libghc-websockets-dev software package provides write WebSocket-capable servers, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libghc-websockets-dev
libghc-websockets-dev is installed in your system.
Make ensure the libghc-websockets-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-websockets-dev *
You will get with libghc-websockets-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Haskell |
| Package | libghc-websockets-dev |
| Version | 0.8.1.1-1 |
| Description | write WebSocket-capable servers |
| Sub Section | Haskell |