$ sudo apt-get update
$ sudo apt-get install mgltools-dejavu 

mgltools-dejavu is installed in your system.

Make ensure the mgltools-dejavu package were installed using the commands given below,

$ sudo dpkg-query -l | grep mgltools-dejavu *

You will get with mgltools-dejavu package name, version, architecture and description in a table

mgltools-dejavu package basic information: