Threading / Pipe Macro

[Zelphir Kaltstahl]

Hi Guile Users!

I recently looked at some online course about Elixir and saw an elegant
use of pipes (the operator `|>` in Elixir). Then I remembered, that in
Racket there are so called threading macros, which seem to accomplish
the same:

https://github.com/lexi-lambda/threading/blob/master/threading-lib/threading/main.rkt

I also searched around for tutorials or explanations on how to write
these macros. Sometimes I found excellent documenation in the Chicken
Scheme wiki, so I checked there:

https://wiki.call-cc.org/eggref/5/pipes

However, I would like to use a threading macro or pipes in Guile. I am
seeing these options:

(1) I could start trying to translate the Racket version to Guile, maybe
it would work easily, maybe it uses Racket specific macro stuff, I don't
know. However, I am not sure I would learn how the macros actually work.
Maybe I would.

(2) I could start from zero and try to implement the pipes I saw in the
online course about Elixir.

(3) Maybe something already exists in Guile, that I am unaware of and
could not find through searching. Maybe there are even more names for pipes.

So my questions are:

(1) Does something already exist?

(2) Would translating the Racket version be an easy thing to do, or is
there something in there, that cannot so easily be achieved with
syntax-parse, syntax-case and the likes? (For someone who rarely touches
macros and does not have a lot experience writing them.)

Regards,

Zelphir