ghc6 software package provides transitional dummy package, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ghc6
ghc6 is installed in your system.
Make ensure the ghc6 package were installed using the commands given below,
$ sudo dpkg-query -l | grep ghc6 *
You will get with ghc6 package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Development |
| Package | ghc6 |
| Version | 7.4.1-1ubuntu2 |
| Description | transitional dummy package |
| Sub Section | devel |