.fricas.input not processed by Debian-based gcl27 (was Re: finding underlying lisp)

Hello,

Le mer. 26 nov. 2025 =C3=A0 17:58, Gr=C3=A9gory Vanuxem <[email protected]=
m> a =C3=A9crit :
>
> Hello,
>
> Le mer. 26 nov. 2025 =C3=A0 15:59, Dima Pasechnik <[email protected]> a =
=C3=A9crit :
> >
> > This was only a tip of the problem.
> >
> > We would like to have Sage working with GCL-compiled FriCAS, but it lea=
ks messages on things added to the workspace asynchronously, without a way =
to suppress them via ")set mess".
> >
> > sage: fricas('3')
> >
> > ends with
> >
> > TypeError: An error occurred when FriCAS evaluated '3':
> >    Function declaration sageprint : InputForm -> String has been added =
to
> >       workspace.
> >
> > see <https://github.com/sagemath/sage/issues/40569>
> >
> > Is this a FriCAS bug?
>
> I may be wrong but with quick tests on FriCAS built on top of GCL (the
> packaged FriCAS on Debian based system) and FriCAS built with Clozure
> CL or SBCL, the handling of default options at startup and via
> .fricas.input are different. Personally my .fricas.input contains
> ')set message time on', it is not taken into account at startup with
> GCL based FriCAS, contrary to the ones with SBCL or Clozure CL. So I
> would say it's an issue with FriCAS on top of GCL with startup
> options.
>
> Regards,
>
> Greg
>
> PS: I tested packaged FriCAS on a Debian-based system (1.3.11). Also
> 1.3.12 on SBCL or Clozure CL. And a recent version of FriCAS built on
> top of recent GCL.

After some further investigations, what I pointed out is not related
to SAGE, sorry, but to the official Debian-based gcl27 package.
'.fricas.input' is not processed at startup with the actual official
fricas package. I tested the gcl package (2.6.14 -  git:
Version_2_6_15pre18) to build FriCAS and the .fricas.input is
effectively processed. So since there was recently a discussion on
gcl-devel about pathname
(https://mail.gnu.org/archive/html/gcl-devel/2025-11/msg00001.html) I
gave a try to the GCL git version commit: HEAD master Version_2_7_2pre
(Account for possible #\. in pathname-type when compiling) and this
issue is solved, I don't know if this discussion is related to this
issue though. FriCAS built with this version of GCL no longer exhibits
this issue.

For information.

Greg

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