Try switching to using uv in GitHub Actions

For #89

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ on:
 jobs:
   test:
     name: "Python ${{ matrix.python-version }}, Django ${{ matrix.django-version}}"
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
 
     strategy:
       fail-fast: false
@@ -30,30 +30,18 @@ jobs:
       - name: Git clone
         uses: actions/checkout@v4
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+      - name: Install uv and set Python version
+        uses: astral-sh/setup-uv@v5
         with:
+          # enable-cache: true
+          # cache-dependency-glob: "uv.lock"
           python-version: ${{ matrix.python-version }}
 
-      - name: Get pip cache dir
-        id: pip-cache
-        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-
-      - name: Pip cache
-        uses: actions/cache@v4
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key: ${{ matrix.python-version }}-v2-${{ hashFiles('**/pyproject.toml') }}
-          restore-keys: |
-            ${{ matrix.python-version }}-v2-
-
-      - name: Install python packages
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade coverage[toml] tox tox-gh-actions
+      - name: Install dependencies
+        run: uv pip install --system tox tox-gh-actions tox-uv
 
       - name: Test with Tox
-        run: tox --verbose --parallel auto
+        run: tox --parallel auto
         env:
           DJANGO: ${{ matrix.django-version }}
 
@@ -63,42 +51,23 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
 
   ruff:
-    name: "Run ruff: ${{ matrix.toxenv }}"
+    name: Run ruff
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        toxenv:
-          - ruff
-
     steps:
       - name: Git clone
         uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - name: Install uv and set Python version
+        uses: astral-sh/setup-uv@v5
         with:
           python-version: "3.12"
 
-      - name: Get pip cache dir
-        id: pip-cache
-        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
-
-      - name: Pip cache
-        uses: actions/cache@v4
-        with:
-          path: ${{ steps.pip-cache.outputs.dir }}
-          key: ${{ matrix.python-version }}-v2-${{ hashFiles('**/pyproject.toml') }}
-          restore-keys: |
-            ${{ matrix.python-version }}-v2-
-
       - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install --upgrade tox tox-gh-actions
+        run: uv pip install --system ruff tox tox-gh-actions tox-uv
 
-      - name: Run ${{ matrix.toxenv }}
-        run: python -m tox -e ${{ matrix.toxenv }}
+      - name: Run ruff
+        run: tox -e ruff
 
   slack:
     # https://github.com/8398a7/action-slack/issues/72#issuecomment-649910353