Use setup-uv github action in CI

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        uv-resolution: ['highest', 'lowest']
+        uv-resolution: ['highest', 'lowest-direct']
         # The minimum version should be represented in pyproject.toml.
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [ubuntu-latest, windows-latest]
@@ -26,51 +26,33 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: "Set up Python"
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: "Install uv"
-        run: "pip install --upgrade uv"
 
-      - name: "Create virtual environment"
-        id: venv
-        run: |
-          if [ "${{ matrix.os }}" = "windows-latest" ]; then
-            uv venv C:/Users/runner/.venv
-            echo "activate=C:/Users/runner/.venv/Scripts/Activate.ps1" >> "$GITHUB_OUTPUT"
-          else
-            uv venv /home/runner/.venv
-            echo "activate=source /home/runner/.venv/bin/activate" >> "$GITHUB_OUTPUT"
-          fi
-        shell: bash
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+        with:
+          enable-cache: true
+          cache-dependency-glob: '**/pyproject.toml'
 
       - name: "Install dependencies"
         run: |
-          ${{ steps.venv.outputs.activate }}
-          # We want the latest dev requirements, but the lowest install requirements.
-          uv pip install --upgrade --editable .[dev]
-          uv pip install --resolution=${{ matrix.uv-resolution }} --upgrade --editable .
+          uv sync --python=${{ matrix.python-version }} --all-extras --resolution=${{ matrix.uv-resolution }}
 
       - name: "Lint"
         run: |
-          ${{ steps.venv.outputs.activate }}
-          mypy .
-          ruff check .
-          ruff format --check .
-          pip-extra-reqs pip_check_reqs
-          pip-missing-reqs pip_check_reqs
-          pylint pip_check_reqs tests
-          pyroma --min=10 .
-          pyproject-fmt --check .
-          pyright .
-          actionlint
+          uv run mypy .
+          uv run ruff check .
+          uv run ruff format --check .
+          uv run pip-extra-reqs pip_check_reqs
+          uv run pip-missing-reqs pip_check_reqs
+          uv run pylint pip_check_reqs tests
+          uv run pyroma --min=10 .
+          uv run pyproject-fmt --check .
+          uv run pyright .
+          uv run actionlint
 
       - name: "Run tests"
         run: |
-          ${{ steps.venv.outputs.activate }}
-          pytest -s -vvv --cov-fail-under 100 --cov=pip_check_reqs/ --cov=tests tests/ --cov-report=xml
+          uv run pytest -s -vvv --cov-fail-under 100 --cov=pip_check_reqs/ --cov=tests tests/ --cov-report=xml
 
   completion-ci:
     needs: build