Error found:
in module OverlapAcrossModules
at tests/purs/failing/OverlapAcrossModules.purs:6:1 - 6:22 (line 6, column 1 - line 6, column 22)

  Overlapping type class instances found for
                                  
    OverlapAcrossModules.Class.C X
                                 Y
                                  
  The following instances were found:

    OverlapAcrossModules.X.cxy
    OverlapAcrossModules.cxy


in type class instance
                                
  OverlapAcrossModules.Class.C X
                               Y
                                

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