Error found:
in module Test
at tests/purs/failing/OrphanUnnamedInstance.purs:6:1 - 7:11 (line 6, column 1 - line 7, column 11)

  Orphan instance found for
                   
    Class.C Boolean
                   
  This problem can be resolved by declaring the instance in Class, or by defining the instance on a newtype wrapper.

in type class instance
                 
  Class.C Boolean
                 

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