How can an X11 tell it's running in XWayland?

Olivier Fourdan fourdan at
Fri Jul 31 01:38:48 PDT 2015

Hi Thiago,

On 31 July 2015 at 10:28, Thiago Macieira <thiago at> wrote:

> It might have been unset to cause a parent application to start inside X
> instead of using Wayland.

​Yes, I thought of that as well, however in this case I'm working on, it's
for a screen saver so I reckon the environment remains pretty much
uncompromised at startup.
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