I've got a Cubieboard a few weeks back. I started it off with Linaro (Ubuntu) 12.06.
Today I started to upgrade the OS to 12.11, which surprisingly came with ghc 7.4.2.
And ghci magically works too.
Here are the links
sudo apt-get install update-manager-corecheck /etc/update-manager/release-upgrades and update
sudo apt-get update
sudo apt-get upgrade