{ stdenvNoCC, fetchzip, lib, kobo-utils, gawk, ... }:
{ hardware, date, version, hash ? "", ... }:
stdenvNoCC.mkDerivation (finalAttrs: {
  pname = "kobo-firmware";
  inherit version hardware date;

  src = fetchzip {
    url = "https://ereaderfiles.kobo.com/firmwares/${finalAttrs.hardware}/${finalAttrs.date}/kobo-update-${finalAttrs.version}.zip";
    stripRoot = false;
    inherit hash;
  };

  nativeBuildInputs = [
    kobo-utils
    gawk
  ];

  # outputs = [
  #   "out"
  #   "KoboRoot"
  # ];

  phases = [
    "checkPhase"
    "installPhase"
  ];

  doCheck = true;

  checkPhase = ''
    KOBOVERSION="$(kobo-versionextract "$src/KoboRoot.tgz" | awk '{if ($1 == "Version:") print $2}')"

    if [[ ! "$KOBOVERSION" == "${finalAttrs.version}" ]]; then
      >&2 echo "Expected version ${finalAttrs.version}, but actual firmware is version $KOBOVERSION"
      exit 1
    fi
  '';

  installPhase = ''
    runHook preInstall

    cp -rv $src $out
    # rsync -av --links --exclude="KoboRoot.tgz" $src/ $out

    # mkdir $KoboRoot
    # tar xvzf $src/KoboRoot.tgz --directory=$KoboRoot

    runHook postInstall
  '';

  passthru = {
    inherit hardware date;
  };

  meta = with lib; {
    homepage = "https://pgaskin.net/KoboStuff/kobofirmware.html";
    description = ''
      Kobo firmware files.
    '';
    platform = platforms.all;
    # outputsToInstall = finalAttrs.outputs;
  };
})