Error found:
at tests/purs/failing/InvalidDerivedInstance.purs:8:1 - 8:30 (line 8, column 1 - line 8, column 30)

  Cannot derive the type class instance
                
    Data.Eq.Eq X
               X
                
  because the Data.Eq.Eq type class has 1 type argument, but the declaration specifies 2.


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