Index: ToscaWidgets-0.9.8/tw/core/command.py
===================================================================
--- ToscaWidgets-0.9.8.orig/tw/core/command.py
+++ ToscaWidgets-0.9.8/tw/core/command.py
@@ -6,7 +6,10 @@ import sys
 import os
 import tempfile
 import subprocess
-import md5
+try:
+        from hashlib import md5 as hash_constructor
+except ImportError:
+        from md5 import new as hash_constructor
 import mimetypes
 
 try:
@@ -547,7 +550,7 @@ class aggregate_tw_resources(Command):
             # this must result in an existing variant_filename
             resource_aggregator.flush()
             inf = open(variant_filename)
-            hash = md5.new()
+            hash = hash_constructor()
             while True:
                 block = inf.read(4096)
                 if not block: