bug#36376: Application menu of desktop environment not automatically updated

[Leo Prikler <leo.prikler@student.tugraz.at>]

Hi Ludo,

Am Dienstag, den 03.11.2020, 23:46 +0100 schrieb Ludovic Courtès:
> Ludovic Courtès <ludo@gnu.org> skribis:
> 
> > This is not news to us, but as
> > <https://distrowatch.com/weekly.php?issue=20190624#guixsd> notes,
> > the
> > application menu of desktop environments is not automatically
> > updated
> > when a package is installed or removed.  It’d be great if we could
> > somehow notify the desktop environment.
> 
> We’ve investigated today on IRC with Maxim and Leo P. and here’s the
> summary of our findings:
Seeing my name thrown around more and more lately makes me blush a
little.
> [...]
> 
> The GLib patch below is an attempt to monitor ~/.guix-profile and to
> treat changes to that symlink as if they were changes to
> ~/.guix-profile/share/applications (which contains ‘.desktop’ files.)
> It actually builds but I haven’t tested it yet.  :-)
> 
> WDYT?
Not having tested it either, I think that we should also listen on
/run/current-system/ (if it exists), so that changes to the system as
done by `reconfigure` are picked up.  This includes most importantly
changes to the GNOME ecosystem itself.

Regards, Leo