Pierre Neidhardt <mail@ambrevar.xyz> writes:

> Marius Bakke <marius@gnu.org> writes:
>
>> You can run it directly from a shell, and/or attach a debugger.
>
> Thanks for the tip.
>
> Any idea how to attach Geiser to it?

The daemon is a C++ program, so I'm not sure that would work ...

If you are trying to increase the trace width within a build expression,
you probably just need to (setenv "COLUMNS" "200") in the builder.