libghc-cmdargs-dev software package provides command-line argument processing, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libghc-cmdargs-dev
libghc-cmdargs-dev is installed in your system.
Make ensure the libghc-cmdargs-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-cmdargs-dev *
You will get with libghc-cmdargs-dev package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Haskell |
| Package | libghc-cmdargs-dev |
| Version | 0.10.13-4 |
| Description | command-line argument processing |
| Sub Section | Haskell |