{ mkDerivation, lib
, extra-cmake-modules, kdoctools
, breeze-icons, chmlib, discount, djvulibre, ebook_tools, kactivities
, karchive, kbookmarks, kcompletion, kconfig, kconfigwidgets, kcoreaddons
, kdbusaddons, kdegraphics-mobipocket, kiconthemes, kjs, khtml, kio, kparts
, kpty, kpurpose, kwallet, kwindowsystem, libkexiv2, libspectre, libzip, phonon, poppler
, qca-qt5, qtdeclarative, qtsvg, threadweaver, kcrash
, withSpeech ? true, qtspeech, qtx11extras
}:

mkDerivation {
  pname = "okular";

  nativeBuildInputs = [ extra-cmake-modules kdoctools ];

  buildInputs = [
    breeze-icons discount djvulibre ebook_tools kactivities karchive kbookmarks
    kcompletion kconfig kconfigwidgets kcoreaddons kdbusaddons
    kdegraphics-mobipocket kiconthemes kjs khtml kio kparts kpty kpurpose kwallet
    kwindowsystem libkexiv2 libspectre libzip phonon poppler qca-qt5
    qtdeclarative qtsvg threadweaver kcrash chmlib qtx11extras
  ] ++ lib.optional withSpeech qtspeech;

  # InitialPreference values are too high and end up making okular
  # default for anything considered text/plain. Resetting to 1, which
  # is the default.
  postPatch = ''
    substituteInPlace generators/txt/okularApplication_txt.desktop \
      --replace InitialPreference=3 InitialPreference=1
  '';

  cmakeFlags = lib.optional (!withSpeech) "-DFORCE_NOT_REQUIRED_DEPENDENCIES=Qt5TextToSpeech";

  meta = with lib; {
    homepage = "http://www.kde.org";
    description = "KDE document viewer";
    mainProgram = "okular";
    license = with licenses; [ gpl2Plus lgpl21Plus fdl12Plus bsd3 ];
    maintainers = with maintainers; [ ttuegel ];
    platforms = lib.platforms.linux;
  };
}