ci(python): Use uv for installing Python dependencies in CI

.github/workflows/benchmark.yml

@@ -41,12 +41,14 @@ jobs:
 
       - name: Create virtual environment
         run: |
-          python -m venv .venv
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv venv
           echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
 
       - name: Install Python dependencies
         working-directory: py-polars
-        run: pip install -r requirements-dev.txt
+        run: uv pip install --compile-bytecode -r requirements-dev.txt
 
       - name: Set up Rust
         run: rustup show

.github/workflows/docs-global.yml

@@ -63,13 +63,15 @@ jobs:
 
       - name: Create virtual environment
         run: |
-          python -m venv .venv
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv venv
           echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
 
-      - name: Install dependencies
+      - name: Install Python dependencies
         run: |
-          pip install -r py-polars/requirements-dev.txt
-          pip install -r docs/requirements.txt
+          uv pip install -r py-polars/requirements-dev.txt
+          uv pip install -r docs/requirements.txt
 
       - name: Set up Rust
         run: rustup show

.github/workflows/docs-python.yml

@@ -32,17 +32,21 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.12'
-          cache: pip
-          cache-dependency-path: py-polars/docs/requirements-docs.txt
+
+      - name: Create virtual environment
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv venv
+          echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
 
       - name: Install Python dependencies
         working-directory: py-polars/docs
-        run: pip install -r requirements-docs.txt
+        run: uv pip install -r requirements-docs.txt
 
       - name: Build Python documentation
         working-directory: py-polars/docs
         env:
-          SPHINXOPTS: -W --jobs=auto
           POLARS_VERSION: ${{ github.event.client_payload.tag || 'main' }}
         run: make html
 

.github/workflows/lint-python.yml

@@ -40,9 +40,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.8', '3.12']
-    defaults:
-      run:
-        working-directory: py-polars
 
     steps:
       - uses: actions/checkout@v4
@@ -52,11 +49,20 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install dependencies
+      - name: Create virtual environment
         run: |
-          pip install -r requirements-dev.txt
-          pip install -r requirements-lint.txt
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv venv
+          echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
+
+      - name: Install Python dependencies
+        working-directory: py-polars
+        run: |
+          uv pip install -r requirements-dev.txt
+          uv pip install -r requirements-lint.txt
 
       # Allow untyped calls for older Python versions
       - name: Run mypy
+        working-directory: py-polars
         run: mypy ${{ (matrix.python-version == '3.8') && '--allow-untyped-calls' || '' }}

.github/workflows/codecov.yml → .github/workflows/test-coverage.yml

@@ -84,15 +84,18 @@ jobs:
 
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       - name: Create virtual environment
         run: |
-          python -m venv .venv
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv venv
           echo "$GITHUB_WORKSPACE/.venv/bin" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/.venv" >> $GITHUB_ENV
 
-      - name: Install dependencies
-        run: pip install -r py-polars/requirements-dev.txt
+      - name: Install Python dependencies
+        working-directory: py-polars
+        run: uv pip install --compile-bytecode -r requirements-dev.txt
 
       - name: Set up Rust
         run: rustup component add llvm-tools-preview

.github/workflows/test-python.yml

@@ -60,9 +60,12 @@ jobs:
         run: |
           python -m venv .venv
           echo "$GITHUB_WORKSPACE/py-polars/.venv/$BIN" >> $GITHUB_PATH
+          echo "VIRTUAL_ENV=$GITHUB_WORKSPACE/py-polars/.venv" >> $GITHUB_ENV
 
-      - name: Install dependencies
-        run: pip install -r requirements-dev.txt
+      - name: Install Python dependencies
+        run: |
+          pip install uv
+          uv pip install --compile-bytecode -r requirements-dev.txt
 
       - name: Set up Rust
         run: rustup show

Makefile

@@ -21,7 +21,7 @@ FILTER_PIP_WARNINGS=| grep -v "don't match your environment"; test $${PIPESTATUS
 requirements: .venv  ## Install/refresh Python project requirements
 	@unset CONDA_PREFIX \
 	&& $(VENV_BIN)/python -m pip install --upgrade uv \
-	&& $(VENV_BIN)/uv pip install --upgrade -r py-polars/requirements-dev.txt \
+	&& $(VENV_BIN)/uv pip install --upgrade --compile-bytecode -r py-polars/requirements-dev.txt \
 	&& $(VENV_BIN)/uv pip install --upgrade -r py-polars/requirements-lint.txt \
 	&& $(VENV_BIN)/uv pip install --upgrade -r py-polars/docs/requirements-docs.txt \
 	&& $(VENV_BIN)/uv pip install --upgrade -r docs/requirements.txt

py-polars/requirements-dev.txt

@@ -9,6 +9,7 @@
 maturin
 # extra dependency for maturin (linux-only)
 patchelf; platform_system == 'Linux'
+pip
 
 # ------------
 # DEPENDENCIES