diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index e14524c061d..3031495295f 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -116,37 +116,37 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   # GHC version, change the "preferences function" for that GHC version
   # in haskell-defaults.nix.
 
-  # NOTE: 2011.4.0.0 is the current default.
+  # NOTE: 2012.2.0.0 is the current default.
 
   haskellPlatformArgs_future = self : {
     inherit (self) cabal ghc;
-    cgi          = self.cgi_3001_1_7_4;         # 7.4.2 ok
-    fgl          = self.fgl_5_4_2_4;            # 7.4.2 ok
-    GLUT         = self.GLUT_2_1_2_1;           # 7.4.2 ok
-    haskellSrc   = self.haskellSrc_1_0_1_5;     # 7.4.2 ok
-    html         = self.html_1_0_1_2;           # 7.4.2 ok
-    HTTP         = self.HTTP_4000_2_3;          # 7.4.2 ok
-    HUnit        = self.HUnit_1_2_4_3;          # 7.4.2 ok
-    mtl          = self.mtl_2_1_2;              # 7.4.2 ok
-    network      = self.network_2_3_0_14;       # 7.4.2 ok
-    OpenGL       = self.OpenGL_2_2_3_1;         # 7.4.2 ok
-    parallel     = self.parallel_3_2_0_2;       # 7.4.2 ok
-    parsec       = self.parsec_3_1_3;           # 7.4.2 ok
-    QuickCheck   = self.QuickCheck_2_5;         # 7.4.2 ok
-    random       = self.random_1_0_1_1;         # 7.4.2 ok
-    regexBase    = self.regexBase_0_93_2;       # 7.4.2 ok
-    regexCompat  = self.regexCompat_0_95_1;     # 7.4.2 ok
-    regexPosix   = self.regexPosix_0_95_1;      # 7.4.2 ok
-    stm          = self.stm_2_3;                # 7.4.2 ok
-    syb          = self.syb_0_3_6_2;            # 7.4.2 ok
-    text         = self.text_0_11_2_2;          # 7.4.2 ok
-    transformers = self.transformers_0_3_0_0;   # 7.4.2 ok
-    xhtml        = self.xhtml_3000_2_1;         # 7.4.2 ok
-    zlib         = self.zlib_0_5_3_3;           # 7.4.2 ok
-    cabalInstall = self.cabalInstall_0_14_0;    # 7.4.2 ok
-    alex         = self.alex_3_0_1;             # 7.4.2 ok
-    haddock      = self.haddock_2_10_0;         # 7.4.2 ok
-    happy        = self.happy_1_18_9;           # 7.4.2 ok
+    cgi          = self.cgi_3001_1_7_4;         # 7.5 fail
+    fgl          = self.fgl_5_4_2_4;            # 7.5 ok
+    GLUT         = self.GLUT_2_1_2_1;           # 7.5 fail
+    haskellSrc   = self.haskellSrc_1_0_1_5;     # 7.5 ok
+    html         = self.html_1_0_1_2;           # 7.5 ok
+    HTTP         = self.HTTP_4000_2_3;          # 7.5 ok
+    HUnit        = self.HUnit_1_2_4_3;          # 7.5 ok
+    mtl          = self.mtl_2_1_2;              # 7.5 ok
+    network      = self.network_2_3_0_14;       # 7.5 ok
+    OpenGL       = self.OpenGL_2_2_3_1;         # 7.5 fail
+    parallel     = self.parallel_3_2_0_2;       # 7.5 fail
+    parsec       = self.parsec_3_1_3;           # 7.5 ok
+    QuickCheck   = self.QuickCheck_2_5;         # 7.5 fail
+    random       = self.random_1_0_1_1;         # 7.5 ok
+    regexBase    = self.regexBase_0_93_2;       # 7.5 ok
+    regexCompat  = self.regexCompat_0_95_1;     # 7.5 fail
+    regexPosix   = self.regexPosix_0_95_1;      # 7.5 fail
+    stm          = self.stm_2_3;                # 7.5 ok
+    syb          = self.syb_0_3_6_2;            # 7.5 ok
+    text         = self.text_0_11_2_2;          # 7.5 ok
+    transformers = self.transformers_0_3_0_0;   # 7.5 ok
+    xhtml        = self.xhtml_3000_2_1;         # 7.5 ok
+    zlib         = self.zlib_0_5_3_3;           # 7.5 fail
+    cabalInstall = self.cabalInstall_0_14_0;    # 7.5 ok
+    alex         = self.alex_3_0_1;             # 7.5 ok
+    haddock      = self.haddock_2_10_0;         # 7.5 ok
+    happy        = self.happy_1_18_9;           # 7.5 ok
   };
 
   haskellPlatformArgs_2012_2_0_0 = self : {