$ sudo apt-get update
$ sudo apt-get install hgview-curses 

hgview-curses is installed in your system.

Make ensure the hgview-curses package were installed using the commands given below,

$ sudo dpkg-query -l | grep hgview-curses *

You will get with hgview-curses package name, version, architecture and description in a table

hgview-curses package basic information: