Find the PythonLibs first.

This is technically the wrong order, but we need to do the "wrong
order" because otherwise FindPythonInterp will look for the system
Python, which may not be present.

Author: Hoikas

scripts/test_ports/vcpkg-ci-python3/project/CMakeLists.txt

@@ -12,10 +12,10 @@ endif()
 
 # The purpose of this test is to ensure that we get the expected values
 # from the finders, not crosscompiling. So, let's not even go there.
+find_package(PythonLibs REQUIRED)
 if(NOT CMAKE_CROSSCOMPILING)
     find_package(PythonInterp REQUIRED)
 endif()
-find_package(PythonLibs REQUIRED)
 
 # The old find modules should NOT be prefixed.
 if(DEFINED PYTHON_MEOW_LIBRARIES OR DEFINED PYTHON_MEOW_EXECUTABLE)