libghc-taffybar-dev software package provides desktop bar extensible in Haskell, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libghc-taffybar-dev
libghc-taffybar-dev is installed in your system.
Make ensure the libghc-taffybar-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-taffybar-dev *
You will get with libghc-taffybar-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-taffybar-dev |
| Version | 0.2.1-1+b16 [amd64], 0.2.1-1+b |
| Description | desktop bar extensible in Haskell |
| Sub Section | Haskell |