Step 2 in putting the MacOS toolbox modules in a package: issue a DepracationWarning in the compatibility modules.
diff --git a/Mac/Lib/lib-compat/Fonts.py b/Mac/Lib/lib-compat/Fonts.py
index f0a9a52..08ace63 100644
--- a/Mac/Lib/lib-compat/Fonts.py
+++ b/Mac/Lib/lib-compat/Fonts.py
@@ -1 +1,4 @@
+import warnings
+warnings.warn("The %s module is deprecated; use Carbon.%s"%(__name__, __name__),
+	DeprecationWarning, stacklevel=2)
 from Carbon.Fonts import *