haskell-MonadRandom: add version 0.2

We cannot use it anywhere except HEAD, unfortunately, because the
package depends on transformers 0.4.x, which is a core package and
cannot be updated.

pkgs/development/libraries/haskell/MonadRandom/0.2.nix

@@ -0,0 +1,15 @@
+# This file was auto-generated by cabal2nix. Please do NOT edit manually!
+
+{ cabal, mtl, random, transformers }:
+
+cabal.mkDerivation (self: {
+  pname = "MonadRandom";
+  version = "0.2";
+  sha256 = "0wxn1n47mx7npxzc6iv2hj3ikj3d0s11xsndz2gfm9y5pwm3h44c";
+  buildDepends = [ mtl random transformers ];
+  meta = {
+    description = "Random-number generation monad";
+    license = "unknown";
+    platforms = self.ghc.meta.platforms;
+  };
+})