Merge remote-tracking branch 'origin/master'

* origin/master:
  GA actions cache of full env (90->30s) (#26)

.github/workflows/tests.yml

@@ -11,23 +11,37 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-      - name: Checkout code
+      - name: Check out the code
         uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
           python-version: '3.12'
-          cache: 'pip'
-
-      - name: Install dependencies
+
+      - name: Cache virtual environment
+        uses: actions/cache@v3
+        id: cache-venv
+        with:
+          path: venv
+          key: ${{ runner.os }}-venv-${{ hashFiles('requirements*.txt') }}
+          restore-keys: ${{ runner.os }}-venv-
+
+      - name: Install dependencies (only if no cache hit)
+        if: steps.cache-venv.outputs.cache-hit != 'true'
         run: |
+          python -m venv venv
+          . venv/bin/activate
           python -m pip install --upgrade pip
           pip install -r requirements.txt -r requirements-dev.txt
 
       - name: Run tests
-        run: pytest -vvrP test.py
+        run: |
+          . venv/bin/activate
+          pytest -vvrP test.py
 
       - name: Run performance tests
         if: contains(github.event.head_commit.message, '[perf]')
-        run: python test_performance.py
+        run: |
+          . venv/bin/activate
+          python test_performance.py