pythongh-152433: Windows: enable mmapmodule for UWP (python#152473)

Author: thexai

Misc/NEWS.d/next/Windows/2026-06-29-16-29-50.gh-issue-152433._nhCjt.rst

@@ -0,0 +1,2 @@
+Restores the ``mmap`` module when CPython is built from source for specific
+Windows API sets.

Modules/mmapmodule.c

@@ -338,7 +338,7 @@ _PyErr_SetFromNTSTATUS(ULONG status)
 }
 #endif
 
-#if defined(MS_WINDOWS) && !defined(DONT_USE_SEH)
+#if defined(MS_WINDOWS_DESKTOP) && !defined(DONT_USE_SEH)
 #define HANDLE_INVALID_MEM(sourcecode)                                     \
 do {                                                                       \
     EXCEPTION_RECORD record;                                               \
@@ -364,7 +364,7 @@ do {                                                                       \
 } while (0)
 #endif
 
-#if defined(MS_WINDOWS) && !defined(DONT_USE_SEH)
+#if defined(MS_WINDOWS_DESKTOP) && !defined(DONT_USE_SEH)
 #define HANDLE_INVALID_MEM_METHOD(self, sourcecode)                           \
 do {                                                                          \
     EXCEPTION_RECORD record;                                                  \

PC/config.c

@@ -140,7 +140,7 @@ struct _inittab _PyImport_Inittab[] = {
     {"itertools", PyInit_itertools},
     {"_collections", PyInit__collections},
     {"_symtable", PyInit__symtable},
-#if defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_GAMES)
+#if defined(MS_WINDOWS_DESKTOP) || defined(MS_WINDOWS_GAMES) || defined(MS_WINDOWS_APP)
     {"mmap", PyInit_mmap},
 #endif
     {"_csv", PyInit__csv},