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/py3exiv2/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, stdenv
+, boost
+, buildPythonPackage
+, exiv2
+, fetchPypi
+, libcxx
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "py3exiv2";
+  version = "0.11.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    hash = "sha256-ZgDaa4lxmdTaZhkblgRfPMxfVwENp2s6xdKSuD/MqEQ=";
+  };
+
+  buildInputs = [
+    boost
+    exiv2
+  ];
+
+  # Work around Python distutils compiling C++ with $CC (see issue #26709)
+  NIX_CFLAGS_COMPILE = lib.optionalString stdenv.isDarwin [
+    "-I${lib.getDev libcxx}/include/c++/v1"
+  ];
+
+  pythonImportsCheck = [
+    "pyexiv2"
+  ];
+
+  # Tests are not shipped
+  doCheck = false;
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    description = "Python binding to the library exiv2";
+    homepage = "https://launchpad.net/py3exiv2";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ vinymeuh ];
+    platforms = with platforms; linux ++ darwin;
+  };
+}