Move all optional dependencies into setup.py

Author: dstufft

setup.py

@@ -1,8 +1,10 @@
-from distutils.core import setup
 import ast
 import os
 import codecs
 
+from setuptools import setup
+
+
 classifiers=[
     'Development Status :: 5 - Production/Stable',
     'Intended Audience :: Developers',
@@ -55,4 +57,13 @@
       install_requires=[
           'six',
       ],
+      extras_require={
+          ":python_version == '2.6'": ["ordereddict"],
+          "lxml:python_implementation == 'CPython'": ["lxml"],
+          "genshi": ["genshi"],
+          "datrie": ["datrie"],
+          "charade": ["charade"],
+          "all": ["genshi", "datrie", "charade"],
+          "all:python_implementation == 'CPython'": ["lxml"],
+      },
       )