anchor.diff:    doCheck = true;
   
     checkInputs = [
  -   unixtools.script
      pytest
      coverage
      flake8
  
positive.code:    toml
    ];
  
    # tests fails if stdin is not a tty
    checkPhase = "echo | script -c 'pytest ./test/test.py'";
  
    pythonImportsCheck = [ "yq" ];
  
  
negative.code: , flake8
  , jq
  , pytest
  , toml
  }:
  
  