Bug report

Sourcing the default ROS2 workspace via source /opt/ros/bouncy/setup.bash takes much longer than sourcing a ROS1 workspace. This makes setting it by default in .bashrc uncomfortable.

Required Info:

• Operating System: Ubuntu 18.04
• Installation type: binary
• Version or commit hash: bouncy

Steps to reproduce issue

• install ros-bouncy-desktop
• measure the time it takes to source the default workspace: time source /opt/ros/bouncy/setup.bash

Expected behavior

Sourcing a default ROS1 workspace via time source /opt/ros/melodic/setup.bash is done without noticeable delay (0.1 seconds). It, therefore, can be added to the user's .bashrc to have a source environment with every new terminal.

Actual behavior

In ROS2 sourcing the default workspace takes a considerable amount of time (more than 2 seconds on my PC). Sourcing the default workspace by default in the .bashrc is therefore not an option. On less powerfull devices like the Raspberry Pi, sourcing takes even longer (more than 10 seconds).