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/marshmallow-sqlalchemy/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchPypi
+, marshmallow
+, sqlalchemy
+, pytest-lazy-fixture
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "marshmallow-sqlalchemy";
+  version = "0.28.0";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-+2sGaG84/sLqDsU6XuSXkhlAnisiYPm8keS0MQXRl4I=";
+  };
+
+  propagatedBuildInputs = [
+    marshmallow
+    sqlalchemy
+  ];
+
+  pythonImportsCheck = [
+    "marshmallow_sqlalchemy"
+  ];
+
+  checkInputs = [
+    pytest-lazy-fixture
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/marshmallow-code/marshmallow-sqlalchemy";
+    description = "SQLAlchemy integration with marshmallow";
+    license = licenses.mit;
+  };
+
+}