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/sepaxml/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, lxml
+, pytestCheckHook
+, text-unidecode
+, xmlschema
+}:
+
+buildPythonPackage rec {
+  pname = "sepaxml";
+  version = "2.5.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "raphaelm";
+    repo = "python-sepaxml";
+    rev = version;
+    hash = "sha256-9gPUAZ60q5o11eAnkzTBrFCpBUGxw3MGuKY4MtPxoSA=";
+  };
+
+  propagatedBuildInputs = [
+    text-unidecode
+    xmlschema
+  ];
+
+  checkInputs = [
+    lxml
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "sepaxml"
+  ];
+
+  meta = with lib; {
+    description = "SEPA Direct Debit XML generation in python";
+    homepage = "https://github.com/raphaelm/python-sepaxml/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ elohmeier ];
+  };
+}