{ lib, stdenv, fetchFromGitHub, fetchpatch, autoreconfHook, doxygen
, numactl, rdma-core, libbfd, libiberty, perl, zlib, symlinkJoin
, enableCuda ? false
, cudatoolkit
}:

let
  # Needed for configure to find all libraries
  cudatoolkit' = symlinkJoin {
    inherit (cudatoolkit) name meta;
    paths = [ cudatoolkit cudatoolkit.lib ];
  };

in stdenv.mkDerivation rec {
  pname = "ucx";
  version = "1.13.1";

  src = fetchFromGitHub {
    owner = "openucx";
    repo = "ucx";
    rev = "v${version}";
    sha256 = "sha256-NhtN8xrHc6UnUrMbq9LHpb25JO+/LDGcLLGebCfGnv4=";
  };

  patches = [
    # Pull upstream fix for binutils-2.39:
    #   https://github.com/openucx/ucx/pull/8450
    (fetchpatch {
      name = "binutils-2.39.patch";
      url = "https://github.com/openucx/ucx/commit/6b6128efd416831cec3a1820f7d1c8e648b79448.patch";
      sha256 = "sha256-ci00nZG8iOUEFXbmgr/5XkIfiw4eAAdG1wcEYjQSiT8=";
    })
  ];

  nativeBuildInputs = [ autoreconfHook doxygen ];

  buildInputs = [
    libbfd
    libiberty
    numactl
    perl
    rdma-core
    zlib
  ] ++ lib.optional enableCuda cudatoolkit;

  configureFlags = [
    "--with-rdmacm=${rdma-core}"
    "--with-dc"
    "--with-rc"
    "--with-dm"
    "--with-verbs=${rdma-core}"
  ] ++ lib.optional enableCuda "--with-cuda=${cudatoolkit'}";

  enableParallelBuilding = true;

  meta = with lib; {
    description = "Unified Communication X library";
    homepage = "http://www.openucx.org";
    license = licenses.bsd3;
    platforms = platforms.linux;
    maintainers = [ maintainers.markuskowa ];
  };
}