一、Could not find a package configuration file provided by “catkin_virtualenv”
解决办法：
sudo apt install ros-noetic-catkin-virtualenv
二、
ERROR: Could not find a version that satisfies the requirement pip-tools5.1.2 (from versions: none)
ERROR: No matching distribution found for pip-tools5.1.2
解决办法：
pip install pip-tools==5.1.2
三、ERROR: launchpadlib 1.10.13 requires testresources, which is not installed.
解决办法：
python3：
sudo apt install python3-testresources
python2:
sudo apt install python-testresources
)
)
)
