Modern manylinux

Author: pythonspeed

.github/workflows/build.yml

@@ -56,7 +56,7 @@ jobs:
           fetch-depth: 0
 
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.20.0
+        uses: pypa/cibuildwheel@v2.21.3
         with:
           output-dir: wheelhouse
         env:
@@ -70,6 +70,11 @@ jobs:
           CIBW_ARCHS_MACOS: "x86_64 universal2 arm64"
           # Skip testing arm64 builds on Intel Macs.
           CIBW_TEST_SKIP: "*-macosx_arm64 *-macosx_universal2:arm64"
+          # Use newer manylinux so we get newer gcc and can take advantage of
+          # speed boost from x86-64-v2, at the cost of not supporting some old
+          # patch releases of Python 3.9 if they haven't updated pip in their
+          # virtualenv.
+          CIBW_MANYLINUX_X86_64_IMAGE: "manylinux_2_28"
       - uses: actions/upload-artifact@v3
         name: Upload artifacts
         with: