anchor.diff:      html5lib
       keyring
       lockfile
  +    packaging
       pexpect
       pkginfo
       poetry-core
  
positive.code: , intreehooks
  , keyring
  , lockfile
  , pexpect
  , pkginfo
  , poetry-core
  
negative.code: 
    postPatch = ''
      substituteInPlace pyproject.toml \
        --replace 'importlib-metadata = {version = "^1.6.0", python = "<3.8"}' \
         'importlib-metadata = {version = ">=1.6", python = "<3.8"}' \
        --replace 'version = "^21.2.0"' 'version = ">=21.2"' \
        --replace 'packaging = "^20.4"' 'packaging = "*"'
    '';
  
    nativeBuildInputs = [
  