haskell-platform & GHC out-of-sync & versioning
The haskell platform http://
haskell-platform (2012.1.0.0) (precise) seems to specify the versions of http://
Also haskell-platform (2012.2.0.0) (quantal) seems to specify versions greater than the official Haskell platform.
I believe that the versions of this package should reflect precisely the same set of Haskell packages, as those versions of the official Haskell platform do.
With Haskell you can stick with the platform (stable) or upgrade to the latest version of a package. Ubuntu does not need to make its own selection -- or if it does -- don't call it "The haskell platform".