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/python2-modules/mock/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, isPy27
+, funcsigs
+, six
+, pbr
+, python
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "mock";
+  version = "3.0.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "83657d894c90d5681d62155c82bda9c1187827525880eda8ff5df4ec813437c3";
+  };
+
+  propagatedBuildInputs = [ six pbr ] ++ lib.optionals isPy27 [ funcsigs ];
+
+  # On PyPy for Python 2.7 in particular, Mock's tests have a known failure.
+  # Mock upstream has a decoration to disable the failing test and make
+  # everything pass, but it is not yet released. The commit:
+  # https://github.com/testing-cabal/mock/commit/73bfd51b7185#diff-354f30a63fb0907d4ad57269548329e3L12
+  #doCheck = !(python.isPyPy && python.isPy27);
+  doCheck = false; # Infinite recursion pytest
+
+  checkPhase = ''
+    ${python.interpreter} -m unittest discover
+  '';
+
+  checkInputs = [
+    pytest
+  ];
+
+  meta = with lib; {
+    description = "Mock objects for Python";
+    homepage = "http://python-mock.sourceforge.net/";
+    license = licenses.bsd2;
+  };
+
+}