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/hangups/default.nix

@@ -0,0 +1,70 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, configargparse
+, aiohttp
+, async-timeout
+, appdirs
+, readlike
+, requests
+, reparser
+, protobuf
+, urwid
+, mechanicalsoup
+, httpretty
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "hangups";
+  version = "0.4.18";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "tdryer";
+    repo = "hangups";
+    rev = "v${version}";
+    hash = "sha256-vq1OrOUPMQtezBFlisP2f/bvvYprDjhOuwUcT8rmIvw=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "protobuf>=3.1.0,<3.20" "protobuf" \
+      --replace "MechanicalSoup>=0.6.0,<0.13" "MechanicalSoup"
+  '';
+
+  propagatedBuildInputs = [
+    configargparse
+    aiohttp
+    async-timeout
+    appdirs
+    readlike
+    requests
+    reparser
+    protobuf
+    urwid
+    mechanicalsoup
+  ];
+
+  checkInputs = [
+    httpretty
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "hangups"
+    "hangups.client"
+    "hangups.event"
+    "hangups.parsers"
+    "hangups.user"
+  ];
+
+  meta = with lib; {
+    description = "The first third-party instant messaging client for Google Hangouts";
+    homepage = "https://github.com/tdryer/hangups";
+    license = licenses.mit;
+    maintainers = with maintainers; [ dotlambda ];
+  };
+}