NewtypeInstance2.out

Warning found:
in module [33mMain[0m
at tests/purs/warning/NewtypeInstance2.purs:15:1 - 15:86 (line 15, column 1 - line 15, column 86)

  The derived newtype instance for
  [33m                                [0m
  [33m  Main.MonadWriter w0           [0m
  [33m                   (MyWriter w0)[0m
  [33m                                [0m
  does not include a derived superclass instance for [33mControl.Monad.Monad[0m.

in value declaration [33mmonadWriterMyWriter[0m

where [33mw0[0m is a rigid type variable
        bound at (line 0, column 0 - line 0, column 0)

See https://github.com/purescript/documentation/blob/master/errors/MissingNewtypeSuperclassInstance.md for more information,
or to contribute content related to this warning.