pythonPackages.github3_py: cleanup

pkgs/development/python-modules/github3_py/default.nix

@@ -1,18 +1,19 @@
-{ stdenv
+{ lib
+, pythonOlder
 , buildPythonPackage
 , fetchPypi
-, unittest2
-, pytest
-, mock
 , betamax
+, pytest
 , betamax-matchers
-, dateutil
+, unittest2
+, mock
 , requests
-, pyopenssl
 , uritemplate
+, dateutil
+, jwcrypto
+, pyopenssl
 , ndg-httpsclient
 , pyasn1
-, jwcrypto
 }:
 
 buildPythonPackage rec {
@@ -24,18 +25,19 @@ buildPythonPackage rec {
     sha256 = "35fea5bf3567a8e88d3660686d83f96ef164e698ce6fb30f9e2b0edded7357af";
   };
 
-  buildInputs = [ unittest2 pytest mock betamax betamax-matchers dateutil ];
+  checkInputs = [ betamax pytest betamax-matchers ]
+    ++ lib.optional (pythonOlder "3") unittest2
+    ++ lib.optional (pythonOlder "3.3") mock;
   propagatedBuildInputs = [ requests uritemplate dateutil jwcrypto pyopenssl ndg-httpsclient pyasn1 ];
 
   postPatch = ''
-    sed -i -e 's/mock ==1.0.1/mock>=1.0.1/' setup.py
     sed -i -e 's/unittest2 ==0.5.1/unittest2>=0.5.1/' setup.py
   '';
 
   # TODO: only disable the tests that require network
   doCheck = false;
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     homepage = http://github3py.readthedocs.org/en/master/;
     description = "A wrapper for the GitHub API written in python";
     license = licenses.bsd3;