anchor.diff:      "prereleases_if_they_are_compatible"
       # requires git history to work correctly
       "default_with_excluded_data"
  +    # toml ordering has changed
  +    "lock"
     ];
   
     meta = with lib; {
  
positive.code:      --replace "requests-toolbelt = \"^0.8.0\"" "requests-toolbelt = \"^0.9.1\"" \
       --replace 'importlib-metadata = {version = "~1.1.3", python = "<3.8"}' \
         'importlib-metadata = {version = ">=1.3,<2", python = "<3.8"}' \
       --replace "tomlkit = \"^0.5.11\"" "tomlkit = \"^0.6.0\"" \
       --replace "cleo = \"^0.7.6\"" "cleo = \"^0.8.0\"" \
       --replace "version = \"^20.0.1\", python = \"^3.5\"" "version = \"^21.0.0\", python = \"^3.5\"" \
       --replace "clikit = \"^0.4.2\"" "clikit = \"^0.6.2\""
  
negative.code: { lib, buildPythonPackage, fetchFromGitHub, isPy27, pythonOlder, fetchpatch
  , cachecontrol
  , cachy
  , cleo
  