moved imports to make possible to import check_md5sum into networkcache.py file.

src/zc/buildout/download.py

@@ -17,7 +17,6 @@ try:
     from hashlib import md5
 except ImportError:
     from md5 import new as md5
-from zc.buildout.easy_install import realpath
 import logging
 import os
 import os.path
@@ -40,10 +39,6 @@ class ChecksumError(zc.buildout.UserError):
 url_opener = URLOpener()
 
 
-from zc.buildout.networkcache import download_network_cached, \
-                                     upload_network_cached
-
-
 class Download(object):
     """Configurable download utility.
 
@@ -183,7 +178,7 @@ class Download(object):
         try:
             try:
                 if not download_network_cached(self.network_cache, tmp_path,
-                                                            url, self.logger):
+                                                     url, self.logger, md5sum):
 
                     # Download from original url
                     tmp_path, headers = urllib.urlretrieve(url, tmp_path)
@@ -258,6 +253,9 @@ def remove(path):
     if os.path.exists(path):
         os.remove(path)
 
+from zc.buildout.networkcache import download_network_cached, \
+                                     upload_network_cached
+from zc.buildout.easy_install import realpath
 
 def locate_at(source, dest):
     if dest is None or realpath(dest) == realpath(source):