Regenerated all Haskell packages with the latest version of cabal2nix.

svn path=/nixpkgs/trunk/; revision=32292

pkgs/development/libraries/haskell/dataenc/default.nix

@@ -1,4 +1,4 @@
-{ cabal }:
+{ cabal, Cabal }:
 
 cabal.mkDerivation (self: {
   pname = "dataenc";
@@ -6,6 +6,7 @@ cabal.mkDerivation (self: {
   sha256 = "1k6k9cpx5ma32gvzf2mdbz4kfiblwfah9875qr13zkl4has9y0pd";
   isLibrary = true;
   isExecutable = true;
+  buildDepends = [ Cabal ];
   meta = {
     homepage = "http://www.haskell.org/haskellwiki/Library/Data_encoding";
     description = "Data encoding library";