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/willow/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, six
+, pillow
+}:
+
+buildPythonPackage rec {
+  pname = "willow";
+  version = "1.4.1";
+  disabled = pythonOlder "2.7";
+
+  src = fetchPypi {
+    pname = "Willow";
+    inherit version;
+    sha256 = "sha256-Dfj/UoUx4AtI1Av3Ltgb6sHcgvLULlu+1K/wIYvvjA0=";
+  };
+
+  propagatedBuildInputs = [ six pillow ];
+
+  # Test data is not included
+  # https://github.com/torchbox/Willow/issues/34
+  doCheck = false;
+
+  meta = with lib; {
+    description = "A Python image library that sits on top of Pillow, Wand and OpenCV";
+    homepage = "https://github.com/torchbox/Willow/";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ desiderius ];
+  };
+
+}