anchor.diff:  , gmsh
   , python
   , stdenv
  +, openssh
  +, fetchurl
   }:
   
   let
  
positive.code: in
    buildPythonPackage rec {
      pname = "fipy";
      version = "3.3";
  
      src = fetchPypi {
        pname = "FiPy";
        inherit version;
        sha256 = "11agpg3d6yrns8igkpml1mxy3mkqkjq2yrw1mw12y07dkk12ii19";
      };
  
      propagatedBuildInputs = [
  
negative.code:       mpi4py
        future
        scikit-fmm
        openssh
      ] ++ lib.optionals isPy27 [ pysparse ] ++ not_darwin_inputs;
  
      checkInputs = not_darwin_inputs;
  
      checkPhase = ''
        export OMPI_MCA_plm_rsh_agent=${openssh}/bin/ssh
        ${python.interpreter} setup.py test --modules
      '';
  
  