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/pyfribidi/default.nix

@@ -0,0 +1,30 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, fetchPypi
+, isPyPy
+, six
+}:
+
+buildPythonPackage rec {
+  version = "0.12.0";
+  pname = "pyfribidi";
+  disabled = isPyPy;
+
+  src = fetchPypi {
+    inherit pname version;
+    extension = "zip";
+    sha256 = "64726a4a56783acdc79c6b9b3a15f16e6071077c897a0b999f3b43f744bc621c";
+  };
+
+  patches = lib.optional stdenv.cc.isClang ./pyfribidi-clang.patch;
+
+  propagatedBuildInputs = [ six ];
+
+  meta = with lib; {
+    description = "A simple wrapper around fribidi";
+    homepage = "https://github.com/pediapress/pyfribidi";
+    license = licenses.gpl2;
+  };
+
+}

pkgs/development/python-modules/pyfribidi/pyfribidi-clang.patch

@@ -0,0 +1,17 @@
+diff --git a/pyfribidi.c b/pyfribidi.c
+index 9a0120d..238134a 100644
+--- a/pyfribidi.c
++++ b/pyfribidi.c
+@@ -148,10 +148,11 @@ init_pyfribidi (void)
+ {
+ #if PY_MAJOR_VERSION >= 3
+         PyObject *module = PyModule_Create (&pyfribidi_moduledef);
++        if (module == NULL) return NULL;
+ #else
+         PyObject *module = Py_InitModule ("_pyfribidi", PyfribidiMethods);
++        if (module == NULL) return;
+ #endif
+-	if (module == NULL) return NULL;
+ 
+ 	PyModule_AddIntConstant (module, "RTL", (long) FRIBIDI_TYPE_RTL);
+ 	PyModule_AddIntConstant (module, "LTR", (long) FRIBIDI_TYPE_LTR);