anchor.diff:  
       # https://github.com/NixOS/nixpkgs/issues/16144#issuecomment-225422439
       export HOME=$TMP
  -
  -    AWS_TEST_COMMAND=$out/bin/aws python scripts/ci/run-tests
     '';
   
     postInstall = ''
  
positive.code: { lib, python3, groff, less, fetchFromGitHub, fetchpatch }:
  let
    py = python3.override {
      packageOverrides = self: super: {
        awscrt = super.awscrt.overridePythonAttrs (oldAttrs: rec {
          version = "0.11.24";
          src = self.fetchPypi {
            inherit (oldAttrs) pname;
            inherit version;
            sha256 = "sha256-uKpovKQEvwCFvgVw7/W1QtAffo48D5sIWav+XgcBYv8=";
          };
        });
        botocore = super.botocore.overridePythonAttrs (oldAttrs: rec {
          version = "2.0.0dev148";
          src = fetchFromGitHub {
            owner = "boto";
            repo = "botocore";
            rev = "c0734f100f61bbef413cb04d9890bbffbccd230f";
            sha256 = "sha256-ndSJdBF3NMNtpyHgYAksCUBDqlwPhugTkIK6Nby20oI=";
          };
          propagatedBuildInputs = super.botocore.propagatedBuildInputs ++ [py.pkgs.awscrt];
        });
  
negative.code:       --replace "distro>=1.5.0,<1.6.0" "distro"
    '';
  
    checkInputs = [ jsonschema mock pytestCheckHook pytest-xdist ];
  
    propagatedBuildInputs = [
      awscrt
  