anchor.diff:      xvfbwrapper
     ] ++ stdenv.lib.optional (!isPy3k) [
       configparser
  +    futures
     ];
   
  -  checkInputs = [ pytest mock pytestcov codecov which glibcLocales ];
  +  checkInputs = [ pytest mock pytestcov pytest_xdist pytest-forked codecov which glibcLocales ];
   
     checkPhase = ''
       LC_ALL="en_US.UTF-8" py.test -v --doctest-modules nipype
  
positive.code: , psutil
  , pydot
  , pytest
  , scipy
  , simplejson
  , traits
  
negative.code:     dateutil
      funcsigs
      future
      networkx
      nibabel
      numpy
  