Xieby1's Nix/NixOS Config

{ pkgs, ... }:
{
  # ponytail has zero npm dependencies; Pi discovers extensions via the
  # `pi.extensions`/`pi.skills` fields in the root package.json, so the
  # raw source tree is sufficient — no npm build needed.
  home.file.".pi/agent/extensions/ponytail".source = pkgs.applyPatches {
    name = "ponytail";
    src = pkgs.npinsed.ai.pi.ponytail;
    postPatch = ''
      substituteInPlace package.json \
        --replace-fail '"./pi-extension/index.js"' '"./index.js"'
      echo 'export { default } from "./pi-extension/index.js";' > index.js
    '';
  };
  yq-merge.".pi/agent/settings.json" = {
    generator = builtins.toJSON;
    expr = {
      skills = [ "~/.pi/agent/extensions/ponytail/skills" ];
    };
  };

  # ponytail has no config for the status-line style, only to hide it. Written
  # writable via yq-merge so `/ponytail <mode>` can still persist defaultMode.
  yq-merge.".config/ponytail/config.json" = {
    generator = builtins.toJSON;
    expr = {
      hideStatus = true;
    };
  };
}