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/yangson/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools-scm
+, pyxb
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "yangson";
+  version = "1.4.13";
+  format = "setuptools";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-SuKpSwIjZioyqmxlcKJ+UXP+ADfJwUwCCttmMAiEkZ4=";
+  };
+
+  nativeBuildInputs = [
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    pyxb
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "yangson"
+  ];
+
+  meta = with lib; {
+    description = "Library for working with data modelled in YANG";
+    homepage = "https://github.com/CZ-NIC/yangson";
+    license = with licenses; [
+      gpl3Plus
+      lgpl3Plus
+    ];
+    maintainers = with maintainers; [ hexa ];
+  };
+}