uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

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

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  version = "1.1.1";
+  pname = "grappelli_safe";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "ee34b3e2a3711498b1f8da3d9daa8a1239efdf255a212181742b6a5890fac039";
+  };
+
+  meta = with 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.unix;
+  };
+
+}