Merge pull request #189 from pytest-dev/bump-tox

Bump tox

.github/workflows/main.yml

@@ -35,29 +35,52 @@ jobs:
             toxfactor: py312
             ignore-typecheck-outcome: true
             ignore-test-outcome: true
+
     steps:
     - uses: actions/checkout@v3
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
+      id: setup-python
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
+
+    - name: Install poetry
+      run: |
+        python -m pip install poetry==1.3.1
+
+    - name: Configure poetry
+      run: |
+        python -m poetry config virtualenvs.in-project true
+
+    - name: Cache the virtualenv
+      id: poetry-dependencies-cache
+      uses: actions/cache@v3
+      with:
+        path: ./.venv
+        key: ${{ runner.os }}-venv-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+
+    - name: Install dev dependencies
+      if: steps.poetry-dependencies-cache.outputs.cache-hit != 'true'
       run: |
-        python -m pip install --upgrade pip
-        pip install -U setuptools
-        pip install "tox~=4.0" coverage[toml]
+        python -m poetry install --only=dev
+
     - name: Type checking
       # Ignore errors for older pythons
       continue-on-error: ${{ matrix.ignore-typecheck-outcome }}
       run: |
+        source .venv/bin/activate
         tox -e mypy
+
     - name: Test with tox
       continue-on-error: ${{ matrix.ignore-test-outcome }}
       run: |
+        source .venv/bin/activate
         coverage erase
         tox run-parallel -f ${{ matrix.toxfactor }} --parallel-no-spinner --parallel-live
         coverage combine
         coverage xml
+
     - uses: codecov/codecov-action@v3
       with:
         fail_ci_if_error: true