A (bad) suggestion added by LemonBoy on Sun Nov 12 19:22:47 2017
(use posix) (print (call/cc (lambda (k) (set-signal-handler! signal/int (lambda _ (k "INTR"))) (stfl:run! ...))))
(use posix) (print (call/cc (lambda (k) (set-signal-handler! signal/int (lambda _ (k "INTR"))) (stfl:run! ...))))