def METHOD_NAME(self):
    # TODO: do we need spec['arpack-ng:parallel'].libs ?
    # query_parameters = self.spec.last_query.extra_parameters
    libraries = ["libarpack"]
    if "+mpi" in self.spec:
        libraries = ["libparpack"] + libraries
    return find_libraries(libraries, root=self.prefix, shared=True, recursive=True)