visual studio – Unable to attach and debug a Python script launched by ROS2

I have Visual Studio 2022 Professional with Python module installed.

If I start a Python script from a console, then open Visual Studio, attach the python.exe process, open the Python file, set a breakpoint, I see the breakpoint correctly setup, it gets reached, execution is stopped and then I can debug the script step by step.

Now, I’m using ROS2 humble. I run ros2 run demo_nodes_py talker, this ends up starting a Python interpreter running <ros folder>\Lib\site-packages\demo_nodes_py\topics\talker.py.

But then, when if attach this Python process in Visual Studio and open the talker.py file, I set a breakpoint, but it remains unresolved by Visual Studio (empty red circle) and execution never gets interrupted.

I added in the script a print of the process ID (os.getpid()) and the file path ((str(Path( __file__ ).absolute())), so I’m sure I attached the good process and opened the good file.

Is there anything in the environment that could make Visual Studio unable to resolve breakpoint and let me debug my app?