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/funcsigs/default.nix

@@ -0,0 +1,28 @@
+{ lib, buildPythonPackage, fetchPypi
+, isPyPy, isPy3k
+}:
+
+buildPythonPackage rec {
+  pname = "funcsigs";
+  version = "1.0.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0l4g5818ffyfmfs1a924811azhjj8ax9xd1cffr1mzd3ycn0zfx7";
+  };
+
+  # https://github.com/testing-cabal/funcsigs/issues/10
+  patches = lib.optional (isPyPy && isPy3k) [ ./fix-pypy3-tests.patch ];
+
+  # requires, unittest2 and package hasn't been maintained since 2013
+  doCheck = false;
+
+  pythonImportsCheck = [ "funcsigs" ];
+
+  meta = with lib; {
+    description = "Python function signatures from PEP362 for Python 2.6, 2.7 and 3.2+";
+    homepage = "https://github.com/aliles/funcsigs";
+    maintainers = with maintainers; [ ];
+    license = licenses.asl20;
+  };
+}