fix(ci): avoid duplicate py3-none release builds

Author: abetlen

.github/workflows/build-and-release.yaml

@@ -11,7 +11,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-22.04, windows-2022, macos-14, macos-15]
+        # Use explicit Apple Silicon and Intel macOS runners so each job
+        # produces a distinct wheel artifact.
+        os: [ubuntu-22.04, windows-2022, macos-15, macos-15-intel]
 
     steps:
       - uses: actions/checkout@v4
@@ -82,7 +84,9 @@ jobs:
           # Keep native arm64 builds on a portable CPU baseline instead of
           # tuning wheels to the hosted runner.
           CIBW_ENVIRONMENT: CMAKE_ARGS="-DGGML_NATIVE=off"
-          CIBW_BUILD: "cp38-* cp39-* cp310-* cp311-* cp312-*"
+          # wheel.py-api = "py3" means one aarch64 build covers every supported
+          # CPython version, so building more just duplicates the artifact name.
+          CIBW_BUILD: "cp38-*"
         with:
           output-dir: wheelhouse
 
@@ -93,27 +97,8 @@ jobs:
           path: ./wheelhouse/*.whl
 
   build_wheels_riscv64:
-    name: Build riscv64 wheels (${{ matrix.shard.name }})
+    name: Build riscv64 wheels
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        shard:
-          - name: cp310
-            build: "cp310-*"
-            artifact: wheels_riscv64_cp310
-          - name: cp311
-            build: "cp311-*"
-            artifact: wheels_riscv64_cp311
-          - name: cp312
-            build: "cp312-*"
-            artifact: wheels_riscv64_cp312
-          - name: cp313
-            build: "cp313-*"
-            artifact: wheels_riscv64_cp313
-          - name: cp314
-            build: "cp314-*"
-            artifact: wheels_riscv64_cp314
     steps:
       - uses: actions/checkout@v4
         with:
@@ -133,16 +118,16 @@ jobs:
           # Build riscv64 wheels against a conservative baseline instead of
           # enabling RVV-related extensions from the build container.
           CIBW_ENVIRONMENT: CMAKE_ARGS="-DGGML_NATIVE=off -DGGML_RVV=off -DGGML_RV_ZFH=off -DGGML_RV_ZVFH=off -DGGML_RV_ZICBOP=off -DGGML_RV_ZIHINTPAUSE=off"
-          # Split the emulated riscv64 build into one Python version per job
-          # to minimize wall-clock time without changing the release artifacts.
-          CIBW_BUILD: ${{ matrix.shard.build }}
+          # wheel.py-api = "py3" means one riscv64 build covers every supported
+          # CPython version, so sharding by interpreter only duplicates assets.
+          CIBW_BUILD: "cp310-*"
         with:
           output-dir: wheelhouse
 
       - name: Upload wheels as artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: ${{ matrix.shard.artifact }}
+          name: wheels_riscv64
           path: ./wheelhouse/*.whl
 
   build_sdist:

.github/workflows/build-wheels-cuda.yaml

@@ -21,7 +21,9 @@ jobs:
         run: |
           $matrix = @{
               'os' = @('ubuntu-22.04') #, 'windows-2022')
-              'pyver' = @("3.9", "3.10", "3.11", "3.12")
+              # wheel.py-api = "py3" makes the CUDA wheel interpreter-agnostic,
+              # so one builder per toolkit version is sufficient.
+              'pyver' = @("3.9")
               'cuda' = @("12.1.1", "12.2.2", "12.3.2", "12.4.1") #, "12.5.1", "12.6.1")
               'releasetag' = @("basic")
           }

.github/workflows/build-wheels-metal.yaml

@@ -7,11 +7,8 @@ permissions:
 
 jobs:
   build_wheels:
-    name: Build wheels on ${{ matrix.os }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [macos-14, macos-15]
+    name: Build wheels on macos-15
+    runs-on: macos-15
 
     steps:
       - uses: actions/checkout@v4
@@ -38,14 +35,16 @@ jobs:
           CIBW_REPAIR_WHEEL_COMMAND: ""
           CIBW_ARCHS: "arm64"
           CIBW_ENVIRONMENT: CMAKE_ARGS="-DCMAKE_OSX_ARCHITECTURES=arm64 -DCMAKE_APPLE_SILICON_PROCESSOR=arm64 -DGGML_METAL=on -DCMAKE_CROSSCOMPILING=ON"
-          CIBW_BUILD: "cp39-* cp310-* cp311-* cp312-*"
+          # wheel.py-api = "py3" means one Metal wheel covers every supported
+          # CPython version, so extra selectors only repeat the same artifact.
+          CIBW_BUILD: "cp39-*"
         with:
           package-dir: .
           output-dir: wheelhouse2
 
       - uses: actions/upload-artifact@v4
         with:
-          name: wheels-mac_${{ matrix.os }}
+          name: wheels-mac
           path: ./wheelhouse2/*.whl
 
   release: