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/srvlookup/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, dnspython
+, fetchFromGitHub
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "srvlookup";
+  version = "3.0.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "gmr";
+    repo = pname;
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-iXbi25HsoNX0hnhwZoFik5ddlJ7i+xml3HGaezj3jgY=";
+  };
+
+  propagatedBuildInputs = [
+    dnspython
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "srvlookup"
+  ];
+
+  meta = with lib; {
+    description = "Wrapper for dnspython to return SRV records for a given host, protocol, and domain name";
+    homepage = "https://github.com/gmr/srvlookup";
+    license = with licenses; [ bsd3 ];
+    maintainers = with maintainers; [ mmlb ];
+  };
+}