Announcing a new package: kinda-ferpy. Here's a 
[write-up]( It implements the 
spreadsheet metaphor in an expressive way, based on MaiaVictor's excellent 
[PureState library]( It's not a 
complete functional reactive programming interface, but it does conveniently 
express Racket values as dependent computations.

(require kinda-ferpy)

(define x (stateful-cell 1))
(define y (stateful-cell 1))
(define sum (stateful-cell (λ _ (+ (x) (y)))))

(displayln (sum)) ; 2
(y 8)
(displayln (sum)) ; 9


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