libghc-intervals-dev software package provides Haskell data type for intervals, 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-intervals-dev
libghc-intervals-dev is installed in your system.
Make ensure the libghc-intervals-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libghc-intervals-dev *
You will get with libghc-intervals-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Haskell |
| Package | libghc-intervals-dev |
| Version | 0.7-1+b3 [amd64, armel, armhf, |
| Description | Haskell data type for intervals |
| Sub Section | Haskell |