Comment # 15 on bug 1007652 from Oliver Neukum

(In reply to Michael Gorse from comment #14)
> It gets installed if the GNOME desktop is installed at least. It is needed
> there for orca to be able to interact with a Braille display.
> 
> Do we have a way to generate a message to be displayed if brltty is being
> updated? If so, then that might help to warn users who might have one of the
> affected Braille displays.

That is no good. If the package is installed by default we'd mess up the next
update for the vast majority of users who don't even know what brltty is. We'd
have to know whether the device is actually connected.
If we could do that, the point would become moot and we could probe in the udev
rule.