Changing MSVC to clang-cl on win (XI)

Author: FrancescAlted

.github/workflows/build.yml

@@ -50,8 +50,9 @@ jobs:
       id: build_windows
       run: pip install -e .[test]
       env:
-        CMAKE_ARGS: "-G Ninja -DCMAKE_C_COMPILER=clang-cl -DCMAKE_CXX_COMPILER=clang-cl"
-        SKBUILD_CMAKE_ARGS: "-G Ninja -DCMAKE_C_COMPILER=clang-cl -DCMAKE_CXX_COMPILER=clang-cl"
+        CMAKE_GENERATOR: Ninja
+        CMAKE_C_COMPILER: clang-cl
+        CMAKE_CXX_COMPILER: clang-cl
         CC: clang-cl
         CXX: clang-cl
       continue-on-error: true

.github/workflows/cibuildwheels.yml

@@ -17,8 +17,8 @@ env:
   # Skip PyPy wheels for now (numexpr needs some adjustments first)
   # musllinux takes too long to build, and it's not worth it for now
   CIBW_SKIP: "pp* *musllinux* *-win32"
-  # Use CMAKE_ARGS/SKBUILD_CMAKE_ARGS so scikit-build-core forwards generator/compiler reliably on Windows.
-  CIBW_ENVIRONMENT_WINDOWS: "PATH=C:\\Program Files\\LLVM\\bin;%PATH% CC=clang-cl CXX=clang-cl CMAKE_ARGS=\"-G Ninja -DCMAKE_C_COMPILER=clang-cl -DCMAKE_CXX_COMPILER=clang-cl\" SKBUILD_CMAKE_ARGS=\"-G Ninja -DCMAKE_C_COMPILER=clang-cl -DCMAKE_CXX_COMPILER=clang-cl\""
+  # Use explicit generator/compiler env vars; CMAKE_ARGS with spaces is not split on Windows.
+  CIBW_ENVIRONMENT_WINDOWS: "PATH=C:\\Program Files\\LLVM\\bin;%PATH% CC=clang-cl CXX=clang-cl CMAKE_GENERATOR=Ninja CMAKE_C_COMPILER=clang-cl CMAKE_CXX_COMPILER=clang-cl"
 
 jobs: