{
  lib,
  stdenv,
  fetchurl,
  nodejs,
  makeWrapper,
}:

let
  version = "0.0.85";

  freebuffSrc = fetchurl {
    url = "https://registry.npmjs.org/freebuff/-/freebuff-${version}.tgz";
    hash = "sha256-1x593yLMkoFIO5O+k5NKeEpi729VhINQlW1xFbYGnXM=";
  };

  pkgTar = fetchurl {
    url = "https://registry.npmjs.org/tar/-/tar-7.5.15.tgz";
    hash = "sha256-hl60jJtM1W2THQyGZj8G72GEG8QvVrHvNnr7EU1liBw=";
  };

  pkgFsMinipass = fetchurl {
    url = "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz";
    hash = "sha256-esKG48zMHqiYDnniA53va7l9MYLheVHNkJTwQA7ZgjY=";
  };

  pkgChownr = fetchurl {
    url = "https://registry.npmjs.org/chownr/-/chownr-3.0.0.tgz";
    hash = "sha256-TCT12qYwFCJS2oneZV998JDqR5RQqIJYl3UdeDIbE2A=";
  };

  pkgMinipass = fetchurl {
    url = "https://registry.npmjs.org/minipass/-/minipass-7.1.3.tgz";
    hash = "sha256-UqxhvnQ3VeP9yY5WAIbQ1KHix/02Qzh3kts44yLSfRI=";
  };

  pkgMinizlib = fetchurl {
    url = "https://registry.npmjs.org/minizlib/-/minizlib-3.1.0.tgz";
    hash = "sha256-mb8uKWGBct1x8GVHN0kMaPcbx+I3nUc+OPn+8tvs4uM=";
  };

  pkgYallist = fetchurl {
    url = "https://registry.npmjs.org/yallist/-/yallist-5.0.0.tgz";
    hash = "sha256-fJ1D26t8qzsxM7Dmpa8UAUSCKFMWs57J9QjvrdnrzpU=";
  };

in

stdenv.mkDerivation rec {
  pname = "freebuff";
  version = "0.0.85";

  src = freebuffSrc;

  nativeBuildInputs = [ makeWrapper ];

  installPhase = ''
    runHook preInstall

    mkdir -p "$out/lib/node_modules/freebuff"
    cp -r * "$out/lib/node_modules/freebuff/"

    # Extract npm dependencies from pre-fetched tarballs
    extractNpmPkg() {
      local src="$1" target="$2"
      mkdir -p "$target"
      tar xzf "$src" -C "$target" --strip-components=1
    }

    extractNpmPkg "${pkgTar}" "$out/lib/node_modules/tar"
    extractNpmPkg "${pkgChownr}" "$out/lib/node_modules/chownr"
    extractNpmPkg "${pkgMinipass}" "$out/lib/node_modules/minipass"
    extractNpmPkg "${pkgMinizlib}" "$out/lib/node_modules/minizlib"
    extractNpmPkg "${pkgYallist}" "$out/lib/node_modules/yallist"
    mkdir -p "$out/lib/node_modules/@isaacs"
    extractNpmPkg "${pkgFsMinipass}" "$out/lib/node_modules/@isaacs/fs-minipass"

    mkdir -p "$out/bin"
    makeWrapper "${nodejs}/bin/node" "$out/bin/freebuff" \
      --set NODE_PATH "$out/lib/node_modules" \
      --add-flags "$out/lib/node_modules/freebuff/index.js"

    runHook postInstall
  '';

  doCheck = false;

  passthru = {
    category = "AI Coding Agents";
    updateScript = [
      "nix-update"
      "--flake"
      ".#freebuff"
    ];
  };

  meta = with lib; {
    description = "The world's strongest free coding agent";
    homepage = "https://codebuff.com";
    license = licenses.mit;
    mainProgram = "freebuff";
    platforms = platforms.all;
  };
}