helium software package provides compiler used for learning the programming language Haskell, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install helium
helium is installed in your system.
Make ensure the helium package were installed using the commands given below,
$ sudo dpkg-query -l | grep helium *
You will get with helium package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Development |
| Package | helium |
| Version | 1.7~pre20090428-3.1 |
| Description | compiler used for learning the programming language Haskell |
| Sub Section | devel |