anchor.diff:      # The top directory /build matches black's DEFAULT_EXCLUDE regex.
       # Make /build the project root for black tests to avoid excluding files.
       touch ../.git
  +  '' + lib.optionalString stdenv.isDarwin ''
  +    # Work around https://github.com/psf/black/issues/2105
  +    export TMPDIR="/tmp"
     '';
   
     disabledTests = [
  
positive.code: , appdirs
  , attrs
  , click
  , dataclasses
  , mypy-extensions
  , pathspec
  
negative.code: , regex
  , toml
  , typed-ast
  , typing-extensions
  , uvloop
  }:
  
  
  buildPythonPackage rec {
    pname = "black";
    version = "21.6b0";
  
    disabled = pythonOlder "3.6";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "016f6bhnnnbcrrh3cvmpk77ww0nykv5n1qvgf8b3044dm14264yw";
    };
  
    nativeBuildInputs = [ setuptools-scm ];
  