👷 use uv venv in ci, add python 3.12 to testing matrix

.github/workflows/ci.yml

@@ -22,15 +22,16 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10']
-    env:
-      UV_CACHE_DIR: /tmp/.uv-cache
-      UV_SYSTEM_PYTHON: true
+        python-version: ['3.10', '3.12']
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v2
         with:
-          python-version: ${{ matrix.python-version }}
+          enable-cache: true
+          cache-dependency-glob: |
+            uv.lock
+            pyproject.toml
       - name: Install pnpm
         uses: pnpm/action-setup@v4
         with:
@@ -41,26 +42,19 @@ jobs:
           cache: 'pnpm'
       - name: Install system-level dependencies
         run: sudo apt-get update && sudo apt-get install python3-dev libmagic-dev libmagickwand-dev poppler-utils libpoppler-cpp-dev
-      - name: uv cache
-        uses: actions/cache@v4
-        with:
-          path: /tmp/.uv-cache
-          key: uv-${{ runner.os }}-${{ hashFiles('requirements-dev.txt') }}
-          restore-keys: |
-            uv-${{ runner.os }}-${{ hashFiles('requirements-dev.txt') }}
-            uv-${{ runner.os }}
+      - name: Setup venv
+        run: |
+          uv venv --python ${{ matrix.python-version }}
+          source .venv/bin/activate
+          echo PATH=$PATH >> $GITHUB_ENV
       - name: Install dependencies
         run: |
-          python -m pip install uv
-          uv pip install ".[test]"
+          uv sync --extra test --frozen
+          uv pip install -e . --no-deps
           pnpm install
       - name: Build frontend
         run: pnpm run build
       - name: Run tests
         run: |
           coverage run --branch -m pytest -m "not slow"
           coverage report --format=markdown >> $GITHUB_STEP_SUMMARY
-      - name: Show coverage report
-        run: coverage report
-      - name: Minimize uv cache
-        run: uv cache prune --ci