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/pymodbus/default.nix

@@ -0,0 +1,64 @@
+{ lib
+, aiohttp
+, asynctest
+, buildPythonPackage
+, click
+, fetchFromGitHub
+, mock
+, prompt-toolkit
+, pygments
+, pyserial
+, pyserial-asyncio
+, pytestCheckHook
+, redis
+, sqlalchemy
+, tornado
+, twisted
+}:
+
+buildPythonPackage rec {
+  pname = "pymodbus";
+  version = "2.5.3";
+
+  src = fetchFromGitHub {
+    owner = "riptideio";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-pf1TU/imBqNVYdG4XX8fnma8O8kQHuOHu6DT3E/PUk4=";
+  };
+
+  # Twisted asynchronous version is not supported due to a missing dependency
+  propagatedBuildInputs = [
+    aiohttp
+    click
+    prompt-toolkit
+    pygments
+    pyserial
+    pyserial-asyncio
+    tornado
+  ];
+
+  checkInputs = [
+    asynctest
+    mock
+    pytestCheckHook
+    redis
+    sqlalchemy
+    twisted
+  ];
+
+  pythonImportsCheck = [ "pymodbus" ];
+
+  meta = with lib; {
+    description = "Python implementation of the Modbus protocol";
+    longDescription = ''
+      Pymodbus is a full Modbus protocol implementation using twisted,
+      torndo or asyncio for its asynchronous communications core. It can
+      also be used without any third party dependencies if a more
+      lightweight project is needed.
+    '';
+    homepage = "https://github.com/riptideio/pymodbus";
+    license = with licenses; [ bsd3 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}