Trailing newline in rosdep install on Windows

Description

install_rosdeps.sh on Windows passes paths with trailing newlines to rosdep install.

Expected Behavior

The install_rosdeps.sh step works on Windows.

Actual Behavior

The install_rosdeps.sh step fails on Windows with an error message like

  given path 'src\r3ydc6px8z\my_package
  ' does not exist

The path has a trailing newline, which it doesn't on Ubuntu, and I suspect that this is the cause for the failure.

To Reproduce

See https://github.com/ros2-rust/ros2_rust/runs/7827723402?check_suite_focus=true

System (please complete the following information)

OS: Windows
ROS 2 Distro: Foxy

Additional context

This occurred while adding a Windows workflow to the ros2_rust repo. See ros2-rust/ros2_rust#222

Interesting, thanks for bringing this up @nnmm.

It seems like this is handled fine on Ubuntu:

 ++ colcon list --paths-only --packages-up-to examples_rclrs_message_demo examples_rclrs_minimal_client_service examples_rclrs_minimal_pub_sub rclrs rclrs_example_msgs rosidl_generator_rs rosidl_runtime_rs
  + package_paths='src/mo0f04hva3p/ros2_rust/examples/message_demo
  src/mo0f04hva3p/ros2_rust/examples/minimal_client_service
  src/mo0f04hva3p/ros2_rust/examples/minimal_pub_sub
  src/mo0f04hva3p/ros2_rust/rclrs
  src/mo0f04hva3p/ros2_rust/rclrs_example_msgs
  src/mo0f04hva3p/ros2_rust/rosidl_generator_rs
  src/mo0f04hva3p/ros2_rust/rosidl_runtime_rs
  src/ros2/common_interfaces/std_msgs
  src/ros2/example_interfaces
  src/ros2/rcl_interfaces/action_msgs
  src/ros2/rcl_interfaces/builtin_interfaces
  src/ros2/rosidl_defaults/rosidl_default_generators
  src/ros2/rosidl_defaults/rosidl_default_runtime
  src/ros2/unique_identifier_msgs'
  + rosdep install -r --from-paths src/mo0f04hva3p/ros2_rust/examples/message_demo src/mo0f04hva3p/ros2_rust/examples/minimal_client_service src/mo0f04hva3p/ros2_rust/examples/minimal_pub_sub src/mo0f04hva3p/ros2_rust/rclrs src/mo0f04hva3p/ros2_rust/rclrs_example_msgs src/mo0f04hva3p/ros2_rust/rosidl_generator_rs src/mo0f04hva3p/ros2_rust/rosidl_runtime_rs src/ros2/common_interfaces/std_msgs src/ros2/example_interfaces src/ros2/rcl_interfaces/action_msgs src/ros2/rcl_interfaces/builtin_interfaces src/ros2/rosidl_defaults/rosidl_default_generators src/ros2/rosidl_defaults/rosidl_default_runtime src/ros2/unique_identifier_msgs --ignore-src --skip-keys 'rti-connext-dds-5.3.1 ' --rosdistro rolling -y

(from: https://github.com/ros2-rust/ros2_rust/runs/7839025061?check_suite_focus=true#step:10:135)

but not on Windows:

  ++ colcon list --paths-only --packages-up-to examples_rclrs_message_demo
  + package_paths='src\r3ydc6px8z\ros2_rust\examples\message_demo
  src\r3ydc6px8z\ros2_rust\rclrs
  src\r3ydc6px8z\ros2_rust\rclrs_example_msgs
  src\r3ydc6px8z\ros2_rust\rosidl_generator_rs
  src\r3ydc6px8z\ros2_rust\rosidl_runtime_rs
  src\ros2\rosidl_defaults\rosidl_default_generators
  src\ros2\rosidl_defaults\rosidl_default_runtime'
  + rosdep install -r --from-paths 'src\r3ydc6px8z\ros2_rust\examples\message_demo
  ' 'src\r3ydc6px8z\ros2_rust\rclrs
  ' 'src\r3ydc6px8z\ros2_rust\rclrs_example_msgs
  ' 'src\r3ydc6px8z\ros2_rust\rosidl_generator_rs
  ' 'src\r3ydc6px8z\ros2_rust\rosidl_runtime_rs
  ' 'src\ros2\rosidl_defaults\rosidl_default_generators
  ' 'src\ros2\rosidl_defaults\rosidl_default_runtime' --ignore-src --skip-keys 'rti-connext-dds-5.3.1 ' --rosdistro foxy -y
  given path 'src\r3ydc6px8z\ros2_rust\examples\message_demo
  ' does not exist

(from: https://github.com/ros2-rust/ros2_rust/runs/7827723402?check_suite_focus=true#step:11:115)

I think a simple pipe through tr '\n' ' ' after colcon list ... might fix this. Hopefully it works on Windows. I'll try to do this soon.

@nnmm could you try #767? e.g. ros-tooling/action-ros-ci@fix-rosdep-install-trailing-newline-windows

@nnmm note that I think rosdep doesn't work on Windows, though:

@christophebedard Thanks. It looks the same with that branch unfortunately: https://github.com/ros2-rust/ros2_rust/runs/7898904995?check_suite_focus=true

If rosdep doesn't work, is there some way to tell action-ros-ci to skip that step? action-ros-ci is supposed to work with Windows, right?

@nnmm ahh I quickly looked at CI for my PR and thought my fixed worked, but it didn't. I'll try to do a proper fix.

If rosdep doesn't work, is there some way to tell action-ros-ci to skip that step?

We can always add an option to skip rosdep, but it shouldn't make the CI job fail since we're using a trailing || true:

action-ros-ci/src/action-ros-ci.ts

Line 186 in e0eeca0

)}" --rosdistro $DISTRO -y || true`;

. In your case, it seems to be failing at the colcon build step, although I'm not quite sure why it fails.

action-ros-ci is supposed to work with Windows, right?

Not fully, unfortunately, see #725. Windows support has always been partial and finicky.

@christophebedard Have you had a chance to look for a proper fix yet? :)

@nnmm I have not, but since rosdep basically doesn't do anything on Windows currently, that step should just be skipped. I'll try to do that tomorrow.

@nnmm see #773