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/nest-asyncio/default.nix

@@ -0,0 +1,28 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonAtLeast
+}:
+
+buildPythonPackage rec {
+  version = "1.5.4";
+  pname = "nest_asyncio";
+  disabled = !(pythonAtLeast "3.5");
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "f969f6013a16fadb4adcf09d11a68a4f617c6049d7af7ac2c676110169a63abd";
+  };
+
+  # tests not packaged with source dist as of 1.3.2/1.3.2, and
+  # can't check tests out of GitHub easily without specific commit IDs (no tagged releases)
+  doCheck = false;
+  pythonImportsCheck = [ "nest_asyncio" ];
+
+  meta = with lib; {
+    description = "Patch asyncio to allow nested event loops";
+    homepage = "https://github.com/erdewit/nest_asyncio";
+    license = licenses.bsdOriginal;
+    maintainers = with maintainers; [ costrouc ];
+  };
+}