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/python-engineio/default.nix

@@ -0,0 +1,72 @@
+{ lib
+, stdenv
+, aiohttp
+, buildPythonPackage
+, eventlet
+, fetchFromGitHub
+, iana-etc
+, libredirect
+, mock
+, pytestCheckHook
+, pythonOlder
+, requests
+, tornado
+, websocket-client
+}:
+
+buildPythonPackage rec {
+  pname = "python-engineio";
+  version = "4.3.2";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "miguelgrinberg";
+    repo = "python-engineio";
+    rev = "v${version}";
+    sha256 = "sha256-RXIFfd4eeRLaDPe6+8jhIN2TI1yz/uDfnvWT95euaIo=";
+  };
+
+  checkInputs = [
+    aiohttp
+    eventlet
+    mock
+    requests
+    tornado
+    websocket-client
+    pytestCheckHook
+  ];
+
+  doCheck = !stdenv.isDarwin;
+
+  preCheck = lib.optionalString stdenv.isLinux ''
+    echo "nameserver 127.0.0.1" > resolv.conf
+    export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf) \
+      LD_PRELOAD=${libredirect}/lib/libredirect.so
+  '';
+
+  postCheck = ''
+    unset NIX_REDIRECTS LD_PRELOAD
+  '';
+
+  # somehow effective log level does not change?
+  disabledTests = [
+    "test_logger"
+  ];
+
+  pythonImportsCheck = [
+    "engineio"
+  ];
+
+  meta = with lib; {
+    description = "Python based Engine.IO client and server";
+    longDescription = ''
+      Engine.IO is a lightweight transport protocol that enables real-time
+      bidirectional event-based communication between clients and a server.
+    '';
+    homepage = "https://github.com/miguelgrinberg/python-engineio/";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ mic92 ];
+  };
+}