ci: work on speeding up further (#5613)

* ci: work on speeding up further

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* chore: move uv's index-strategy to pyproject.toml

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

* Update .github/workflows/ci.yml

---------

Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>

.github/workflows/ci.yml

@@ -122,33 +122,28 @@ jobs:
       if: runner.os == 'macOS'
       run: brew install boost
 
-    - name: Update CMake
-      uses: jwlawson/actions-setup-cmake@v2.0
-
-    - name: Cache wheels
-      if: runner.os == 'macOS'
-      uses: actions/cache@v4
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
       with:
-        # This path is specific to macOS - we really only need it for PyPy NumPy wheels
-        # See https://github.com/actions/cache/blob/master/examples.md#python---pip
-        # for ways to do this more generally
-        path: ~/Library/Caches/pip
-        # Look to see if there is a cache hit for the corresponding requirements file
-        key: ${{ runner.os }}-pip-${{ matrix.python }}-x64-${{ hashFiles('tests/requirements.txt') }}
+        enable-cache: true
 
     - name: Prepare env
-      run: |
-        python -m pip install -r tests/requirements.txt
+      run: uv pip install --python=python --system -r tests/requirements.txt
 
     - name: Setup annotations on Linux
       if: runner.os == 'Linux'
-      run: python -m pip install pytest-github-actions-annotate-failures
+      run: uv pip install --python=python --system pytest-github-actions-annotate-failures
+
+    # TODO Resolve Windows Ninja shared object issue on Python 3.8+
+    - name: Use Ninja except on Windows
+      if: runner.os != 'Windows'
+      run: echo "CMAKE_GENERATOR=Ninja" >> "$GITHUB_ENV"
 
     # First build - C++11 mode and inplace
     # More-or-less randomly adding -DPYBIND11_SIMPLE_GIL_MANAGEMENT=ON here
     - name: Configure C++11 ${{ matrix.args }}
       run: >
-        cmake -S . -B .
+        cmake -S. -B.
         -DPYBIND11_WERROR=ON
         -DPYBIND11_DISABLE_HANDLE_TYPE_NAME_DEFAULT_IMPLEMENTATION=ON
         -DPYBIND11_SIMPLE_GIL_MANAGEMENT=ON
@@ -159,13 +154,13 @@ jobs:
         ${{ matrix.args }}
 
     - name: Build C++11
-      run: cmake --build . -j 2
+      run: cmake --build .
 
     - name: Python tests C++11
-      run: cmake --build . --target pytest -j 2
+      run: cmake --build . --target pytest
 
     - name: C++11 tests
-      run: cmake --build . --target cpptest -j 2
+      run: cmake --build . --target cpptest
 
     - name: Interface test C++11
       run: cmake --build . --target test_cmake_build
@@ -177,7 +172,7 @@ jobs:
     # More-or-less randomly adding -DPYBIND11_SIMPLE_GIL_MANAGEMENT=OFF here.
     - name: Configure C++17
       run: >
-        cmake -S . -B build2 -Werror=dev
+        cmake -S. -Bbuild2 -Werror=dev
         -DPYBIND11_WERROR=ON
         -DPYBIND11_SIMPLE_GIL_MANAGEMENT=OFF
         -DPYBIND11_PYTEST_ARGS=-v
@@ -187,7 +182,7 @@ jobs:
         ${{ matrix.args }}
 
     - name: Build
-      run: cmake --build build2 -j 2
+      run: cmake --build build2
 
     - name: Python tests
       run: cmake --build build2 --target pytest
@@ -202,7 +197,7 @@ jobs:
     # setuptools
     - name: Setuptools helpers test
       run: |
-        pip install setuptools
+        uv pip install --python=python --system setuptools
         pytest tests/extra_setuptools
       if: "!(matrix.runs-on == 'windows-2022')"
 
@@ -913,10 +908,7 @@ jobs:
         python-version: ${{ matrix.python }}
 
     - name: Prepare env
-      # Ensure use of NumPy 2 (via NumPy nightlies but can be changed soon)
-      run: |
-        python3 -m pip install -r tests/requirements.txt
-        python3 -m pip install 'numpy>=2.0.0b1' 'scipy>=1.13.0rc1'
+      run: python3 -m pip install -r tests/requirements.txt
 
