Downgrade macOS x86-64 support from Tier 1 to Tier 4

.github/workflows/main.yml

@@ -63,7 +63,6 @@ jobs:
         rust: [stable]
         python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
         platform: [
-          { os: "macos-15-intel", python-architecture: "x64", rust-target: "x86_64-apple-darwin" },
           { os: "macOS-14", python-architecture: "arm64", rust-target: "aarch64-apple-darwin" },
           { os: "ubuntu-latest", python-architecture: "x64", rust-target: "x86_64-unknown-linux-gnu" },
           { os: "ubuntu-24.04-arm", python-architecture: "arm64", rust-target: "aarch64-unknown-linux-gnu" },

.github/workflows/wheels.yml

@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-15-intel, macos-14, ubuntu-24.04-arm]
+        os: [ubuntu-latest, windows-latest, macos-14, ubuntu-24.04-arm]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -70,6 +70,48 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           packages-dir: deploy
+  build_macos_intel_wheels:
+    name: Build macOS Intel wheels
+    runs-on: macos-14
+    environment: release
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        name: Install Python
+        with:
+          python-version: '3.12'
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: x86_64-apple-darwin
+      - name: Install cibuildwheel
+        run: |
+          python -m pip install -U --group releaseinfra
+      - name: Build wheels
+        run: |
+          python -m cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_ARCHS_MACOS: x86_64
+          CIBW_TEST_SKIP: "*"
+      - uses: actions/upload-artifact@v4
+        with:
+          path: ./wheelhouse/*.whl
+          name: wheel-builds-macos-intel
+  upload_macos_intel_wheels:
+    name: Upload macOS Intel wheels
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      id-token: write
+    needs: ["build_macos_intel_wheels", "upload_shared_wheels"]
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: wheel-builds-macos-intel
+          path: wheelhouse
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: wheelhouse/
   build_wheels_ppc64le:
     name: Build wheels on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}

docs/source/install.rst

@@ -77,6 +77,22 @@ source.
      - aarch64
      - :ref:`tier-1`
      - Distributions compatible with the `manylinux 2014`_ packaging specification
+   * - macOS (11 or newer)
+     - arm64
+     - :ref:`tier-1`
+     -
+   * - Windows 64bit
+     - x86_64
+     - :ref:`tier-1`
+     -
+   * - Linux (musl)
+     - x86_64
+     - :ref:`tier-2`
+     -
+   * - Linux (musl)
+     - aarch64
+     - :ref:`tier-2`
+     -
    * - Linux
      - i686 
      - :ref:`tier-4`
@@ -89,26 +105,10 @@ source.
      - s390x
      - :ref:`tier-4`
      - Distributions compatible with the `manylinux 2014`_ packaging specification
-   * - Linux (musl)
-     - x86_64
-     - :ref:`tier-2`
-     -
-   * - Linux (musl)
-     - aarch64
-     - :ref:`tier-2`
-     - 
    * - macOS (10.12 or newer)
      - x86_64
-     - :ref:`tier-1`
-     -
-   * - macOS (11 or newer)
-     - arm64
-     - :ref:`tier-1`
-     -
-   * - Windows 64bit
-     - x86_64
-     - :ref:`tier-1`
-     -
+     - :ref:`tier-4`
+     - Wheels are cross-compiled on arm64 and are not tested
    * - Windows 32bit 
      - i686 or x86_64
      - :ref:`tier-4`

releasenotes/notes/macos-intel-tier-4-7bd1859fc94a623e.yaml

@@ -0,0 +1,5 @@
+upgrade:
+  - |
+    Support for macOS x86_64 has been downgraded from tier 1 to tier 4. Wheels
+    will continue to be published, but they will be cross-compiled on arm64
+    and will not be tested.