anchor.diff:    src = fetchFromGitHub {
       owner = "NCAR";
       repo = "wrf-python";
  -    rev = version;
  -    hash = "sha256-+v4FEK0FVE0oAIb18XDTOInHKfxXyykb1ngk9Uxwf0c=";
  +    rev = "refs/tags/v${version}";
  +    hash = "sha256-4iIs/M9fzGJsnKCDSl09OTUoh7j6REBXuutE5uXFe3k=";
     };
   
  +  nativeBuildInputs = [
  +    gfortran
  +  ];
  +
     propagatedBuildInputs = [
  -    wrapt
  +    basemap
       numpy
       setuptools
       xarray
  -  ];
  -
  -  nativeBuildInputs = [
  -    gfortran
  +    wrapt
     ];
   
     checkInputs = [
  
positive.code: , fetchFromGitHub
  , pythonOlder
  , buildPythonPackage
  , gfortran
  , xarray
  , wrapt
  , numpy
  , netcdf4
  , setuptools
  }:
  
  buildPythonPackage rec {
    pname = "wrf-python";
    version = "1.3.3";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  
negative.code:   checkPhase = ''
      runHook preCheck
      cd ./test/ci_tests
      ${python.interpreter} utests.py
      runHook postCheck
    '';
  
  