let { err = mkLongErrMsg loc (mkPrintUnqualified dflags rdr_env) msg extra } ;
(warns, errs) <- readTcRef errs_var ;
writeTcRef errs_var (warns, errs `snocBag` err) }
+
+dumpDerivingInfo :: SDoc -> TcM ()
+dumpDerivingInfo doc
+ = do { dflags <- getDOpts
+ ; when (dopt Opt_D_dump_deriv dflags) $ do
+ { rdr_env <- getGlobalRdrEnv
+ ; let unqual = mkPrintUnqualified dflags rdr_env
+ ; liftIO (putMsgWith dflags unqual doc) } }
\end{code}