anchor.diff:  
   buildPythonPackage rec {
     pname = "nipype";
  -  version = "1.3.1";
  +  version = "1.4.2";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "bb190964b568d64b04b73d2aa7eae31061fdbc3051d8c27bb34b1632db07ec71";
  +    sha256 = "1nr0z0k4xx1vswkp03g1lf8141mr4j2fbwd7wmpay4vz46qcp786";
     };
   
     postPatch = ''
       substituteInPlace nipype/interfaces/base/tests/test_core.py \
         --replace "/usr/bin/env bash" "${bash}/bin/bash"
     '';
  +
  +  nativeBuildInputs = [
  +    sphinx
  +  ];
   
     propagatedBuildInputs = [
       click
  
positive.code:   doCheck = !stdenv.isDarwin;
    # ignore tests which incorrect fail to detect xvfb
    checkPhase = ''
      LC_ALL="en_US.UTF-8" pytest -v nipype -k 'not display'
    '';
  
    meta = with stdenv.lib; {
      homepage = "https://nipy.org/nipype/";
      description = "Neuroimaging in Python: Pipelines and Interfaces";
      license = licenses.bsd3;
      maintainers = with maintainers; [ ashgillman ];
      # tests hang, blocking reviews of other packages
      broken = isPy38;
    };
  }
  
negative.code: , xvfbwrapper
  , pytestcov
  , codecov
  , sphinx
  # other dependencies
  , which
  , bash
  