Currently, if a user wants to delay evaluation of the #:got argument, they have to use quasiquoting and a specific list structure:

Scheme

#:got `(comp (begin (sleep 4) (+ 10 9)))

While this works, it requires the user to remember quotes and exposes the underlying implementation.

The Improvement: Introduce an implicit macro layer or leverage Scheme native promises (delay and force).

How it looks: You could write macros for assertions that automatically capture #:got as a thunk if wrapped in a custom keyword, or simply support native promises:

Scheme

(assert-equal #:expect 144

#:got (delay (let ((x 12)) (* x x))))

Alternatively, write a macro wrapper so users can just type (lazy-assert-equal ...) or pass an unquoted (comp ...) block that a macro intercepts before evaluation.