diff -ru orig/haskell-packages.cabal new/haskell-packages.cabal
--- orig/haskell-packages.cabal	2014-02-20 12:04:23.945608732 +0200
+++ new/haskell-packages.cabal	2014-02-20 12:04:23.000000000 +0200
@@ -48,6 +48,6 @@
     , containers
     , mtl >= 2.1
     , hse-cpp
-    , EitherT
+    , either
     , haskell-src-exts >= 1.14
     , tagged

Drop usage of EitherT in haskell-packages
Drop usage of EitherT in haskell-packages
