diff -rupN --no-dereference Python-3.10.9/setup.py Python-3.10.9-new/setup.py
--- Python-3.10.9/setup.py	2022-12-08 09:36:55.413024773 +0100
+++ Python-3.10.9-new/setup.py	2022-12-08 09:36:58.217024836 +0100
@@ -560,6 +560,8 @@ class PyBuildExt(build_ext):
             print("Failed to build these modules:")
             print_three_column(failed)
             print()
+            with open('mods_failed.txt', 'w') as fh:
+                fh.write(", ".join(failed) + "\n")
 
         if self.failed_on_import:
             failed = self.failed_on_import[:]