{
  lib,
  stdenvNoCC,
  nodejs_24,
  pnpm_11,
  pnpmConfigHook,
  fetchPnpmDeps,
  makeWrapper,
}:
let
  nodejs = nodejs_24;
  pnpm = pnpm_11;

  packageJson = lib.importJSON ./package.json;
in
stdenvNoCC.mkDerivation (finalAttrs: {
  pname = "streamplace-bot";
  inherit (packageJson) version;

  src = lib.fileset.toSource {
    root = ./.;
    fileset = lib.fileset.unions [
      ./package.json
      ./pnpm-lock.yaml
      ./src
    ];
  };

  # Shared with frontend.nix: both derivations read the same pnpm-lock.yaml
  pnpmDeps = fetchPnpmDeps {
    inherit (finalAttrs) pname version src;
    inherit pnpm;
    fetcherVersion = 4;
    hash = "sha256-PB77S4CYjNJlRP84LhNhHGO5BSdIhRPF1aULMahAN/8=";
  };

  nativeBuildInputs = [
    pnpm
    nodejs
    pnpmConfigHook
    makeWrapper
  ];

  # pnpmConfigHook already populates ./node_modules during configurePhase;
  # there's no build step since bot.ts is executed directly.
  dontBuild = true;

  installPhase = ''
    runHook preInstall

    # This node_modules also contains devDependencies (vite, svelte, etc.)
    # since they're not split from the frontend's in package.json. Harmless
    # but adds closure size; `pnpm prune --prod` here before copying would
    # trim it if that starts to matter.
    mkdir -p $out/lib/streamplace-bot
    cp -r src package.json node_modules $out/lib/streamplace-bot/

    makeWrapper ${lib.getExe nodejs} $out/bin/streamplace-bot \
      --add-flags "--experimental-strip-types" \
      --add-flags "$out/lib/streamplace-bot/src/bot.ts" \
      --chdir "$out/lib/streamplace-bot"

    runHook postInstall
  '';

  meta = {
    description = "streamplace-bot: a streaming bot for Streamplace";
    mainProgram = "streamplace-bot";
    license = lib.licenses.mit;
  };
})