Fix cmake builds with Python 3.12, which deleted the long-deprecated 'distutils' module (firebase#13583)

Author: dconeybe

cmake/external/nanopb.patch

@@ -1,15 +1,19 @@
 diff -Naur nanopb/CMakeLists.txt nanopb-fix/CMakeLists.txt
 --- nanopb/CMakeLists.txt	2021-03-22 08:50:07.000000000 -0400
 +++ nanopb-fix/CMakeLists.txt	2022-06-24 16:17:09.130783413 -0400
-@@ -41,7 +41,7 @@
+@@ -41,10 +41,10 @@
  if(nanopb_BUILD_GENERATOR)
      set(generator_protos nanopb plugin)
 
 -    find_package(PythonInterp 2.7 REQUIRED)
 +    find_package(PythonInterp 3.7 REQUIRED)
      execute_process(
          COMMAND ${PYTHON_EXECUTABLE} -c
-             "from distutils import sysconfig; print(sysconfig.get_python_lib(prefix=''))"
+-            "from distutils import sysconfig; print(sysconfig.get_python_lib(prefix=''))"
++            "import os.path, sys, sysconfig; print(os.path.relpath(sysconfig.get_path('purelib'), start=sys.prefix))"
+         OUTPUT_VARIABLE PYTHON_INSTDIR
+         OUTPUT_STRIP_TRAILING_WHITESPACE
+     )
 diff -Naur nanopb/generator/nanopb_generator.py nanopb-fix/generator/nanopb_generator.py
 --- nanopb/generator/nanopb_generator.py	2021-03-22 08:50:07.000000000 -0400
 +++ nanopb-fix/generator/nanopb_generator.py	2022-11-01 15:37:38.112297044 -0400