Trying to upgrade this code from WAI 1.4.1 to 2.0.0.  On one hand, I don't have to liftIO the IO action on line 23 anymore.  On the other, this line that writes the request body to a file seems to be giving me some trouble now:

    No instance for (MonadResource IO) arising from a use of `sinkFile'

    Possible fix: add an instance declaration for (MonadResource IO)

    In the second argument of `($$)', namely

      `sinkFile ("sources" </> fromText name)'

    In a stmt of a 'do' block:

      requestBody req $$ sinkFile ("sources" </> fromText name)

If I put a "runResouceT" in front of that, like "runResourceT $ requestBody req $$ sinkFile ("sources" </> fromText name)", I get

Any pointers?