anchor.diff:  { lib
  +, stdenv
   , buildPythonPackage
   , fetchFromGitHub
   , pythonOlder
  
positive.code: , matplotlib
  , numpy
  , snuggs
  
  # tests
  , hypothesis
  
negative.code:     "-m 'not network'"
    ];
  
    disabledTests = lib.optionals stdenv.isDarwin [
      "test_reproject_error_propagation"
    ];
  
    pythonImportsCheck = [
      "rasterio"
    ];
  
    doInstallCheck = true;
    installCheckPhase = ''
      $out/bin/rio --version | grep ${version} > /dev/null
    '';
  
    meta = with lib; {
      description = "Python package to read and write geospatial raster data";
  