ruleFVs (Rule { ru_fn = _do_not_include
                  -- See Note [Rule free var hack]
              , ru_bndrs = bndrs
              , ru_rhs = rhs, ru_args = args })
  = filterFV isLocalVar $ addBndrs bndrs (exprs_fvs (rhs:args))
ruleFVs (Rule { ru_fn = _do_not_include
                  -- See Note [Rule free var hack]
              , ru_bndrs = bndrs
              , ru_rhs = rhs, ru_args = args })
  = filterFV isLocalVar $ addBndrs bndrs (exprs_fvs (rhs:args))
ruleFVs (Rule { ru_fn = _do_not_include
                  -- See Note [Rule free var hack]
              , ru_bndrs = bndrs
              , ru_rhs = rhs, ru_args = args })
  = filterFV isLocalVar $ addBndrs bndrs (exprs_fvs (rhs:args))