Package: gnome-builder Version: 3.28.1-1 With GNOME Builder 3.28.1 QEMU support doesn't work on Debian. A check is added in this specific commit: https://gitlab.gnome.org/GNOM E/gnome-builder/commit/771d70802f46cca181c8c49e14a54b11bac6a75b The bug is reported on the QEMU debian side: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=868030