Rosidl empy 4.0 is incompatible

[kasperg3]

ros2/rosidl#779

The container will not build due to an error in empy which ros2 uses.

Either wait for a fix in ros2 or use a static version of empy in the dockerfile.
Potential fix:
pip install empy==3.3.4 . . .

[kasperg3]

Fixed in the latest release

[UltraHertzz]

it seems that in empy==4.0.x still have the question, reinstall empy==3.3.4 will fix the problem

[kasperg3]

We have build a new docker image which the devcontainer now uses. It has been fixed here:

vscode_ros2_px4_workspace/px4/humble.Dockerfile

Line 17 in 4522f5e

RUN pip3 install -U empy==3.3.4 pyros-genmsg setuptools

Let me know if you run into any problems using the dev container.