Issue #17654: Ensure IDLE menus are customized properly on OS X for
non-framework builds and for all variants of Tk.
diff --git a/Lib/idlelib/keybindingDialog.py b/Lib/idlelib/keybindingDialog.py
index 5339f88..58d7ed5 100644
--- a/Lib/idlelib/keybindingDialog.py
+++ b/Lib/idlelib/keybindingDialog.py
@@ -4,6 +4,7 @@
 from Tkinter import *
 import tkMessageBox
 import string
+import sys
 
 class GetKeysDialog(Toplevel):
     def __init__(self,parent,title,action,currentKeySequences):
@@ -132,8 +133,7 @@
         order is also important: key binding equality depends on it, so
         config-keys.def must use the same ordering.
         """
-        from idlelib import macosxSupport
-        if macosxSupport.runningAsOSXApp():
+        if sys.platform == "darwin":
             self.modifiers = ['Shift', 'Control', 'Option', 'Command']
         else:
             self.modifiers = ['Control', 'Alt', 'Shift']