$ sudo apt-get update
$ sudo apt-get install libghc-web-routes-happstack-de

libghc-web-routes-happstack-de is installed in your system.

Make ensure the libghc-web-routes-happstack-de package were installed using the commands given below,

$ sudo dpkg-query -l | grep libghc-web-routes-happstack-de*

You will get with libghc-web-routes-happstack-de package name, version, architecture and description in a table

libghc-web-routes-happstack-de package basic information: