Replaced addpack by handcrafted code to find the bgen stuff.
diff --git a/Mac/Modules/help/helpscan.py b/Mac/Modules/help/helpscan.py
index 3b1db65..da95e85 100644
--- a/Mac/Modules/help/helpscan.py
+++ b/Mac/Modules/help/helpscan.py
@@ -1,7 +1,9 @@
# Scan an Apple header file, generating a Python file of generator calls.
-import addpack
-addpack.addpack(':tools:bgen:bgen')
+import sys
+import os
+BGENDIR=os.path.join(sys.prefix, ':Tools:bgen:bgen')
+sys.path.append(BGENDIR)
from scantools import Scanner
from bgenlocations import TOOLBOXDIR