Haskell packages brainfuck and unlambda have been fixed upstream.

pkgs/development/haskell-modules/brainfuck-fix-ghc710.patch

@@ -1,19 +0,0 @@
-diff -ru3 brainfuck-0.1-old/Language/Brainfuck.hs brainfuck-0.1/Language/Brainfuck.hs
---- brainfuck-0.1-old/Language/Brainfuck.hs	2015-04-17 21:17:34.568721144 +0300
-+++ brainfuck-0.1/Language/Brainfuck.hs	2015-04-17 21:19:17.065872395 +0300
-@@ -19,6 +19,8 @@
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA -}
- 
-+{-# LANGUAGE FlexibleContexts #-}
-+
- module Language.Brainfuck where
- 
- import Data.Array.IO
-@@ -287,4 +289,4 @@
- 
- halt = if debug
-          then putStrLn "Machine Halted.\n"
--         else putStrLn "\n"
-\ No newline at end of file
-+         else putStrLn "\n"

pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix

@@ -181,10 +181,6 @@ self: super: {
             in addBuildDepends jsaddle' [ self.glib self.gtk3 self.webkitgtk3
                                           self.webkitgtk3-javascriptcore ];
 
-  # FIXME: remove with the next Hackage update
-  brainfuck = appendPatch super.brainfuck ./brainfuck-fix-ghc710.patch;
-  unlambda = appendPatch super.unlambda ./unlambda-fix-ghc710.patch;
-
   # https://github.com/BNFC/bnfc/issues/137
   BNFC = markBrokenVersion "2.7.1" super.BNFC;
   cubical = dontDistribute super.cubical;

pkgs/development/haskell-modules/unlambda-fix-ghc710.patch

@@ -1,28 +0,0 @@
-diff -ru3 unlambda-0.1.3-old/Language/Unlambda.hs unlambda-0.1.3/Language/Unlambda.hs
---- unlambda-0.1.3-old/Language/Unlambda.hs	2015-04-17 21:16:32.415751612 +0300
-+++ unlambda-0.1.3/Language/Unlambda.hs	2015-04-17 21:25:38.210123501 +0300
-@@ -29,6 +29,7 @@
- import Prelude hiding(catch)
- #endif
- import Control.Exception (catch, IOException)
-+import Control.Monad (liftM, ap)
- 
- ------------------------------------------------------------------------
- -- Abstract syntax
-@@ -85,6 +86,16 @@
- 
- type Cont a = (Maybe Char, Int) -> a -> IO Exp
- 
-+instance Functor Eval where
-+
-+  fmap = liftM
-+
-+instance Applicative Eval where
-+
-+  pure = return
-+
-+  (<*>) = ap
-+
- instance Monad Eval where
- 
-   (Eval cp1) >>= f = Eval $ \dat1 cont2 ->