     - name: Update CMake
       uses: jwlawson/actions-setup-cmake@v2.0

.github/workflows/configure.yml

@@ -12,11 +12,6 @@ on:
 permissions:
   contents: read
 
-env:
-  PIP_BREAK_SYSTEM_PACKAGES: 1
-  # For cmake:
-  VERBOSE: 1
-
 jobs:
   # This tests various versions of CMake in various combinations, to make sure
   # the configure step passes.
@@ -28,10 +23,10 @@ jobs:
         - runs-on: ubuntu-22.04
           cmake: "3.15"
 
-        - runs-on: ubuntu-22.04
+        - runs-on: ubuntu-24.04
           cmake: "3.26"
 
-        - runs-on: ubuntu-22.04
+        - runs-on: ubuntu-24.04
           cmake: "3.29"
 
         - runs-on: macos-13
@@ -57,8 +52,11 @@ jobs:
       with:
         python-version: 3.11
 
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
+
     - name: Prepare env
-      run: python -m pip install -r tests/requirements.txt
+      run: uv pip install --python=python --system -r tests/requirements.txt
 
     # An action for adding a specific version of CMake:
     #   https://github.com/jwlawson/actions-setup-cmake
@@ -68,17 +66,9 @@ jobs:
         cmake-version: ${{ matrix.cmake }}
 
     # These steps use a directory with a space in it intentionally
-    - name: Make build directories
-      run: mkdir "build dir"
-
     - name: Configure
-      working-directory: build dir
       shell: bash
-      run: >
-        cmake ..
-        -DPYBIND11_WERROR=ON
-        -DDOWNLOAD_CATCH=ON
-        -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")
+      run: cmake -S. -B"build dir" -DPYBIND11_WERROR=ON -DDOWNLOAD_CATCH=ON
 
     # Only build and test if this was manually triggered in the GitHub UI
     - name: Build

.github/workflows/pip.yml

@@ -15,10 +15,6 @@ on:
 permissions:
   contents: read
 
-env:
-  PIP_BREAK_SYSTEM_PACKAGES: 1
-  PIP_ONLY_BINARY: numpy
-
 jobs:
   # This builds the sdists and wheels and makes sure the files are exactly as
   # expected.
@@ -34,9 +30,11 @@ jobs:
       with:
         python-version: 3.8
 
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
+
     - name: Prepare env
-      run: |
-        python -m pip install -r tests/requirements.txt
+      run: uv pip install --system -r tests/requirements.txt
 
     - name: Python Packaging tests
       run: pytest tests/extra_python_package/
@@ -56,17 +54,19 @@ jobs:
       with:
         python-version: 3.8
 
+    - name: Install uv
+      uses: astral-sh/setup-uv@v5
+
     - name: Prepare env
-      run: |
-        python -m pip install -r tests/requirements.txt build twine
+      run: uv pip install --system -r tests/requirements.txt twine
 
     - name: Python Packaging tests
       run: pytest tests/extra_python_package/
 
     - name: Build SDist and wheels
       run: |
-        python -m build
-        PYBIND11_GLOBAL_SDIST=1 python -m build
+        uv build
+        PYBIND11_GLOBAL_SDIST=1 uv build
 
     - name: Check metadata
       run: twine check dist/*
@@ -103,7 +103,7 @@ jobs:
     - uses: actions/download-artifact@v4
 
     - name: Generate artifact attestation for sdist and wheel
-      uses: actions/attest-build-provenance@c074443f1aee8d4aeeae555aebba3282517141b2 # v2.2.3
+      uses: actions/attest-build-provenance@v2
       with:
         subject-path: "*/pybind11*"
 
@@ -111,10 +111,8 @@ jobs:
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
         packages-dir: standard/
-        attestations: true
 
     - name: Publish global package
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
         packages-dir: global/
-        attestations: true