haskell-attempt: added version 0.4.0

svn path=/nixpkgs/trunk/; revision=32176

pkgs/development/libraries/haskell/attempt/0.4.0.nix

@@ -0,0 +1,18 @@
+{ cabal, failure }:
+
+cabal.mkDerivation (self: {
+  pname = "attempt";
+  version = "0.4.0";
+  sha256 = "0n7srd1gy1fa0q1qzizvdgmrc078jyx47115aw85vvl74vh9qyjy";
+  buildDepends = [ failure ];
+  meta = {
+    homepage = "http://github.com/snoyberg/attempt/tree/master";
+    description = "Concrete data type for handling extensible exceptions as failures";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [
+      self.stdenv.lib.maintainers.andres
+      self.stdenv.lib.maintainers.simons
+    ];
+  };
+})