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/aiodns/default.nix

@@ -0,0 +1,38 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pycares
+, pythonOlder
+, typing
+}:
+
+buildPythonPackage rec {
+  pname = "aiodns";
+  version = "3.0.0";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "saghul";
+    repo = pname;
+    rev = "aiodns-${version}";
+    sha256 = "1i91a43gsq222r8212jn4m6bxc3fl04z1mf2h7s39nqywxkggvlp";
+  };
+
+  propagatedBuildInputs = [
+    pycares
+  ] ++ lib.optional (pythonOlder "3.7") [
+    typing
+  ];
+
+  # Could not contact DNS servers
+  doCheck = false;
+
+  pythonImportsCheck = [ "aiodns" ];
+
+  meta = with lib; {
+    description = "Simple DNS resolver for asyncio";
+    homepage = "https://github.com/saghul/aiodns";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}