Install generated Python interfaces in a Python package (#131)

Signed-off-by: Michel Hidalgo <michel@ekumenlabs.com>

Author: hidmic

rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake

@@ -121,19 +121,7 @@ rosidl_write_generator_arguments(
 )
 
 if(NOT rosidl_generate_interfaces_SKIP_INSTALL)
-  ament_python_install_module("${_output_path}/__init__.py"
-    DESTINATION_SUFFIX "${PROJECT_NAME}"
-  )
-
-  # TODO(esteve): replace this with ament_python_install_module and allow a list
-  # of modules to be passed instead of iterating over _generated_py_files
-  # See https://github.com/ros2/rosidl/issues/89
-  foreach(_generated_py_dir ${_generated_py_dirs})
-    install(DIRECTORY "${_output_path}/${_generated_py_dir}/"
-      DESTINATION "${PYTHON_INSTALL_DIR}/${PROJECT_NAME}/${_generated_py_dir}"
-      PATTERN "*.py"
-    )
-  endforeach()
+  ament_python_install_package(${PROJECT_NAME} PACKAGE_DIR "${_output_path}")
 endif()
 
 set(_target_suffix "__py")