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/readthedocs-sphinx-ext/default.nix

@@ -0,0 +1,32 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, requests
+, pytest
+, mock
+, sphinx
+}:
+
+buildPythonPackage rec {
+  pname = "readthedocs-sphinx-ext";
+  version = "2.1.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-G/QuIOW3qUOJGnmM5cy5H9W6wiMLDBmdhTgMkhAHa3g=";
+  };
+
+  propagatedBuildInputs = [ requests ];
+
+  checkInputs = [ pytest mock sphinx ];
+
+  checkPhase = ''
+    py.test
+  '';
+
+  meta = with lib; {
+    description = "Sphinx extension for Read the Docs overrides";
+    homepage = "https://github.com/rtfd/readthedocs-sphinx-ext";
+    license = licenses.mit;
+  };
+}