another try on making windows build work

Author: behrisch

.github/workflows/cibuildwheel.yml

@@ -127,12 +127,13 @@ jobs:
         uses: pypa/cibuildwheel@v3.3.0
         env:
           CIBW_ENVIRONMENT_LINUX: "CCACHE_DIR=/host/home/runner/work/sumo/sumo/.ccache"
-          CIBW_ENVIRONMENT_WINDOWS: "CMAKE_GENERATOR=Ninja CMAKE_ARGS=-DPython_EXECUTABLE={python}"
+          CIBW_ENVIRONMENT_WINDOWS: "CMAKE_GENERATOR=Ninja SKBUILD_CMAKE_ARGS=-DPython_EXECUTABLE={python}"
           CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
           CIBW_MANYLINUX_AARCH64_IMAGE: ${{ matrix.manylinux }}
           CIBW_PROJECT_REQUIRES_PYTHON: ">=3.9"
           # CIBW_REPAIR_WHEEL_COMMAND_MACOS: ""  # disable repair process to inspect the wheel
           # CIBW_BUILD_VERBOSITY: 2
+          CMAKE_ARGS: "-DPython_EXECUTABLE={python}"
           MACOSX_DEPLOYMENT_TARGET: '14.0'
 
       - uses: actions/upload-artifact@v6

CMakeLists.txt

@@ -221,7 +221,11 @@ if (${CMAKE_VERSION} VERSION_LESS 3.12.0)
     # define variable for compatibility
     set(Python_EXECUTABLE ${PYTHON_EXECUTABLE} CACHE FILEPATH "Python executable")
 else()
-    find_package(Python REQUIRED COMPONENTS Interpreter)
+    # we search for Interpreter _and_ Development to make sure the versions match
+    find_package(Python COMPONENTS Interpreter Development)
+    if (NOT Python_FOUND)
+        message(FATAL_ERROR "Python NOT found")
+    endif()
 endif()
 message(STATUS "Found Python: " ${Python_EXECUTABLE})
 if (${CMAKE_VERSION} VERSION_LESS 3.15.0 AND (ENABLE_PYTHON_BINDINGS OR ENABLE_JAVA_BINDINGS OR ENABLE_CS_BINDINGS))

src/libsumo/CMakeLists.txt

@@ -157,8 +157,7 @@ if (SWIG_FOUND)
     endif(ENABLE_CS_BINDINGS)
 
     if (ENABLE_PYTHON_BINDINGS)
-        find_package(Python COMPONENTS Development.Module)
-        if (Python_Development.Module_FOUND)
+        if (Python_Development.FOUND OR Python_Development.Module_FOUND)  # the latter exists only since CMake 3.18
             set(CMAKE_SWIG_FLAGS -keyword) # is necessary for using keyword args
             # other options which should be evaluated: -builtin, -modern, -extranative
             if (FOX_FOUND)

src/libtraci/CMakeLists.txt

@@ -129,8 +129,7 @@ if (SWIG_FOUND)
     endif()
 
     if (ENABLE_PYTHON_BINDINGS)
-        find_package(Python COMPONENTS Development.Module)
-        if (Python_Development.Module_FOUND)
+        if (Python_Development.FOUND OR Python_Development.Module_FOUND)  # the latter exists only since CMake 3.18
             set(CMAKE_SWIG_FLAGS "-keyword") # is necessary for using keyword args
             # other options which should be evaluated: -builtin, -modern, -extranative
             set(SWIG_OUTFILE_DIR ${CMAKE_CURRENT_BINARY_DIR})