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/testtools/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonRelaxDepsHook
+, pbr
+, python-mimeparse
+, extras
+, unittest2
+, traceback2
+, testscenarios
+}:
+
+buildPythonPackage rec {
+  pname = "testtools";
+  version = "2.5.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "57c13433d94f9ffde3be6534177d10fb0c1507cc499319128958ca91a65cb23f";
+  };
+
+  propagatedBuildInputs = [ pbr python-mimeparse extras ];
+  buildInputs = [ traceback2 ];
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
+
+  # testscenarios has a circular dependency on testtools
+  doCheck = false;
+  checkInputs = [ testscenarios ];
+
+  pythonRemoveDeps = [ "fixtures" ];
+
+  meta = {
+    description = "A set of extensions to the Python standard library's unit testing framework";
+    homepage = "https://pypi.python.org/pypi/testtools";
+    license = lib.licenses.mit;
+  };
+}