anchor.diff:  
   python3.pkgs.buildPythonApplication rec {
     pname = "sqlfluff";
  -  version = "0.8.2";
  -  disabled = python3.pythonOlder "3.6";
  +  version = "0.9.0";
   
     src = fetchFromGitHub {
       owner = pname;
       repo = pname;
       rev = version;
  -    sha256 = "sha256-0FlXHUjoeZ7XfmOSlY30b13i2t/4vyWwhDKXquXKaJE=";
  +    hash = "sha256-AxK5pRuNkhJokuuv/5/ZJxZ2J9d6XLFPZJWQfq9baaU=";
     };
   
     propagatedBuildInputs = with python3.pkgs; [
       appdirs
       cached-property
  +    chardet
       click
       colorama
       configparser
  
positive.code:     oyaml
      pathspec
      pytest
      tblib
      toml
      tqdm
      typing-extensions
    ] ++ lib.optionals (pythonOlder "3.7") [
      dataclasses
    ];
  
    checkInputs = with python3.pkgs; [
  
negative.code:     "test__rules__std_file_dbt"
    ];
  
    pythonImportsCheck = [
      "sqlfluff"
    ];
  
    meta = with lib; {
      description = "SQL linter and auto-formatter";
  