Port ivy

src/python/pants/ivy/BUILD

@@ -3,6 +3,7 @@
 
 python_library(
   dependencies = [
+    '3rdparty/python:future',
     '3rdparty/python/twitter/commons:twitter.common.collections',
     '3rdparty/python:six',
     'src/python/pants/base:build_environment',

src/python/pants/ivy/bootstrapper.py

@@ -8,6 +8,7 @@
 import logging
 import os
 import shutil
+from builtins import map, object
 
 from pants.base.build_environment import get_buildroot
 from pants.ivy.ivy import Ivy

src/python/pants/ivy/ivy.py

@@ -5,6 +5,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 import os.path
+from builtins import object
 from contextlib import contextmanager
 
 from six import string_types