Unable to install ROS 2 UR Driver with Foxy branch

[nqduy35]

Hello, I'm having trouble installing UR ROS 2 Driver following the guide in README of Foxy branch. Note that I have tried with Humble branch in another Ubuntu 22.04 laptop and everything works fine.

In detail:

• After running $ rosdep update, then $ rosdep install --ignore-src --from-paths src -y , I see the return:

ur_bringup: Cannot locate rosdep definition for [xacro]
ur_robot_driver: Cannot locate rosdep definition for [ur_msgs]
ur_controllers: Cannot locate rosdep definition for [ur_msgs]
ur_dashboard_msgs: Cannot locate rosdep definition for [action_msgs]
ur_description: Cannot locate rosdep definition for [xacro]
ur_calibration: Cannot locate rosdep definition for [ur_client_library]
ur_moveit_config: Cannot locate rosdep definition for [xacro]
Continuing to install resolvable dependencies...
#All required rosdeps installed successfully

• Then if I continue to run $ colcon build --cmake-args -DCMAKE_BUILD_TYPE=Release, I have:

Starting >>> ur_dashboard_msgs
Starting >>> ur_description
Starting >>> ur_moveit_config
--- stderr: ur_dashboard_msgs
CMake Error at CMakeLists.txt:4 (find_package):
By not providing "Findament_cmake.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"ament_cmake", but CMake did not find one.

Could not find a package configuration file provided by "ament_cmake" with
any of the following names:

ament_cmakeConfig.cmake
ament_cmake-config.cmake

Add the installation prefix of "ament_cmake" to CMAKE_PREFIX_PATH or set
"ament_cmake_DIR" to a directory containing one of the above files. If
"ament_cmake" provides a separate development package or SDK, be sure it
has been installed.

Failed <<< ur_dashboard_msgs [0.32s, exited with code 1]
Aborted <<< ur_description [0.31s]
Aborted <<< ur_moveit_config [0.31s]

Summary: 0 packages finished [0.40s]
1 package failed: ur_dashboard_msgs
2 packages aborted: ur_description ur_moveit_config
3 packages had stderr output: ur_dashboard_msgs ur_description ur_moveit_config
4 packages not processed

Do you have any suggestion for me to control my UR with my laptop Ubuntu 20.04 ? Could you update the README in Foxy branch with a good instruction (if it is not correct)? Thank you.

[fmauch]

Hi, ROS 2 foxy is end-of-life and not supported anymore. This is also reflected in the rosdep command. You might get further using --include-eol-distros to the rosdep commands, but I don't know whether this will completely resolve things. I expect things to at least build, since they still do in our nightly CI jobs.

However, since it is no longer supported I'll leave you with that and close this issue.