when removing install and rerunning colcon build several warnings pop up in rcdt_detection_msgs referencing the /install/dir

[YuriVanWarmerdam]

Some sample output:

Starting >>> rcdt_detection_msgs
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_worlds' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_utilities' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_utilities_msgs' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_panther' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_mobile_manipulator_moveit_config' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_mobile_manipulator' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_gz_worlds' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_franka_moveit_config' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_franka' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_detection' in the environment variable CMAKE_PREFIX_PATH doesn't exist
[0.159s] WARNING:colcon.colcon_ros.prefix_path.catkin:The path '/home/rcdt/rcdt_robotics/ros2_ws/install/rcdt_detection_msgs' in the environment variable CMAKE_PREFIX_PATH doesn't exist

This suggests that the install directory is referenced from an install script. Might be good to have a look at these sometime to limit these warnings.