On ArchLinux (yes, this OS is better, just look how simple it is !) :
1. Install
catalyst and
amdstream from the AUR.
2. Install python2-pyopencl from the official packages and
python2-jsonrpc-svn from the AUR.
3. Run your miner.
And Ubuntu is supposed to be noob-friendly ? I can't believe it ! Never mind the fact that the "Ubuntu-way" is a real pain to keep updated too.
Archlinux is quite a bit harder to install and in fact requires FAR more steps to get to the point where you can install the catalyst drivers, amdstream and python. You even have to install X manually.
There's a place for Archlinux and it's a good distro... but as a simple to setup mining solution? It's about as far away as you can get. I can't believe you even posted this, it's such a complete bag of BS and an outright lie.