Add python3-colorama dependency

[penww]

Description

Fix CI issue for ros2/ros2cli#1248. In that PR, we added color support for ros2cli, python3-colorama is used for cross-platform colored terminal output.

Did you use Generative AI?

No.

Additional Information

https://pypi.org/project/colorama/

[knmcguire]

Hi! I don't think it is a good idea to add dependencies of actual ros packages here, and these should only be dependencies to support CI as a whole I believe.

Have you tried adding python3-colorama to rosdep?

(let me double check this internally as well, as I see in the console that rosdep is not even called indeed)

[clalancette]

Have you tried adding python3-colorama to rosdep?

That's already done: https://github.com/ros/rosdistro/blob/2667056d0320bb77edf1e28fec13d56aa8d325e2/rosdep/python.yaml#L3476

But unfortunately, CI here does not use rosdep at all. I tried to introduce it a few years ago, but it would basically require completely rewriting how the CI scripts work. So I abandoned it then. I think this is the best we can do for now.

Note that this will also require adding in python3-colorama to https://github.com/ros2/ros2/blob/rolling/pixi.toml for Windows.

[knmcguire]

ahh yes thanks @clalancette for clarifying. I looked at the base.yaml file, that's why I missed it.

And indeed, pixi.toml addition needs to be done as well (colorama is on conda-forge). We should be able to use version 0.4.6 for this to match Ubuntu 26.04

[penww]

@clalancette @knmcguire Thanks for your review and feedback, have added PR for Windows in pixi.toml: ros2/ros2#1857.

Please help to review again.

[knmcguire]

I had to make a port of your branch for here for me to test it out in CI.

Linux:
Linux-rhel:
Linux-Aarch64:

Windows CI run with pixi is running in the other PR