{ stdenv, fetchurl, makeWrapper, pkg-config, gtk2, gtk2-x11, gtkspell2, aspell
, gst_all_1, libstartup_notification, gettext, perlPackages, libxml2, nss
, nspr, farstream, libXScrnSaver, avahi, dbus, dbus-glib, intltool, libidn
, lib, python3, libICE, libXext, libSM, libgnt, ncurses, cyrus_sasl, openssl
, gnutls, libgcrypt, symlinkJoin, cacert, plugins, withOpenssl, withGnutls, withCyrus_sasl ? true
}:

# FIXME: clean the mess around choosing the SSL library (nss by default)

let unwrapped = stdenv.mkDerivation rec {
  pname = "pidgin";
  version = "2.14.8";

  src = fetchurl {
    url = "mirror://sourceforge/pidgin/pidgin-${version}.tar.bz2";
    sha256 = "1jjc15pfyw3012q5ffv7q4r88wv07ndqh0wakyxa2k0w4708b01z";
  };

  nativeBuildInputs = [ makeWrapper ];

  NIX_CFLAGS_COMPILE = "-I${gst_all_1.gst-plugins-base.dev}/include/gstreamer-1.0";

  buildInputs = let
    python-with-dbus = python3.withPackages (pp: with pp; [ dbus-python ]);
  in [
    aspell libstartup_notification
    gst_all_1.gstreamer gst_all_1.gst-plugins-base gst_all_1.gst-plugins-good
    libxml2 nss nspr
    libXScrnSaver python-with-dbus
    avahi dbus dbus-glib intltool libidn
    libICE libXext libSM cyrus_sasl
    libgnt ncurses # optional: build finch - the console UI
  ]
  ++ lib.optional withOpenssl openssl
  ++ lib.optionals withGnutls [ gnutls libgcrypt ]
  ++ lib.optionals stdenv.isLinux [ gtk2 gtkspell2 farstream ]
  ++ lib.optional stdenv.isDarwin gtk2-x11;


  propagatedBuildInputs = [ pkg-config gettext ]
    ++ (with perlPackages; [ perl XMLParser ])
    ++ lib.optional stdenv.isLinux gtk2
    ++ lib.optional stdenv.isDarwin gtk2-x11;

  patches = [ ./pidgin-makefile.patch ./add-search-path.patch ];

  configureFlags = [
    "--with-nspr-includes=${nspr.dev}/include/nspr"
    "--with-nspr-libs=${nspr.out}/lib"
    "--with-nss-includes=${nss.dev}/include/nss"
    "--with-nss-libs=${nss.out}/lib"
    "--with-ncurses-headers=${ncurses.dev}/include"
    "--with-system-ssl-certs=${cacert}/etc/ssl/certs"
    "--disable-meanwhile"
    "--disable-nm"
    "--disable-tcl"
    "--disable-gevolution"
  ]
  ++ lib.optionals withCyrus_sasl [ "--enable-cyrus-sasl=yes" ]
  ++ lib.optionals withGnutls ["--enable-gnutls=yes" "--enable-nss=no"]
  ++ lib.optionals stdenv.isDarwin ["--disable-gtkspell" "--disable-vv"];

  enableParallelBuilding = true;

  postInstall = ''
    wrapProgram $out/bin/pidgin \
      --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0"
  '';

  doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;
  # In particular, this detects missing python imports in some of the tools.
  postFixup = let
    # TODO: python is a script, so it doesn't work as interpreter on darwin
    binsToTest = lib.optionalString stdenv.isLinux "purple-remote," + "pidgin,finch";
  in lib.optionalString doInstallCheck ''
    for f in "''${!outputBin}"/bin/{${binsToTest}}; do
      echo "Testing: $f --help"
      "$f" --help
    done
  '';

  passthru = {
    makePluginPath = lib.makeSearchPathOutput "lib" "lib/purple-${lib.versions.major version}";
  };

  meta = with lib; {
    description = "Multi-protocol instant messaging client";
    homepage = "https://pidgin.im/";
    license = licenses.gpl2Plus;
    platforms = platforms.unix;
    maintainers = [ maintainers.vcunat ];
  };
};

in if plugins == [] then unwrapped
    else import ./wrapper.nix {
      inherit makeWrapper symlinkJoin plugins;
      pidgin = unwrapped;
    }