trace_dump dflags rule rule_rhs stuff
| not (dopt Opt_D_dump_rule_firings dflags)
, not (dopt Opt_D_dump_rule_rewrites dflags) = stuff
trace_dump dflags rule rule_rhs stuff
| not (dopt Opt_D_dump_rule_firings dflags)
, not (dopt Opt_D_dump_rule_rewrites dflags) = stuff