libghc-hashtables-dev software package provides mutable hash tables, 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-hashtables-dev
libghc-hashtables-dev is installed in your system.
Make ensure the libghc-hashtables-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-hashtables-dev *
You will get with libghc-hashtables-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-hashtables-dev |
| Version | 1.0.1.8-2+b2 [amd64, i386, pow |
| Description | mutable hash tables |
| Sub Section | Haskell |