python3Packages.dlib: Inherit stdenv and build flags from main derivation, fix tests (#273665)

{

  stdenv,

  buildPythonPackage,

  dlib,

  python,

  pytestCheckHook,

  more-itertools,

  sse4Support ? stdenv.hostPlatform.sse4_1Support,

  avxSupport ? stdenv.hostPlatform.avxSupport,

}:

buildPythonPackage {

  inherit (dlib)

    stdenv

    pname

    version

    src

    nativeBuildInputs

    buildInputs

    cmakeFlags

    passthru

    meta

    ;

      --replace "pytest==3.8" "pytest"

  '';

  setupPyBuildFlags = [

    "--set USE_SSE4_INSTRUCTIONS=${if sse4Support then "yes" else "no"}"

    "--set USE_AVX_INSTRUCTIONS=${if avxSupport then "yes" else "no"}"

  ];

  # Pass CMake flags through to the build script

  preConfigure = ''

    for flag in $cmakeFlags; do

      if [[ "$flag" == -D* ]]; then

        setupPyBuildFlags+=" --set ''${flag#-D}"

      fi

    done

  '';

  dontUseCmakeConfigure = true;

  doCheck =

    !(

      # The tests attempt to use CUDA on the build platform.

      # https://github.com/NixOS/nixpkgs/issues/225912

      dlib.cudaSupport

      # although AVX can be enabled, we never test with it. Some Hydra machines

      # fail because of this, however their build results are probably used on hardware

      # with AVX support.

      || dlib.avxSupport

    );

}