haskell-generics-sop: re-generate with cabal2nix
haskell-attoparsec: update to version 0.12.1.1
haskell-sloane: update to version 1.9.1
haskell-DAV: update to version 0.8
haskell-GLFW: update to version 0.5.2.2
haskell-MFlow: update to version 0.4.5.7
haskell-Vec: update to version 1.0.5
haskell-auto-update: update to version 0.1.1.0
haskell-cgrep: update to version 6.4.6
haskell-cookie: update to version 0.4.1.3
haskell-hsshellscript: update to version 3.3.2
haskell-network-metrics: update to version 0.4
haskell-pandoc-types: update to version 1.12.4.1
haskell-persistent-template: update to version 1.3.2.1
haskell-statistics: update to version 0.13.2.1
haskell-wai-logger: update to version 2.2.1
haskell-warp: update to version 3.0.0.6
haskell-yesod-bin: update to version 1.2.12.3
haskell-yesod-form: update to version 1.3.15
haskell-ghc-mod: Remove the 'sed' patch; it breaks the module for me (Emacs 24.x, Linux/x86_64).

With that patch applied, ghc-mod's interface to hlint and GHC no longer works.
After removing it, everything behaves just fine again.