Allow transitive properties in @fields in REST API These transitive properties may not cross Multilinks, e.g., when querying 'issue' the property 'messages.author' is not allowed (because 'messages' is a multilink). A multilink at the end (e.g. messages in the example) is fine.

from roundup.dist.command.build import build_message_files, check_manifest
from distutils.command.install_lib import install_lib as base

class install_lib(base):

    def run(self):
        check_manifest()
        build_message_files(self)
        base.run(self)