libghc-classy-prelude-dev software package provides typeclass-based prelude, 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-classy-prelude-dev
libghc-classy-prelude-dev is installed in your system.
Make ensure the libghc-classy-prelude-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-classy-prelude-dev *
You will get with libghc-classy-prelude-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-classy-prelude-dev |
| Version | 0.9.3-1+b2 [amd64, armel, armh |
| Description | typeclass-based prelude |
| Sub Section | Haskell |