nixpkgs/pkgs/development/python-modules/xgboost/default.nix

{ buildPythonPackage
, pytestCheckHook
, cmake
, scipy
, scikitlearn
, stdenv
, xgboost
, substituteAll
, pandas
, matplotlib
, graphviz
, datatable
, hypothesis
}:

buildPythonPackage {
  pname = "xgboost";
  inherit (xgboost) version src meta;

  nativeBuildInputs = [ cmake ];
  buildInputs = [ xgboost ];
  propagatedBuildInputs = [ scipy ];
  checkInputs = [
    pytestCheckHook
    scikitlearn
    pandas
    matplotlib
    graphviz
    datatable
    hypothesis
  ];

  # Override existing logic for locating libxgboost.so which is not appropriate for Nix
  prePatch = let
    libPath = "${xgboost}/lib/libxgboost${stdenv.hostPlatform.extensions.sharedLibrary}";
  in ''
    echo 'find_lib_path = lambda: ["${libPath}"]' > python-package/xgboost/libpath.py
  '';

  dontUseCmakeConfigure = true;

  postPatch = ''
    cd python-package
  '';

  preCheck = ''
    ln -sf ../demo .
    ln -s ${xgboost}/bin/xgboost ../xgboost
  '';

  pytestFlagsArray = ["../tests/python"];
  disabledTestPaths = [
    # Requires internet access: https://github.com/dmlc/xgboost/blob/03cd087da180b7dff21bd8ef34997bf747016025/tests/python/test_ranking.py#L81
    "../tests/python/test_ranking.py"
  ];
  disabledTests = [
    "test_cli_binary_classification"
    "test_model_compatibility"
  ];

}