{ stdenv, lib, fetchFromGitHub, cmake, pkg-config, makeWrapper, freetype, SDL2
, glib, pcre2, openal, rtmidi, fluidsynth, jack2, alsa-lib, qt5, libvncserver
, discord-gamesdk, libpcap, libslirp

, enableDynarec ? with stdenv.hostPlatform; isx86 || isAarch
, enableNewDynarec ? enableDynarec && stdenv.hostPlatform.isAarch
, enableVncRenderer ? false
, unfreeEnableDiscord ? false
, unfreeEnableRoms ? false
}:

stdenv.mkDerivation (finalAttrs: {
  pname = "86Box";
  version = "4.1";

  src = fetchFromGitHub {
    owner = "86Box";
    repo = "86Box";
    rev = "v${finalAttrs.version}";
    hash = "sha256-JYOJFXiUTLRs6AEMYNx88PwcVw13ChQzV1ZE5OtX6Ds=";
  };

  nativeBuildInputs = [
    cmake
    pkg-config
    makeWrapper
    qt5.wrapQtAppsHook
  ];

  buildInputs = [
    freetype
    fluidsynth
    SDL2
    glib
    openal
    rtmidi
    pcre2
    jack2
    libpcap
    libslirp
    qt5.qtbase
    qt5.qttools
  ] ++ lib.optional stdenv.isLinux alsa-lib
    ++ lib.optional enableVncRenderer libvncserver;

  cmakeFlags = lib.optional stdenv.isDarwin "-DCMAKE_MACOSX_BUNDLE=OFF"
    ++ lib.optional enableNewDynarec "-DNEW_DYNAREC=ON"
    ++ lib.optional enableVncRenderer "-DVNC=ON"
    ++ lib.optional (!enableDynarec) "-DDYNAREC=OFF"
    ++ lib.optional (!unfreeEnableDiscord) "-DDISCORD=OFF";

  postInstall = lib.optionalString stdenv.isLinux ''
    install -Dm644 -t $out/share/applications $src/src/unix/assets/net.86box.86Box.desktop

    for size in 48 64 72 96 128 192 256 512; do
      install -Dm644 -t $out/share/icons/hicolor/"$size"x"$size"/apps \
        $src/src/unix/assets/"$size"x"$size"/net.86box.86Box.png
    done;
  ''
  + lib.optionalString unfreeEnableRoms ''
    mkdir -p $out/share/86Box
    ln -s ${finalAttrs.passthru.roms} $out/share/86Box/roms
  '';

  passthru = {
    roms = fetchFromGitHub {
      owner = "86Box";
      repo = "roms";
      rev = "v${finalAttrs.version}";
      hash = "sha256-1HtoizO0QIGNjQTW0clzRp40h1ulw55+iTYz12UJSms=";
    };
  };

  # Some libraries are loaded dynamically, but QLibrary doesn't seem to search
  # the runpath, so use a wrapper instead.
  preFixup = let
    libPath = lib.makeLibraryPath ([
      libpcap
    ] ++ lib.optional unfreeEnableDiscord discord-gamesdk);
    libPathVar = if stdenv.isDarwin then "DYLD_LIBRARY_PATH" else "LD_LIBRARY_PATH";
  in ''
    makeWrapperArgs+=(--prefix ${libPathVar} : "${libPath}")
  '';

  meta = with lib; {
    description = "Emulator of x86-based machines based on PCem.";
    mainProgram = "86Box";
    homepage = "https://86box.net/";
    license = with licenses; [ gpl2Only ]
      ++ optional (unfreeEnableDiscord || unfreeEnableRoms) unfree;
    maintainers = [ maintainers.jchw ];
    platforms = platforms.linux;
  };
})