$ sudo apt-get update
$ sudo apt-get install haskell-devscripts 

haskell-devscripts is installed in your system.

Make ensure the haskell-devscripts package were installed using the commands given below,

$ sudo dpkg-query -l | grep haskell-devscripts *

You will get with haskell-devscripts package name, version, architecture and description in a table

haskell-devscripts package basic information: