Mac does support createfilehandler now (Jack)
diff --git a/Modules/_tkinter.c b/Modules/_tkinter.c
index 19ed4f8..593b057 100644
--- a/Modules/_tkinter.c
+++ b/Modules/_tkinter.c
@@ -68,7 +68,7 @@
 	#error "Tk 4.0 or 3.x are not supported -- use 4.1 or higher"
 #endif
 
-#if TKMAJORMINOR < 8000 || !defined(MS_WINDOWS) && !defined(macintosh)
+#if TKMAJORMINOR < 8000 || !defined(MS_WINDOWS)
 #define HAVE_CREATEFILEHANDLER
 #endif