pythonPackages.umemcache: move expression out of python-packages.nix

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

@@ -0,0 +1,20 @@
+{ stdenv, buildPythonPackage, isPy3k, fetchurl }:
+
+buildPythonPackage rec {
+  name = "umemcache-${version}";
+  version = "1.6.3";
+  disabled = isPy3k;
+
+  src = fetchurl {
+    url = "mirror://pypi/u/umemcache/${name}.zip";
+    sha256 = "211031a03576b7796bf277dbc9c9e3e754ba066bbb7fb601ab5c6291b8ec1918";
+  };
+
+  hardeningDisable = [ "format" ];
+
+  meta = with stdenv.lib; {
+    description = "Ultra fast memcache client written in highly optimized C++ with Python bindings";
+    homepage = https://github.com/esnme/ultramemcache;
+    license = licenses.bsdOriginal;
+  };
+}

pkgs/top-level/python-packages.nix

@@ -23658,24 +23658,7 @@ in {
 
   };
 
-  umemcache = buildPythonPackage rec {
+  umemcache = callPackage ../development/python-modules/umemcache {};
-    name = "umemcache-${version}";
-    version = "1.6.3";
-    disabled = isPy3k;
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/u/umemcache/${name}.zip";
-      sha256 = "211031a03576b7796bf277dbc9c9e3e754ba066bbb7fb601ab5c6291b8ec1918";
-    };
-
-    hardeningDisable = [ "format" ];
-
-    meta = {
-      description = "Ultra fast memcache client written in highly optimized C++ with Python bindings";
-      homepage = https://github.com/esnme/ultramemcache;
-      license = licenses.bsdOriginal;
-    };
-  };
 
   unicodecsv = buildPythonPackage rec {
     version = "0.14.1";