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/ratelimit/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "ratelimit";
+  version = "2.2.1";
+
+  src = fetchFromGitHub {
+    owner = "tomasbasham";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "04hy3hhh5xdqcsz0lx8j18zbj88kh5ik4wyi5d3a5sfy2hx70in2";
+  };
+
+  postPatch = ''
+    sed -i "/--cov/d" pytest.ini
+  '';
+
+  checkInputs = [ pytestCheckHook ];
+
+  pytestFlagsArray = [ "tests" ];
+
+  pythonImportsCheck = [ "ratelimit" ];
+
+  meta = with lib; {
+    description = "Python API Rate Limit Decorator";
+    homepage = "https://github.com/tomasbasham/ratelimit";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}