home/pkgs/zbar/default.nix

{
  stdenv,
  lib,
  fetchFromGitHub,
  imagemagickBig,
  pkg-config,
  libX11,
  libv4l,
  libiconv,
  qtbase ? null,
  darwin,
  qtx11extras ? null,
  wrapQtAppsHook ? null,
  wrapGAppsHook,
  gtk3,
  xmlto,
  docbook_xsl,
  autoreconfHook,
  dbus,
  enableVideo ? stdenv.isLinux,
  # The implementation is buggy and produces an error like
  # Name Error (Connection ":1.4380" is not allowed to own the service "org.linuxtv.Zbar" due to security policies in the configuration file)
  # for every scanned code.
  # see https://github.com/mchehab/zbar/issues/104
  enableDbus ? false,
  libintl,
}:
stdenv.mkDerivation rec {
  pname = "zbar";
  version = "0.23.90";

  outputs = ["out" "lib" "dev" "doc" "man"];

  src = fetchFromGitHub {
    owner = "mchehab";
    repo = "zbar";
    rev = version;
    sha256 = "sha256-FvV7TMc4JbOiRjWLka0IhtpGGqGm5fis7h870OmJw2U=";
  };

  nativeBuildInputs =
    [pkg-config xmlto autoreconfHook docbook_xsl] ++ lib.optionals enableVideo [wrapQtAppsHook wrapGAppsHook];

  buildInputs =
    [imagemagickBig libX11 libintl]
    ++ lib.optionals enableDbus [dbus]
    ++ lib.optionals enableVideo [libv4l gtk3 qtbase qtx11extras]
    ++ lib.optionals stdenv.isDarwin [libiconv darwin.apple_sdk.frameworks.Foundation];

  # Disable assertions which include -dev QtBase file paths.
  NIX_CFLAGS_COMPILE = "-DQT_NO_DEBUG";

  configureFlags =
    ["--without-python"]
    ++ (
      if enableDbus
      then ["--with-dbusconfdir=${placeholder "out"}/share"]
      else ["--without-dbus"]
    )
    ++ (
      if enableVideo
      then ["--with-gtk=gtk3"]
      else [
        "--disable-video"
        "--without-gtk"
        "--without-qt"
      ]
    );

  dontWrapQtApps = true;
  dontWrapGApps = true;

  postFixup = lib.optionalString enableVideo ''
    wrapGApp "$out/bin/zbarcam-gtk"
    wrapQtApp "$out/bin/zbarcam-qt"
  '';

  enableParallelBuilding = true;

  meta = with lib; {
    description = "Bar code reader";
    longDescription = ''
      ZBar is an open source software suite for reading bar codes from various
      sources, such as video streams, image files and raw intensity sensors. It
      supports many popular symbologies (types of bar codes) including
      EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR
      Code.
    '';
    maintainers = with maintainers; [delroth raskin];
    platforms = platforms.unix;
    license = licenses.lgpl21;
    homepage = "https://github.com/mchehab/zbar";
  };
}