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/pbr/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, setuptools
+, callPackage
+}:
+
+buildPythonPackage rec {
+  pname = "pbr";
+  version = "5.8.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-ZrxaNJEvQIuzklvyEjHLb1kgYme39j81A++GXBopLiU=";
+  };
+
+  propagatedBuildInputs = [ setuptools ];
+
+  # check in passthru.tests.pytest to escape infinite recursion with fixtures
+  doCheck = false;
+
+  passthru.tests = {
+    tests = callPackage ./tests.nix { };
+  };
+
+  pythonImportsCheck = [ "pbr" ];
+
+  meta = with lib; {
+    description = "Python Build Reasonableness";
+    homepage = "https://github.com/openstack/pbr";
+    license = licenses.asl20;
+    maintainers = teams.openstack.members;
+  };
+}