{
  lib,
  stdenv,
  nodejs_22,
  pnpm_9,
  bash,
  makeWrapper,
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "atbb";
  version = "0.1.0";

  src = lib.fileset.toSource {
    root = ../.;
    fileset = lib.fileset.unions [
      ../package.json
      ../pnpm-lock.yaml
      ../pnpm-workspace.yaml
      ../turbo.json
      ../tsconfig.base.json
      ../apps
      ../packages
    ];
  };

  pnpmDeps = pnpm_9.fetchDeps {
    inherit (finalAttrs) pname version src;
    fetcherVersion = 1;
    hash = "sha256-isHNzvG9rTAyH7PYI7U85RilJv73FNpXNwmPDq40sI0=";
  };

  nativeBuildInputs = [
    nodejs_22
    pnpm_9.configHook
    bash
    makeWrapper
  ];

  buildPhase = ''
    runHook preBuild
    pnpm build
    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall

    mkdir -p $out

    # Workspace config
    cp package.json pnpm-lock.yaml pnpm-workspace.yaml $out/

    # Root node_modules (pnpm virtual store — symlinks point into Nix store FOD)
    cp -r node_modules $out/

    # Each workspace package: package.json + dist/ + local node_modules symlinks
    for pkg in apps/appview apps/web packages/db packages/atproto packages/cli packages/lexicon packages/logger; do
      mkdir -p "$out/$pkg"
      cp "$pkg/package.json" "$out/$pkg/"
      [ -d "$pkg/dist" ] && cp -r "$pkg/dist" "$out/$pkg/"
      [ -d "$pkg/node_modules" ] && cp -r "$pkg/node_modules" "$out/$pkg/"
    done

    # DB schema source (needed by drizzle.config.ts which references ../../packages/db/src/schema.ts)
    cp -r packages/db/src $out/packages/db/

    # Drizzle migrations (needed for db:migrate at deploy time)
    cp -r apps/appview/drizzle $out/apps/appview/
    cp -r apps/appview/drizzle-sqlite $out/apps/appview/

    # Drizzle config files (needed by drizzle-kit migrate)
    cp apps/appview/drizzle.postgres.config.ts $out/apps/appview/
    cp apps/appview/drizzle.sqlite.config.ts $out/apps/appview/

    # Web static assets (CSS, favicon — served by hono serveStatic)
    cp -r apps/web/public $out/apps/web/

    # CLI wrapper — makes `atbb` available on PATH
    mkdir -p $out/bin
    makeWrapper ${nodejs_22}/bin/node $out/bin/atbb \
      --add-flags "$out/packages/cli/dist/index.js"

    runHook postInstall
  '';

  meta = with lib; {
    description = "atBB — decentralized BB-style forum on AT Protocol";
    license = licenses.agpl3Only;
    platforms = [ "x86_64-linux" "aarch64-linux" ];
  };
})