add zeromq4 and zeromq4-haskell

pkgs/development/libraries/zeromq/4.x.nix

@@ -0,0 +1,18 @@
+{stdenv, fetchurl, libuuid}:
+
+stdenv.mkDerivation rec {
+  name = "zeromq-4.0.4";
+
+  src = fetchurl {
+    url = "http://download.zeromq.org/${name}.tar.gz";
+    sha256 = "1ef71d46e94f33e27dd5a1661ed626cd39be4d2d6967792a275040e34457d399";
+  };
+
+  buildInputs = [ libuuid ];
+
+  meta = {
+    branch = "4";
+    homepage = "http://www.zeromq.org";
+    description = "The Intelligent Transport Layer";
+  };
+}