cl-irc software package provides Common Lisp Internet Relay Chat Library, 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 cl-irc
cl-irc is installed in your system.
Make ensure the cl-irc package were installed using the commands given below,
$ sudo dpkg-query -l | grep cl-irc *
You will get with cl-irc package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | cl-irc |
| Version | 1:0.9.2+dfsg1-1 |
| Description | Common Lisp Internet Relay Chat Library |
| Sub Section | Devel |