gmpy2: 2.0.6 -> 2.0.8

Also move outside python-packages.nix

pkgs/development/python-modules/gmpy2/default.nix

@@ -0,0 +1,25 @@
+{ stdenv, buildPythonPackage, fetchurl, isPyPy, gmp, mpfr, libmpc } :
+
+let
+  pname = "gmpy2";
+  version = "2.0.8";
+in
+
+buildPythonPackage {
+  inherit pname version;
+
+  disabled = isPyPy;
+
+  src = fetchurl {
+    url = "mirror://pypi/g/gmpy2/${pname}-${version}.zip";
+    sha256 = "0grx6zmi99iaslm07w6c2aqpnmbkgrxcqjrqpfq223xri0r3w8yx";
+  };
+
+  buildInputs = [ gmp mpfr libmpc ];
+
+  meta = with stdenv.lib; {
+    description = "GMP/MPIR, MPFR, and MPC interface to Python 2.6+ and 3.x";
+    homepage = http://code.google.com/p/gmpy/;
+    license = licenses.gpl3Plus;
+  };
+}