anchor.diff:    pname = "slicedimage";
     version = "4.1.1";
   
  -  src = fetchPypi {
  -    inherit pname version;
  -    sha256 = "7369f1d7fa09f6c9969625c4b76a8a63d2507a94c6fc257183da1c10261703e9";
  +  src = fetchFromGitHub {
  +    owner = "spacetx";
  +    repo = pname;
  +    rev = version;
  +    sha256 = "1vpg8varvfx0nj6xscdfm7m118hzsfz7qfzn28r9rsfvrhr0dlcw";
     };
   
     propagatedBuildInputs = [
  
positive.code: { lib
  , buildPythonPackage
  , fetchPypi
  , boto3
  , diskcache
  , enum34
  
negative.code: , requests
  , scikitimage
  , six
  , pytestCheckHook
  , isPy27
  , tifffile
  }:
  