zc_buildout_nix: update to 2.2.1
adding zc_buildout 2.2.1
Pillow: update to 2.2.1
haskell: Propagate cabal dependencies to user env

Before this commit, if a haskell library X depends on Y, and X was added to
systemPackages, only X would be available in the user environment. Y
would not be avialable, which causes X to be broken. This commit solves
the issue by setting propagatedUserEnvPkgs to all packages X depends
on when X is a library.
alex: update to version 3.1.2
haskell-ekg: add version 0.3.1.3
haskell-gloss-accelerate: add version 1.8.0.0
haskell-gloss-raster-accelerate: add version 1.8.0.0
happy: update to version 1.19.1
haskell-HTTP: add version 4000.2.9
haskell-git-annex: update to version 5.20131120
haskell-MonadCatchIO-transformers: update to version 0.3.1.0
haskell-accelerate-cuda: update to version 0.14.0.0
haskell-accelerate-examples: update to version 0.14.0.0
haskell-accelerate-fft: update to version 0.14.0.0
haskell-accelerate-io: update to version 0.14.0.0
haskell-accelerate: update to version 0.14.0.0
haskell-blaze-builder: update to version 0.3.3.0
haskell-conduit: update to version 1.0.9.1
haskell-cuda: update to version 0.5.1.1