anchor.diff:    };
   in
   with python3'.pkgs; buildPythonApplication rec {
  -  version = "4.5";
  +  version = "4.6";
     pname = "buku";
   
     src = fetchFromGitHub {
       owner = "jarun";
       repo = "buku";
       rev = "v${version}";
  -    sha256 = "1lcq5fk8d5j2kfhn9m5l2hk46v7nj4vfa22m1psz35c9zpw4px8q";
  +    sha256 = "sha256-hr9qiP7SbloigDcs+6KVWu0SOlggMaBr7CCfY8zoJG0=";
     };
   
     checkInputs = [
       pytestcov
       hypothesis
       pytest
  +    pytest-vcr
       pylint
       flake8
       pyyaml
  
positive.code:     homepage = "https://github.com/jarun/Buku";
      license = licenses.gpl3;
      platforms = platforms.unix;
      maintainers = with maintainers; [ matthiasbeyer infinisil ];
    };
  }
  
  
negative.code:     # Disables a test which requires internet
      substituteInPlace tests/test_bukuDb.py \
        --replace "@pytest.mark.slowtest" "@unittest.skip('skipping')" \
        --replace "self.assertEqual(shorturl, \"http://tny.im/yt\")" "" \
        --replace "self.assertEqual(url, \"https://www.google.com\")" ""
      substituteInPlace setup.py \
        --replace mypy-extensions==0.4.1 mypy-extensions>=0.4.1
    '';
  