Added two Haskell packages.

svn path=/nixpkgs/trunk/; revision=15562

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

@@ -0,0 +1,11 @@
+{cabal}:
+
+cabal.mkDerivation (self : {
+  pname = "emgm";
+  version = "0.3.1";
+  sha256 = "956923ec4d51f111ca6091ebccf75a1f6b99d7a173ea673cbb4787bf08f497a8";
+  meta = {
+    description = "Extensible and Modular Generics for the Masses";
+  };
+})  
+

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

@@ -0,0 +1,12 @@
+{cabal, multirec}:
+
+cabal.mkDerivation (self : {
+  pname = "zipper";
+  version = "0.1";
+  sha256 = "aa4d45692be1a54ebe4bd0df9577a09d95692930494103c2ee89dfce7af818eb";
+  propagatedBuildInputs = [multirec];
+  meta = {
+    description = "Generic zipper for systems of recursive datatypes";
+  };
+})  
+

pkgs/top-level/haskell-packages.nix

@@ -55,6 +55,10 @@ rec {
     inherit cabal;
   };
 
+  emgm = import ../development/libraries/haskell/emgm {
+    inherit cabal;
+  };
+
   extensibleExceptions = import ../development/libraries/haskell/extensible-exceptions {
     inherit cabal;
   };
@@ -307,6 +311,10 @@ rec {
     inherit cabal;
   };
 
+  zipper = import ../development/libraries/haskell/zipper {
+    inherit cabal multirec;
+  };
+
   zlib = import ../development/libraries/haskell/zlib {
     inherit cabal;
     inherit (pkgs) zlib;