Specify a path, or list of paths, to not copy, even if it's
            part of a copy_specs[] entry.

def add_forbidden_path(self, forbidden):
        """Specify a path, or list of paths, to not copy, even if it's
            part of a copy_specs[] entry.
        """
        if isinstance(forbidden, six.string_types):
            forbidden = [forbidden]

        if self.use_sysroot():
            forbidden = [self.join_sysroot(f) for f in forbidden]

        for forbid in forbidden:
            self._log_info("adding forbidden path '%s'" % forbid)
            for path in glob.glob(forbid):
                self.forbidden_paths.append(path)