python3Packages.funcsigs: disable tests, avoid unittest2

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

@@ -1,5 +1,5 @@
 { lib, buildPythonPackage, fetchPypi
-, isPyPy, isPy3k, unittest2
+, isPyPy, isPy3k
 }:
 
 buildPythonPackage rec {
@@ -11,11 +11,14 @@ buildPythonPackage rec {
     sha256 = "0l4g5818ffyfmfs1a924811azhjj8ax9xd1cffr1mzd3ycn0zfx7";
   };
 
-  buildInputs = [ unittest2 ];
-
   # https://github.com/testing-cabal/funcsigs/issues/10
   patches = lib.optional (isPyPy && isPy3k) [ ./fix-pypy3-tests.patch ];
 
+  # requires, unittest2 and package hasn't been maintained since 2013
+  doCheck = false;
+
+  pythonImportsCheck = [ "funcsigs" ];
+
   meta = with lib; {
     description = "Python function signatures from PEP362 for Python 2.6, 2.7 and 3.2+";
     homepage = "https://github.com/aliles/funcsigs";