More python 3.x fixes:

setup.py

@@ -14,6 +14,10 @@ try:
 except ImportError:
     from distutils.core import setup
 try:
+    from distutils.util import Mixin2to3
+    from lib2to3.refactor import get_fixers_from_package
+    Mixin2to3.fixer_names = [f for f in get_fixers_from_package('lib2to3.fixes')
+                             if f != 'lib2to3.fixes.fix_next']
     from distutils.command.build_py import build_py_2to3 \
         as build_py
     from distutils.command.build_scripts import build_scripts_2to3 \

theano/gof/cc.py

@@ -13,8 +13,13 @@ from itertools import izip
 
 import numpy
 
+if sys.version_info[:2] >= (3, 0):
+    import hashlib
+
+    def hash_from_code(msg):
+        return hashlib.md5(msg.encode()).hexdigest()
 
-if sys.version_info[:2] >= (2, 5):
+elif sys.version_info[:2] >= (2, 5):
     import hashlib
 
     def hash_from_code(msg):

theano/gof/cmodule.py

@@ -13,7 +13,7 @@ import subprocess
 import sys
 import tempfile
 import time
-from six import b
+from six import b, next
 
 import distutils.sysconfig
 
@@ -918,7 +918,7 @@ class ModuleCache(object):
                     # If we do, then there is no need to even compile it.
                     duplicated_module = False
                     # The first compilation step is to yield the source code.
-                    src_code = compile_steps.next()
+                    src_code = next(compile_steps)
                     module_hash = get_module_hash(src_code, key)
 
                     # The op has c_code, so take the lock.
@@ -973,7 +973,7 @@ class ModuleCache(object):
                             try:
                                 # The module should be returned by the last
                                 # step of the compilation.
-                                module = compile_steps.next()
+                                module = next(compile_steps)
                             except StopIteration:
                                 break