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/slackclient/default.nix

@@ -0,0 +1,76 @@
+{ lib
+, stdenv
+, aiohttp
+, buildPythonPackage
+, codecov
+, fetchFromGitHub
+, flake8
+, isPy3k
+, mock
+, psutil
+, pytest-cov
+, pytest-mock
+, pytestCheckHook
+, pytest-runner
+, requests
+, responses
+, six
+, websocket-client
+}:
+
+buildPythonPackage rec {
+  pname = "slackclient";
+  version = "2.9.3";
+
+  disabled = !isPy3k;
+
+  src = fetchFromGitHub {
+    owner = "slackapi";
+    repo = "python-slack-sdk";
+    rev = "v${version}";
+    sha256 = "1rfb7izgddv28ag37gdnv3sd8z2zysrxs7ad8x20x690zshpaq16";
+  };
+
+  propagatedBuildInputs = [
+    aiohttp
+    websocket-client
+    requests
+    six
+  ];
+
+  checkInputs = [
+    codecov
+    flake8
+    mock
+    psutil
+    pytest-cov
+    pytest-mock
+    pytestCheckHook
+    pytest-runner
+    responses
+  ];
+
+  # Exclude tests that requires network features
+  pytestFlagsArray = [ "--ignore=integration_tests" ];
+
+  disabledTests = [
+    "test_start_raises_an_error_if_rtm_ws_url_is_not_returned"
+  ] ++ lib.optionals stdenv.isDarwin [
+    # these fail with `ConnectionResetError: [Errno 54] Connection reset by peer`
+    "test_issue_690_oauth_access"
+    "test_issue_690_oauth_v2_access"
+    "test_send"
+    "test_send_attachments"
+    "test_send_blocks"
+    "test_send_dict"
+  ];
+
+  pythonImportsCheck = [ "slack" ];
+
+  meta = with lib; {
+    description = "A client for Slack, which supports the Slack Web API and Real Time Messaging (RTM) API";
+    homepage = "https://github.com/slackapi/python-slackclient";
+    license = licenses.mit;
+    maintainers = with maintainers; [ flokli psyanticy ];
+  };
+}