lpsmith/postgresql-simple — comment on commit efb67bac17887a8db7416f54745a2f1af56a033b
File:  line 0
By meteficha:

I've tried to say that I'm actually filling `Field` using `builtin2typname` ([see withStmt'](https://github.com/yesodweb/persistent/blob/6adb68c0514bf2bae7c8575104bc84dd26e436f4/persistent-postgresql/Database/Persist/Postgresql.hs#L138)), is there another place that could be creating `Field`s behind the scenes?