On Wed, 16 Nov 2016 01:14:24 +0100, Marek Marczykowski-Górecki
<marma...@invisiblethingslab.com> wrote:

> On Wed, Nov 16, 2016 at 12:28:17AM +0100, yaqu wrote:
> > > You have tried to remove fedora-23 using dnf, while some appVMs
> > > still were using it as a template. Dnf has displayed an error,
> > > but also it has removed package, leaving it in qubes config (and
> > > not cleaning template's directory).
> > 
> > Anyway, I think it should be considered as a bug.
> > 
> > Steps to reproduce (assuming fedora-23-minimal is not installed):
> > 
> > $ sudo qubes-dom0-update qubes-template-fedora-23-minimal
> > $ qvm-create -t fedora-23-minimal -l red test-vm
> > $ sudo dnf remove qubes-template-fedora-23-minimal
> Yes, you're right. Previously (before Fedora introduced DNF), failure
> in %preun script aborted the operation, now it results just in a
> message. Not sure if this is a bug of a feature of DNF...

Removing package using plain rpm gives the same result, so it's not
dnf's fault.

There is an interesting entry in rpm changelog:
* Fix %preun scriptlet not aborting package erase

So it's fixed in rpm 4.13.0, but in dom0 we have broken rpm 4.13.0-rc1.

BTW it was fixed in commit:
And broken in:


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