Merge pull request #2255 from jwiegley/timeparsers

The timeparsers library requires convertible == 1.0.*

pkgs/development/libraries/haskell/convertible/1.0.11.1.nix

@@ -0,0 +1,17 @@
+{ cabal, mtl, text, time }:
+
+cabal.mkDerivation (self: {
+  pname = "convertible";
+  version = "1.0.11.1";
+  sha256 = "1r50a2rpfsx0s7dv8ww5xck33b1mhy73gfilffrbqd4hxjgnxlj6";
+  isLibrary = true;
+  isExecutable = true;
+  buildDepends = [ mtl text time ];
+  meta = {
+    homepage = "http://hackage.haskell.org/cgi-bin/hackage-scripts/package/convertible";
+    description = "Typeclasses and instances for converting between types";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+    maintainers = [ self.stdenv.lib.maintainers.andres ];
+  };
+})