haskell-ghc-mod: update to version 4.0.0
haskell-shakespeare-css: update to version 1.0.7.4
haskell-snap-server: update to version 0.9.4.2
haskell-unix-bytestring: update to version 0.3.7.2
haskell-cabal2nix: update to version 1.61
haskell-bytestring-show: update to version 0.3.5.6