gnu: Add python-configobj.

* gnu/packages/python.scm (python-configobj, python2-configobj): New
  variables.
* gnu/packages/patches/python-configobj-setuptools.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.

gnu-system.am

@@ -660,6 +660,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/python-disable-ssl-test.patch		\
   gnu/packages/patches/python-fix-tests.patch			\
   gnu/packages/patches/python2-rdflib-drop-sparqlwrapper.patch	\
+  gnu/packages/patches/python-configobj-setuptools.patch	\
   gnu/packages/patches/python2-pygobject-2-gi-info-type-error-domain.patch \
   gnu/packages/patches/qemu-CVE-2015-6855.patch			\
   gnu/packages/patches/qt4-ldflags.patch			\

gnu/packages/patches/python-configobj-setuptools.patch

@@ -0,0 +1,30 @@
+From 16fbc38f13e435b4e3e1a37d706e64e05bad4691 Mon Sep 17 00:00:00 2001
+From: Leo Famulari <leo@famulari.name>
+Date: Tue, 10 Nov 2015 23:09:24 -0500
+Subject: [PATCH] patch build to use setuptools
+
+---
+ setup.py | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index c6d57a6..27bf260 100644
+--- a/setup.py
++++ b/setup.py
+@@ -12,7 +12,12 @@
+ # http://opensource.org/licenses/BSD-3-Clause
+ import os
+ import sys
+-from distutils.core import setup
++
++try:
++    from setuptools import setup
++except ImportError:
++    from distutils.core import setup
++
+ # a simple import wouldn't work if we moved towards a package with __init__
+ from _version import __version__
+ 
+-- 
+2.6.2
+

gnu/packages/python.scm

@@ -6396,3 +6396,33 @@ (define-public python-werkzeug
 
 (define-public python2-werkzeug
   (package-with-python2 python-werkzeug))
+
+(define-public python-configobj
+  (package
+    (name "python-configobj")
+    (version "5.0.6")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://pypi.python.org/packages/source/c/configobj/"
+                    "configobj-" version ".tar.gz"))
+              (sha256
+               (base32
+                "00h9rcmws03xvdlfni11yb60bz3kxfvsj6dg6nrpzj71f03nbxd2"))
+              ;; Patch setup.py so it looks for python-setuptools, which is
+              ;; required to parse the keyword 'install_requires' in setup.py.
+              (patches (list (search-patch "python-configobj-setuptools.patch")))))
+    (build-system python-build-system)
+    (native-inputs
+     `(("python-setuptools" ,python-setuptools)
+       ("python-six" ,python-six)))
+    (synopsis "Config file reading, writing and validation")
+    (description "ConfigObj is a simple but powerful config file reader and
+writer: an ini file round tripper.  Its main feature is that it is very easy to
+use, with a straightforward programmer’s interface and a simple syntax for
+config files.")
+    (home-page "https://github.com/DiffSK/configobj")
+    (license bsd-3)))
+
+(define-public python2-configobj
+  (package-with-python2 python-configobj))