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/pykmtronic/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, aiohttp
+, buildPythonPackage
+, fetchPypi
+, lxml
+}:
+
+buildPythonPackage rec {
+  pname = "pykmtronic";
+  version = "0.3.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-8qLyBJp7C93x0PWbgDAtNEDJ5VLNfwZ3DRZfudRCBgo=";
+  };
+
+  propagatedBuildInputs = [ aiohttp lxml ];
+
+  # Project has no tests
+  doCheck = false;
+  pythonImportsCheck = [ "pykmtronic" ];
+
+  meta = with lib; {
+    description = "Python client to interface with KM-Tronic web relays";
+    homepage = "https://github.com/dgomes/pykmtronic";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}