[pkg-gnupg-maint] Bug#1129944: pinentry-qt: immediate crash if X display is not available

[Vincent Lefevre]

Hi,

On 2026-03-30 18:24:27 +0200, Andreas Metzler wrote:
> is your actual breakage with a invalid $DISPLAY or with
> XDG_SESSION_TYPE=x11 and unset $DISPLAY?

I've tested with $XDG_SESSION_TYPE set to x11 and tty and with
$DISPLAY unset and set to an invalid value (":1").

With XDG_SESSION_TYPE=tty and $DISPLAY unset, I get a message
like

OK Pleased to meet you, process 1389711

as expected.

But in the 3 other cases, I get a "could not connect to display"
error from qt.qpa.xcb, then pinentry-qt aborts.

> I am wondering whether invalid $DISPLAY is something that really
> happens in no-exotic setups and needs to be handled.

Without a specific setup to fix the issue (in a limited way), this
can happen with GNU Screen (and tmux too, I suppose). Having to use
an environment variable with a fixed value instead of a dynamical
query was just a poor design.

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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