# Copyright 2018 Pants project contributors (see CONTRIBUTORS.md).
# Licensed under the Apache License, Version 2.0 (see LICENSE).

from pants.backend.native.subsystems.packaging.conan import Conan
from pants.backend.native.targets.external_native_library import ExternalNativeLibrary
from pants.backend.python.tasks.python_tool_prep_base import PythonToolInstance, PythonToolPrepBase


class ConanInstance(PythonToolInstance):
    pass


class ConanPrep(PythonToolPrepBase):
    tool_subsystem_cls = Conan
    tool_instance_cls = ConanInstance

    def will_be_invoked(self):
        return any(self.get_targets(lambda t: isinstance(t, ExternalNativeLibrary)))