{
  pkgs,
  ...
}:
# hipEngine >= 0.5.0 requires llguidance >= 1.8,<2; nixpkgs only provides
# 1.7.x. Override nixpkgs' llguidance to 1.8.0 and hand the resulting
# interpreter/package set to the package.
let
  python = pkgs.python3.override {
    packageOverrides = self: super: {
      llguidance = super.llguidance.overridePythonAttrs (old: rec {
        version = "1.8.0";
        src = pkgs.fetchFromGitHub {
          owner = "guidance-ai";
          repo = "llguidance";
          tag = "v${version}";
          hash = "sha256-/rHTefKTq5ch38NqbcLYTXBJwkW+WzG5OFvignDIie4=";
        };
        cargoDeps = pkgs.rustPlatform.fetchCargoVendor {
          pname = "llguidance";
          inherit src version;
          hash = "sha256-aa9R+6xgFVGAD3snHbkPRF5jMYwC3DFNjXcUtaOzDbU=";
        };
      });
    };
  };
in
python.pkgs.callPackage ./package.nix {
  python3Packages = python.pkgs;
}