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/gflags/default.nix

@@ -0,0 +1,27 @@
+{ lib, buildPythonPackage, fetchPypi, six, pytest }:
+
+buildPythonPackage rec {
+  version = "3.1.2";
+  pname = "python-gflags";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "40ae131e899ef68e9e14aa53ca063839c34f6a168afe622217b5b875492a1ee2";
+  };
+
+  checkInputs = [ pytest ];
+
+  propagatedBuildInputs = [ six ];
+
+  checkPhase = ''
+    # clashes with our pythhon wrapper (which is in argv0)
+    # AssertionError: 'gflags._helpers_test' != 'nix_run_setup.py'
+    py.test -k 'not testGetCallingModule'
+  '';
+
+  meta = {
+    homepage = "https://github.com/google/python-gflags";
+    description = "A module for command line handling, similar to Google's gflags for C++";
+    license = lib.licenses.bsd3;
+  };
+}