[shakna]

Wisp [0] is the big one talked about in Scheme land, and it wouldn't need 35 levels of indentation. Like the rest of Lisp-world, there's flexibility where you need it.

For example, this shows a bit of the mix available:

      for-each
       λ : task
           if : and (equal? task "help") (not (null? (delete "help" tasks)))
                map
                  λ : x
                      help #f #f x
                  delete "help" tasks
                run-task task
       . tasks

[0] https://srfi.schemers.org/srfi-119/srfi-119.html