Error found:
at tests/purs/failing/Foldable.purs:12:1 - 15:36 (line 12, column 1 - line 15, column 36)

  The value of foldableL is undefined here, so this reference is not allowed.


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