setup now have 2to3 sequence that functionality depend on distribute package.

setup.py

@@ -9,6 +9,7 @@
 #*****************************************************************************
 
 import os
+import sys
 import glob
 
 # BEFORE importing distutils, remove MANIFEST. distutils doesn't properly
@@ -16,7 +17,24 @@ import glob
 if os.path.exists('MANIFEST'): os.remove('MANIFEST')
 #
 
-from distutils.core import setup
+extra = {}
+_distribute = False
+
+try:
+    import setuptools
+    setup = setuptools.setup
+    _distribute = getattr(setuptools, '_distribute', False)
+except ImportError:
+    from distutils.core import setup
+
+if sys.version_info >= (3, 0):
+    if _distribute == False:
+        raise RuntimeError('You must installed `distribute` to setup pyreadline with Python3')
+
+    extra.update(
+        use_2to3=True
+    )
+
 exec(compile(open('pyreadline/release.py').read(), 'pyreadline/release.py', 'exec'))
 
 try:
@@ -50,5 +68,6 @@ setup(name=name,
       package_data     = {'pyreadline':['configuration/*']},
       data_files       = [],
       cmdclass = cmd_class,
+      **extra
       )