What's this about? The eventual goal is to have automatic, nightly builds of GHC, using a combination of Launchpad's code importing and build recipe support. However, due to three outstanding Launchpad bugs (#904683, #402814, #1084403), not all of the source repositories are managing to import, so this plan has been put on ice for now.

In the meantime, you may be interested in this PPA: https://launchpad.net/~hvr/+archive/ghc