Is it possible to define a substruct with the same fields as its superstruct?

[Dimaugh Silvestris]

I'm trying different ways to define a struct that has the same fields as its superstruct without adding any new field, but all I get is errors saying struct expects a list of fields.
Something like:

(struct edible (name grams) #:transparent)

and then

(struct fruit #:super edible #:transparent)

or

(struct fruit edible #transparent)

Of course I could simulate this behavior myself creating different structs and then writing accesors and predicates that would work on all of them, like:

(define edible? (or? fruit? vegetable?  fish?))

But I'd rather ask first if there's an in-built, more elegant way of doing this.

[Noah Ma]

(struct fruit () #:super struct:edible #:transparent)

[Laurent]

or

(struct fruit edible () #:transparent)

On Thu, Dec 10, 2020 at 12:51 PM Noah Ma <noahs...@gmail.com> wrote:

(struct fruit () #:super struct:edible #:transparent)

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