$ sudo apt-get update
$ sudo apt-get install partman-basicmethods 

partman-basicmethods is installed in your system.

Make ensure the partman-basicmethods package were installed using the commands given below,

$ sudo dpkg-query -l | grep partman-basicmethods *

You will get with partman-basicmethods package name, version, architecture and description in a table

partman-basicmethods package basic information: