* a wrong context was used to refine fixpoints arguments
when trying to optimize out the letin (grep for `AvoidLetIn):
(let rec f x = Fix... in f t ---> Fix... t)
* a wrong context was used to refine fixpoints arguments
when trying to optimize out the letin (grep for `AvoidLetIn):
(let rec f x = Fix... in f t ---> Fix... t)