{ stdenv, lib, perl, fetchurl, python2
, pkgconfig, spidermonkey_38, boost, icu, libxml2, libpng, libsodium
, libjpeg, zlib, curl, libogg, libvorbis, enet, miniupnpc
, openal, libGLU, libGL, xorgproto, libX11, libXcursor, nspr, SDL2
, gloox, nvidia-texture-tools
, withEditor ? true, wxGTK ? null
}:

assert withEditor -> wxGTK != null;

stdenv.mkDerivation rec {
  pname = "0ad";
  version = "0.0.23b";

  src = fetchurl {
    url = "http://releases.wildfiregames.com/0ad-${version}-alpha-unix-build.tar.xz";
    sha256 = "0draa53xg69i5qhqym85658m45xhwkbiimaldj4sr3703rjgggq1";
  };

  nativeBuildInputs = [ python2 perl pkgconfig ];

  buildInputs = [
    spidermonkey_38 boost icu libxml2 libpng libjpeg
    zlib curl libogg libvorbis enet miniupnpc openal
    libGLU libGL xorgproto libX11 libXcursor nspr SDL2 gloox
    nvidia-texture-tools libsodium
  ] ++ lib.optional withEditor wxGTK;

  NIX_CFLAGS_COMPILE = [
    "-I${xorgproto}/include/X11"
    "-I${libX11.dev}/include/X11"
    "-I${libXcursor.dev}/include/X11"
    "-I${SDL2}/include/SDL2"
  ];

  patches = [
    ./rootdir_env.patch
    # Fixes build with spidermonkey-38.8.0, includes the minor version check:
    # https://src.fedoraproject.org/rpms/0ad/c/26dc1657f6e3c0ad9f1180ca38cd79b933ef0c8b
    (fetchurl {
      url = https://src.fedoraproject.org/rpms/0ad/raw/26dc1657f6e3c0ad9f1180ca38cd79b933ef0c8b/f/0ad-mozjs-incompatible.patch;
      sha256 = "1rzpaalcrzihsgvlk3nqd87n2kxjldlwvb3qp5fcd5ffzr6k90wa";
    })
  ];

  configurePhase = ''
    # Delete shipped libraries which we don't need.
    rm -rf libraries/source/{enet,miniupnpc,nvtt,spidermonkey}

    # Workaround invalid pkgconfig name for mozjs
    mkdir pkgconfig
    ln -s ${spidermonkey_38}/lib/pkgconfig/* pkgconfig/mozjs-38.pc
    PKG_CONFIG_PATH="$PWD/pkgconfig:$PKG_CONFIG_PATH"

    # Update Makefiles
    pushd build/workspaces
    ./update-workspaces.sh \
      --with-system-nvtt \
      --with-system-mozjs38 \
      ${lib.optionalString withEditor "--enable-atlas"} \
      --bindir="$out"/bin \
      --libdir="$out"/lib/0ad \
      --without-tests \
      -j $NIX_BUILD_CORES
    popd

    # Move to the build directory.
    pushd build/workspaces/gcc
  '';

  enableParallelBuilding = true;

  installPhase = ''
    popd

    # Copy executables.
    install -Dm755 binaries/system/pyrogenesis "$out"/bin/0ad
    ${lib.optionalString withEditor ''
      install -Dm755 binaries/system/ActorEditor "$out"/bin/ActorEditor
    ''}

    # Copy l10n data.
    install -Dm755 -t $out/share/0ad/data/l10n binaries/data/l10n/*

    # Copy libraries.
    install -Dm644 -t $out/lib/0ad        binaries/system/*.so

    # Copy icon.
    install -D build/resources/0ad.png     $out/share/icons/hicolor/128x128/0ad.png
    install -D build/resources/0ad.desktop $out/share/applications/0ad.desktop
  '';

  meta = with stdenv.lib; {
    description = "A free, open-source game of ancient warfare";
    homepage = "https://play0ad.com/";
    license = with licenses; [
      gpl2 lgpl21 mit cc-by-sa-30
      licenses.zlib # otherwise masked by pkgs.zlib
    ];
    platforms = subtractLists platforms.i686 platforms.linux;
  };
}