Install simplestreams by entering the following commands in the terminal:
sudo apt update sudo apt install simplestreams
Description:
Library and tools for using Simple Streams data
This package provides a client for interacting with simple streams data as is produced to describe Ubuntu's cloud images.
Homepage: http://launchpad.net/simplestreams
Version: 0.1.0~bzr460-0ubuntu1
Section: universe/python