Error found:
at tests/purs/failing/3405.purs:8:1 - 8:43 (line 8, column 1 - line 8, column 43)

  Cannot derive a type class instance, because the type declaration for Something could not be found.


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