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/hexbytes/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, eth-utils
+, hypothesis
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "hexbytes";
+  version = "0.2.2";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "ethereum";
+    repo = "hexbytes";
+    rev = "v${version}";
+    sha256 = "sha256-SZscM6ze9yY+iRDx/5F4XbrLXIbp6QkFnzxN7zvP9CQ=";
+  };
+
+  checkInputs = [
+    eth-utils
+    hypothesis
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "hexbytes" ];
+
+  meta = with lib; {
+    description = "`bytes` subclass that decodes hex, with a readable console output";
+    homepage = "https://github.com/ethereum/hexbytes";
+    license = licenses.mit;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}