Damien Mattei schreef op vr 04-02-2022 om 17:24 [+0100]:
> even with $nfx$ it does not seem to be possible without set!-values:
> https://docs.racket-lang.org/reference/set_.html#%28form._%28%28lib._racket%2Fprivate%2Fmore-scheme..rkt%29._set%21-values%29%29
> 
> does someone know how to implement set!-values in Scheme for Guile?

This is not Guile-specific, it works in any Scheme with syntax-rules,
by using a form of recursion, call-with-values, set!, lambda and
values, see attachement (LGPL3.0+ licensed).

Also, Racket is free software, so you could look at the source code of
Racket, maybe Racket's implementation can be ported to Guile Scheme and
maybe it's already valid Guile Scheme.

> On Fri, Feb 4, 2022 at 9:21 AM Damien Mattei <damien.mattei@gmail.com>
> wrote:
> [ a huge block of text ]

This block of text does not appear to have anything to do with your
question, what is it included for?

Greetings,
Maxime.