Minimal ROS2 launch file via include and launch the gazebo.launch.py file.

include_gazebo_simulation.launch.py

"""Launch Gazebo server and client via include and launch the gazebo.launch.py file."""

import os
from launch import LaunchDescription
from launch.actions import IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource
from ament_index_python.packages import get_package_share_directory


def generate_launch_description():

    pkg_gazebo_ros = get_package_share_directory('gazebo_ros')

    # Gazebo launch
    gazebo = IncludeLaunchDescription(
        PythonLaunchDescriptionSource(
            os.path.join(pkg_gazebo_ros, 'launch', 'gazebo.launch.py'),
        )
    )

    return LaunchDescription([
        gazebo,
    ])