$ sudo apt-get update
$ sudo apt-get install libncurses-gst 

libncurses-gst is installed in your system.

Make ensure the libncurses-gst package were installed using the commands given below,

$ sudo dpkg-query -l | grep libncurses-gst *

You will get with libncurses-gst package name, version, architecture and description in a table

libncurses-gst package basic information: