This, or rather its earlier version is in fact the genesis of the
with-* and without-echo SRFI 205 procedures.  Going beyond what's
needed for those procedures but not exported, and beyond exporting
stty but only a specific subset of arguments needed for serial
line manipulation, is covered in the SRFI 205 issue:

Are there any modern needs for exposed stty(1) functionality
besides serial-line manipulation for communication with other
systems? (This SRFI does not propose to support retrocomputing
with real serial-line terminals.)

- Harold

----- Original message -----
From: Lassi Kortela <xxxxxx@lassi.io>
Date: Thursday, August 06, 2020 7:33 AM

And a Chicken stty library: <https://wiki.call-cc.org/eggref/5/stty>