anchor.diff:  , cython
   , python
   , sympy
  +, meshio
  +, mpi4py
  +, psutil
  +, openssh
  +, pythonOlder
   }:
   
   buildPythonPackage rec {
  -  name = "sfepy_${version}";
  -  version = "2019.4";
  +  name = "sfepy";
  +  version = "2020.4";
  +  disabled = pythonOlder "3.8";
   
     src = fetchurl {
       url="https://github.com/sfepy/sfepy/archive/release_${version}.tar.gz";
  -    sha256 = "1l9vgcw09l6bwhgfzlbn68fzpvns25r6nkd1pcp7hz5165hs6zzn";
  +    sha256 = "1wb0ik6kjg3mksxin0abr88bhsly67fpg36qjdzabhj0xn7j1yaz";
     };
   
     propagatedBuildInputs = [
  
positive.code:     pyparsing
      tables
      sympy
    ];
  
    postPatch = ''
      # broken test
      rm tests/test_homogenization_perfusion.py
      rm tests/test_splinebox.py
  
      # slow tests
      rm tests/test_input_*.py
  
negative.code:   '';
  
    checkPhase = ''
      export OMPI_MCA_plm_rsh_agent=${openssh}/bin/ssh
      export HOME=$TMPDIR
      mv sfepy sfepy.hidden
      mkdir -p $HOME/.matplotlib
  