{ pkgs }:
{
  ponytail = pkgs.fetchFromGitHub {
    owner = "DietrichGebert";
    repo = "ponytail";
    rev = "356918eba965ee1eac64bd3a7f0dd02108350de5";
    hash = "sha256-LPNMyHsri3+eeDmphEAKL1JgoRE4dLIPfZ4XZ+xu5UY=";
  };
  herdr = pkgs.llm-agents.herdr.src;
}