From mboxrd@z Thu Jan  1 00:00:00 1970
From: Danny Milosavljevic <dannym@scratchpost.org>
Subject: Re: [PATCH 17/24] gnu: kwidgetsaddons: Fix test failure.
Date: Tue, 16 Aug 2016 21:22:26 +0200
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To: David Craven <david@craven.ch>
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>                (system (string-append (assoc-ref inputs "xorg-server")
> -                                     "/bin/Xvfb :1 &"))
> +                                     "/bin/Xvfb :1 -screen 0 640x480x24 &"))

Might

             (setenv "QT_QPA_PLATFORM" "offscreen")

also be enough? Starting an Xvfb server and then not stopping it again is kinda ... extreme. Also, who says that :1 is free?

I can see that it was there before, but just to be sure...