Error found: at tests/purs/failing/CycleInForeignDataKinds.purs:5:1 - 5:31 (line 5, column 1 - line 5, column 31) A cycle appears in a set of kind declarations: {Bar, Foo} Kind declarations may not refer to themselves in their own signatures. See https://github.com/purescript/documentation/blob/master/errors/CycleInKindDeclaration.md for more information, or to contribute content related to this error.