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/oslo-serialization/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, msgpack
+, oslo-utils
+, oslotest
+, pbr
+, pytz
+, stestr
+}:
+
+buildPythonPackage rec {
+  pname = "oslo-serialization";
+  version = "4.3.0";
+
+  src = fetchPypi {
+    pname = "oslo.serialization";
+    inherit version;
+    sha256 = "sha256-OqRy9DSu6LvMByUxK39AmqH6VLvBNJBBJM9JsOhrkRU=";
+  };
+
+  postPatch = ''
+    # only a small portion of the listed packages are actually needed for running the tests
+    # so instead of removing them one by one remove everything
+    rm test-requirements.txt
+  '';
+
+  nativeBuildInputs = [ pbr ];
+
+  propagatedBuildInputs = [ msgpack oslo-utils pytz ];
+
+  checkInputs = [ oslotest stestr ];
+
+  checkPhase = ''
+    stestr run
+  '';
+
+  pythonImportsCheck = [ "oslo_serialization" ];
+
+  meta = with lib; {
+    description = "Oslo Serialization library";
+    homepage = "https://github.com/openstack/oslo.serialization";
+    license = licenses.asl20;
+    maintainers = teams.openstack.members;
+  };
+}