libghc-happstack-hsp-dev software package provides support for using HSP templates in Happstack, 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-happstack-hsp-dev
libghc-happstack-hsp-dev is installed in your system.
Make ensure the libghc-happstack-hsp-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-happstack-hsp-dev *
You will get with libghc-happstack-hsp-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-happstack-hsp-dev |
| Version | 7.3.2-1 |
| Description | support for using HSP templates in Happstack |
| Sub Section | Haskell |