{...}: final: prev: {
  pytr = prev.pytr.overrideAttrs (old: {
    version = "0.4.5";
    src = prev.fetchFromGitHub {
      owner = "pytr-org";
      repo = "pytr";
      rev = "3cd0bb3b1301d89ff9c39de3cb34dc82c0c9af6d";
      hash = "sha256-UStDQaZecrpbL9+IApyV49gVQZrGI7eDURtgHZJazrk=";
    };
  });
}