anchor.diff:  let
     py = python.override {
       packageOverrides = self: super: {
  -
  -      aws-sam-translator = super.aws-sam-translator.overridePythonAttrs (oldAttrs: rec {
  -        version = "1.14.0";
  +      flask = super.flask.overridePythonAttrs (oldAttrs: rec {
  +        version = "1.0.2";
           src = oldAttrs.src.override {
             inherit version;
  -          sha256 = "1cghn1m7ana9s8kyg61dwp9mrism5l04vy5rj1wnmksz8vzmnq9w";
  +          sha256 = "0j6f4a9rpfh25k1gp7azqhnni4mb4fgy50jammgjgddw1l3w0w92";
           };
         });
   
  
positive.code: 
  buildPythonApplication rec {
    pname = "aws-sam-cli";
    version = "0.22.0";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "1flbvqlj5llz7nrszmcf00v2a1pa36alv90r1l8lwn8zid5aabkn";
    };
  
    # Tests are not included in the PyPI package
  
negative.code:     requests
      serverlessrepo
      six
      tomlkit
    ];
  
    # fix over-restrictive version bounds
  