run_uvloop not loaded

[elliott-farrall]

I (among others) would be very interested in seeing this included in nixpkgs. I had a go at writing a derivation myself but am having trouble with run_uvloop.

I managed to get the installer to start but it crashes when trying to load run_uvloop from ~/.config/wljs-notebook/wl_packages/KirillBelov_CSockets/LibraryResources/Linux-x86-64-v<version>/usockets.so. It tries version 7, 6 (failing to load on both) and then 5 (failing since it does not exist).

I have linked in libuv by wrapping the executable like so:

{
  lib,
  stdenv,
  fetchzip,
  makeWrapper,
  glib,
  ffmpeg,
  nss,
  nspr,
  dbus,
  atk,
  cups,
  libdrm,
  gtk3,
  pango,
  cairo,
  xorg,
  libgbm,
  expat,
  libxkbcommon,
  alsa-lib,
  libuv,
  libGL
}:

stdenv.mkDerivation rec {
  pname = "wolfram-js-frontend";
  version = "2.7.0";

  src = fetchzip {
    url = "https://github.com/JerryI/wolfram-js-frontend/releases/download/v${version}/wljs-notebook-${version}-x64-gnulinux.zip";
    hash = "sha256-dvJ9P4+Ym7seAS0gn+BINlsL4+OsWqOSWTyYSDoHAxs=";
    stripRoot = false;
  };

  nativeBuildInputs = [ makeWrapper ];

  installPhase = ''
    runHook preInstall

    makeWrapper $src/wljs-notebook $out/bin/wolfram-js-frontend \
      --prefix LD_LIBRARY_PATH : "${lib.makeLibraryPath [ glib ffmpeg nss nspr dbus atk cups libdrm gtk3 pango cairo xorg.libX11 xorg.libXcomposite xorg.libXdamage xorg.libXext xorg.libXfixes xorg.libXrandr libgbm expat xorg.libxcb libxkbcommon alsa-lib libuv libGL ]}"

    runHook postInstall
  '';

  meta = {
    description = "Freeware notebook environment for Wolfram Language written in Javascript";
    homepage = "https://github.com/JerryI/wolfram-js-frontend";
    license = lib.licenses.gpl3Only;
    # maintainers = with lib.maintainers; [ ];
    mainProgram = "wolfram-js-frontend";
    platforms = lib.platforms.all;
  };
}

I understand that not many people use nixpkgs but any pointers on what might be causing this would be greatly appreciated.

[JerryI]

Hi @elliott-farrall
Thank you for your efforts!

The way how we build sockets library is automated in Github Actions and it does this command on x86 Ubuntu

generated by CreateLibrary function

/usr/bin/gcc -shared -o "/root/test/CSocketListener/LibraryResources/Linux-x86-64-v7/Working-wljs-343749-607313088-1/usockets.so" \
-m64  -fPIC -O2  -I"/usr/local/Wolfram/WolframEngine/14.2/SystemFiles/IncludeFiles/C" \
-I"/usr/local/Wolfram/WolframEngine/14.2/SystemFiles/Links/MathLink/DeveloperKit/Linux-x86-64/CompilerAdditions" \
-I"/usr/include" "/root/test/CSocketListener/Source/usockets.c"  \
-L"/usr/local/Wolfram/WolframEngine/14.2/SystemFiles/Links/MathLink/DeveloperKit/Linux-x86-64/CompilerAdditions" \
-L"/usr/local/Wolfram/WolframEngine/14.2/SystemFiles/Libraries/Linux-x86-64"  \
"/usr/lib/x86_64-linux-gnu/libuv.so"  2>&1

I am not in expert in GCC, but I guess, it should statically link uv. If not, may be it checks LD_LIBRARY_PATH...

Another possibility, it looks like Wolfram Engine itself uses dynamic libs located in its installation directory. At least $LibraryPath gives a big list. (sorry if my understanding of linking and your wrapper is too off :0)