pythonPackages.grappelli_safe: refactor move to pyhton-modules

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

@@ -0,0 +1,34 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  version = "0.3.13";
+  pname = "grappelli_safe";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "8b21b4724bce449cc4f22dc74ed0be9b3e841d968f3271850bf4836864304eb6";
+  };
+
+  meta = with stdenv.lib; {
+    description = "A snapshot of django-grappelli for the Mezzanine CMS";
+    longDescription = ''
+      grappelli_safe was created to provide a snapshot of the
+      Grappelli admin skin for Django, to be referenced as a
+      dependency for the Mezzanine CMS for Django.
+
+      At the time of grappelli_safe's creation, Grappelli was
+      incorrectly packaged on PyPI, and had also dropped compatibility
+      with Django 1.1 - grappelli_safe was therefore created to
+      address these specific issues.
+    '';
+    homepage = https://github.com/stephenmcd/grappelli-safe;
+    downloadPage = http://pypi.python.org/pypi/grappelli_safe/;
+    license = licenses.free;
+    maintainers = with maintainers; [ prikhi ];
+    platforms = platforms.linux;
+  };
+
+}