fixes

Author: chadrik

src/python/CMakeLists.txt

@@ -22,18 +22,18 @@ set_source_files_properties(${python_srcs} PROPERTIES
 
 # choose aarch vs x86_64 based on the current platform
 if (CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")
-    set(_arch, "aarch64")
+    set(_arch "aarch64")
 else ()
-    set(_arch, "x86_64")
+    set(_arch "x86_64")
 endif ()
 
 # Note: this must be kept in sync with `[[tool.cibuildwheel.overrides]]` in pyproject.toml
-set (_python_build_id, "cp311-manylinux_${_arch}")
+set (_python_build_id "cp311-manylinux_${_arch}")
 
 add_custom_command (COMMAND cd ${CMAKE_SOURCE_DIR} &&
-                        cibuildwheel "." --output-dir "${CMAKE_BINARY_DIR}/wheelhouse" --only ${_python_build_id}
+                        cibuildwheel "." --output-dir "${CMAKE_BINARY_DIR}/wheelhouse" --only "${_python_build_id}"
                     OUTPUT "${CMAKE_BINARY_DIR}/wheelhouse/OpenImageIO/__init__.pyi"
-                    COMMENT "Generating python stubs"
+                    COMMENT "Generating python stubs (using ${_python_build_id})"
                     )
 
 add_custom_command (COMMAND ${CMAKE_COMMAND} -E copy