depot/third_party/nixpkgs/pkgs/development/python-modules/tensorflow-metadata/default.nix

{ absl-py
, buildPythonPackage
, fetchFromGitHub
, googleapis-common-protos
, protobuf
, lib
}:

buildPythonPackage rec {
  pname = "tensorflow-metadata";
  version = "1.12.0";

  src = fetchFromGitHub {
    owner = "tensorflow";
    repo = "metadata";
    rev = "refs/tags/v${version}";
    hash = "sha256-pgeQ9qMcz/DsdvF3THMZ4uPToLxtIM0No/kgRlBzU8A=";
  };

  patches = [
    ./build.patch
  ];

  postPatch = ''
    substituteInPlace setup.py \
      --replace 'protobuf>=3.13,<4' 'protobuf>=3.13'
  '';

  # Default build pulls in Bazel + extra deps, given the actual build
  # is literally three lines (see below) - replace it with custom build.
  preBuild = ''
    for proto in tensorflow_metadata/proto/v0/*.proto; do
      protoc --python_out=. $proto
    done
  '';

  propagatedBuildInputs = [
    absl-py
    googleapis-common-protos
    protobuf
  ];

  # has no tests
  doCheck = false;

  pythonImportsCheck = [
    "tensorflow_metadata"
  ];

  meta = with lib; {
    description = "Standard representations for metadata that are useful when training machine learning models with TensorFlow";
    homepage = "https://github.com/tensorflow/metadata";
    license = licenses.asl20;
    maintainers = with maintainers; [ ndl ];
  };
}