diff --git a/pkgs/development/python-modules/gmpy/default.nix b/pkgs/development/python-modules/gmpy/default.nix
new file mode 100644
index 000000000000..81af4b5e5501
--- /dev/null
+++ b/pkgs/development/python-modules/gmpy/default.nix
@@ -0,0 +1,24 @@
+{ buildPythonPackage, fetchurl, isPyPy, gmp } :
+
+let
+  pname = "gmpy";
+  version = "1.17";
+in
+
+buildPythonPackage {
+  inherit pname version;
+
+  disabled = isPyPy;
+
+  src = fetchurl {
+    url = "mirror://pypi/g/gmpy/${pname}-${version}.zip";
+    sha256 = "1a79118a5332b40aba6aa24b051ead3a31b9b3b9642288934da754515da8fa14";
+  };
+
+  buildInputs = [ gmp ];
+
+  meta = {
+    description = "GMP or MPIR interface to Python 2.4+ and 3.x";
+    homepage = http://code.google.com/p/gmpy/;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d962649f71b4..c77cd8b64947 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2624,25 +2624,7 @@ in {
 
   GeoIP = callPackage ../development/python-modules/GeoIP { };
 
-  gmpy = buildPythonPackage rec {
-    name = "gmpy-1.17";
-    disabled = isPyPy;
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/g/gmpy/${name}.zip";
-      sha256 = "1a79118a5332b40aba6aa24b051ead3a31b9b3b9642288934da754515da8fa14";
-    };
-
-    buildInputs = [
-      pkgs.gcc
-      pkgs.gmp
-    ];
-
-    meta = {
-      description = "GMP or MPIR interface to Python 2.4+ and 3.x";
-      homepage = http://code.google.com/p/gmpy/;
-    };
-  };
+  gmpy = callPackage ../development/python-modules/gmpy { };
 
   gmpy2 = buildPythonPackage rec {
     name = "gmpy2-2.0.6";