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/asgiref/default.nix

@@ -0,0 +1,55 @@
+{ lib
+, stdenv
+, async-timeout
+, buildPythonPackage
+, fetchFromGitHub
+, pytest-asyncio
+, pytestCheckHook
+, pythonOlder
+, fetchpatch
+}:
+
+buildPythonPackage rec {
+  version = "3.5.0";
+  pname = "asgiref";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "django";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-eWDsd8iWK1C/X3t/fKAM1i4hyTM/daGTd8CDSgDTL/U=";
+  };
+
+  patches = [
+    (fetchpatch {
+      name = "remove-sock-nonblock-in-tests.patch";
+      url = "https://github.com/django/asgiref/commit/d451a724c93043b623e83e7f86743bbcd9a05c45.patch";
+      sha256 = "0whdsn5isln4dqbqqngvsy4yxgaqgpnziz0cndj1zdxim8cdicj7";
+    })
+  ];
+
+  propagatedBuildInputs = [
+    async-timeout
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    pytest-asyncio
+  ];
+
+  disabledTests = lib.optionals stdenv.isDarwin [
+    "test_multiprocessing"
+  ];
+
+  pythonImportsCheck = [ "asgiref" ];
+
+  meta = with lib; {
+    description = "Reference ASGI adapters and channel layers";
+    homepage = "https://github.com/django/asgiref";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ SuperSandro2000 ];
+  };
+}