Error found:
at tests/purs/failing/MutRec2.purs:6:1 - 6:6 (line 6, column 1 - line 6, column 6)

  The value of x 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.