Merge pull request #2157 from fmap/haskell-retry

Added a derivation for Ozgun's's retry (Haskell.)

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

@@ -0,0 +1,15 @@
+{ cabal, dataDefault, liftedBase, monadControl, transformers }:
+
+cabal.mkDerivation (self: {
+  pname = "retry";
+  version = "0.3.0.0";
+  sha256 = "00yjk5784h4w1cckw17w1k5r94acc3ycnprk642ndgggz3lxm36n";
+  buildDepends = [
+    dataDefault liftedBase monadControl transformers
+  ];
+  meta = {
+    description = "Retry combinators for monadic actions that may fail";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})

pkgs/top-level/haskell-packages.nix

@@ -2177,6 +2177,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   resourcet = callPackage ../development/libraries/haskell/resourcet {};
 
+  retry = callPackage ../development/libraries/haskell/retry {};
+
   rethinkdb = callPackage ../development/libraries/haskell/rethinkdb {};
 
   rfc5051 = callPackage ../development/libraries/haskell/rfc5051 {};