs.path = .* # //p' | sed -e 's/^\"//' -e 's/\"$//')" >> $GITHUB_ENV
-
-      - name: Configure poetry
-        shell: bash
-        run: poetry config virtualenvs.in-project true
+        run: pipx install "poetry==1.1.14"
 
-      - name: Set up cache
-        uses: actions/cache@v3
-        id: cache
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
         with:
-          path: |
-            .venv
-            ${{ env.poetry_cache_dir }}
-            ${{ env.poetry_virtualenvs_path }}
-          key: venv-${{ runner.os }}-${{ steps.full-python-version.outputs.version }}-${{ hashFiles('**/poetry.lock') }}
-
-      - name: Ensure cache is healthy
-        if: steps.cache.outputs.cache-hit == 'true'
-        shell: bash
-        run: poetry run pip --version >/dev/null 2>&1 || rm -rf .venv
+          python-version: ${{ matrix.python-version }}
+          cache: 'poetry'
 
       - name: Install dependencies
         run: poetry install -E "docs test coverage lint format"
 
+      - name: Print python versions
+        run: |
+          python -V
+          poetry run python -V
+
       - name: Lint with flake8
         run: poetry run flake8