Comment 6 for bug 1906245

Thanks for the data Matthieu!

Hmm, that is indeed the "old & broken" style that should be (and is for qemu-block-extra) fixed in 5.1+dfsg-4ubuntu2.

...

Packaging:
- d/qemu-system-gui.*.in is gone in the packaging as intended.

Binary Package:
$ apt install qemu-system-gui
$ dpkg -l qemu-system-gui
ii qemu-system-gui:amd64 1:5.1+dfsg-4ubuntu2
root@h:~# ll /var/lib/dpkg/info/qemu-system-gui*
-rw-r--r-- 1 root root 396 Nov 30 11:33 /var/lib/dpkg/info/qemu-system-gui:amd64.list
-rw-r--r-- 1 root root 463 Nov 24 10:16 /var/lib/dpkg/info/qemu-system-gui:amd64.md5sums
=> no maintainer scripts anymore (as intended)

So - as with the former issue - what is failing is the old packages prerm of 1:5.1+dfsg-4ubuntu1.

I found in a discussion (thanks Juliank) why this isn't an issue with qemu-block-extra (which is what this was first found and fixed for) and can resolve it in a coming update.