Hi everyone,

I am currently using ROS Crystal from source. I have a second workspace where i have included the control_msgs package for bouncy. LINK.

The problem in that after successfully building the package and sourcing the corresponding install/setup.bash file, I still cannot import that particular module in python.

The error is the typical ImportError: No module named control_msgs.

Any advide? Thanks

UPDATE

Trying to fix this myself at: https://github.com/nzlz/control_msgs/tree/crystal-devel

Error:

nestor@n-pc:~/ros2_mara_ws$ colcon build --merge-install --packages-select control_msgs
Starting >>> control_msgs
--- stderr: control_msgs                         
CMake Error at /home/nestor/ros2_ws/install/rosidl_adapter/share/rosidl_adapter/cmake/rosidl_adapt_interfaces.cmake:60 (message):
  execute_process(/usr/bin/python3 -m rosidl_adapter --package-name
  control_msgs --arguments-file
  /home/nestor/ros2_mara_ws/build/control_msgs/rosidl_adapter__arguments__control_msgs.json
  --output-dir
  /home/nestor/ros2_mara_ws/build/control_msgs/rosidl_adapter/control_msgs
  --output-file
  /home/nestor/ros2_mara_ws/build/control_msgs/rosidl_adapter/control_msgs.idls)
  returned error code 1:

  KeyError processing template 'struct.idl.em': 'duration'

Call Stack (most recent call first):
  /home/nestor/ros2_ws/install/rosidl_cmake/share/rosidl_cmake/cmake/rosidl_generate_interfaces.cmake:126 (rosidl_adapt_interfaces)
  CMakeLists.txt:39 (rosidl_generate_interfaces)


make: *** [cmake_check_build_system] Error 1
---
Failed   <<< control_msgs   [ Exited with code 2 ]

Summary: 0 packages finished [1.49s]
  1 package failed: control_msgs
  1 package had stderr output: control_msgs