ROS2 launch.py, execute node on actual terminal [closed]

edit

I am writing a ros2 launch file for a Python node that draws on terminal with curses - namely key_teleop. The node runs just fine with ros2 run but crashes when going through ros2 launch. The launch file is kept to the minimum,

import os  
from launch import LaunchDescription  
import launch_ros.actions  

def generate_launch_description():
    proc_env = os.environ.copy()
    proc_env['PYTHONUNBUFFERED'] = '1'

    return LaunchDescription([launch_ros.actions.Node(
        package='key_teleop', node_executable='key_teleop',
        env=proc_env)])

Is there anything in the launch framework that would prevent the node from accessing the terminal ?
Is there some parameters, handler or whatnot to define / set up for my application to run smoothly ?

The error, while I don't expect it to be very helpful, is the following:

Traceback (most recent call last):
 File "/usr/lib/python3.6/curses/__init__.py", line 78, in wrapper
   cbreak()
_curses.error: cbreak() returned ERR

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
 File "/usr/lib/python3.6/curses/__init__.py", line 100, in wrapper
   nocbreak()
_curses.error: nocbreak() returned ERR

Edit:

After some reading, curses requires a full blown terminal application which launch most likely does not offer. One could launch a terminal from the launch file to execute the script but that sounds awful. E.g. with launch-prefix="gnome-terminal --command".

This so answer suggests using pyte.