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/robotsuite/default.nix

@@ -0,0 +1,27 @@
+{ lib, buildPythonPackage, fetchPypi
+, unittest2, lxml, robotframework
+}:
+
+buildPythonPackage rec {
+  pname = "robotsuite";
+  version = "2.2.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "8764e01990ac6774e0c983579bcb9cb79f44373a61ad47fbae9a1dc7eedbdd61";
+  };
+
+  buildInputs = [ unittest2 ];
+  propagatedBuildInputs = [ robotframework lxml ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace robotframework-python3 robotframework
+  '';
+
+  meta = with lib; {
+    description = "Python unittest test suite for Robot Framework";
+    homepage = "https://github.com/collective/robotsuite/";
+    license = licenses.gpl3;
+  };
+}