Initially I thought I would get install Haskell with couple of commands using apt-get but its seems somehow complex.
As I look at the haskell org download page, I d
$ sudo apt-get install haskell-platform [haskell-platform-doc]
On Debian Jessie, the above will install an outdated Haskell distribution. The latest can still be installed by downloading the "generic" Linux tarball for the Haskell platform.