anchor.diff:      mock
     ];
   
  +  preConfigure = ''
  +      export CUDA_PATH=${cudatoolkit}
  +  ''; 
  +
     propagatedBuildInputs = [
       cudatoolkit
       cudnn
  
positive.code:     fastrlock
      numpy
      six
      wheel
    ];
  
    # In python3, test was failed...
    doCheck = !isPy3k;
  
    meta = with stdenv.lib; {
      description = "A NumPy-compatible matrix library accelerated by CUDA";
  
negative.code: { stdenv, buildPythonPackage
  , fetchPypi, isPy3k, linuxPackages
  , fastrlock, numpy, six, wheel, pytest, mock, setuptools
  , cudatoolkit, cudnn, nccl
  }:
  
  