Re: [Texmacs-dev] Python plug-ins and some general principles

[Jeroen Wouters]

I can't reproduce the error message, but I do see a problem. On a
Windows machine with no Python installed, `(supports-python?)` still
returns #t. That's because the `(python-launcher)` command doesn't take
into account the case where `(python-command)` is #f. See here for a
potential fix:
https://github.com/texmacs/texmacs/pull/66/commits

Even though the plugin setup fails, `(supports-python?)` still returns
true because line 518 in TeXmacs/progs/kernel/texmacs/tm-plugins.scm
being the last line to succeed before line 519 fails.

Best wishes,
Jeroen

On Sun, 2021-12-12 at 14:41 +0800, Darcy Shen via Texmacs-dev wrote:
> How to reproduce it? It is urgent for TeXmacs 2.1.1?
> 
> Could you (or the developer who reported the bug) provide the list of
> the buggy plugins and
> the screenshot of the error messages?
> 
> 
> ---- On Sat, 2021-12-11 19:19:09 TeXmacs <texmacs@lix.polytechnique.fr>
> wrote ----
> 
> > Dear all (in particular Darcy), 
> >  
> > One developer reported a problem concerning the Python-based plug-ins
> > under Windows 
> > (maybe also on other platforms): if Python is not installed, then
> > this provokes 
> > dozens of error messages. Could you please clean this up? 
> >  
> > As a general rule, plug-in initializations should be extremely
> > minimalistic and 
> > error-proof. You mainly should just determine what kind of
> > functionality is 
> > present and do not do anything else. Modules should be loaded only
> > when 
> > the plug-in is actually started. This is both for safety and
> > efficiency. 
> >  
> > Best wishes, --Joris 
> >  
> > _______________________________________________ 
> > Texmacs-dev mailing list 
> > Texmacs-dev@gnu.org 
> > https://lists.gnu.org/mailman/listinfo/texmacs-dev 
> 
> 
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