How to setup imips?

[lassolis]

Hi everyone...
I am using a desktop with Ubuntu 18..
I am trying to run the code, but i wasn't successful till now.
When i run :
setup.py
i get the error ModuleNotFoundError: No module named 'catkin_pkg'
I installed the catkin-pkg module, and i get the same error again.
Is there a requirements.txt available to install all modules necessary for the build?
What steps should i follow to use the code?
And thank you.