- { dflags <- getDOpts
- ; liftIO (dumpIfSet_dyn dflags Opt_D_dump_deriv "Generic instances"
- (vcat (map pprInstInfoDetails gen_inst_info)))
+ { dumpDerivingInfo $ hang (ptext (sLit "Generic instances"))
+ 2 (vcat (map pprInstInfoDetails gen_inst_info))