Bug 1338564

Same here. I've reported a more detailled bug #1336102.

Please ignore my previous comment #1.

Now the details:

Steps to reproduce:
1. open yumex-dnf
2. select any package for installation, e.g. python3-pylint-gui
3. press "run" button
4. confirm transaction
5. enter your password and confirm

What happens:
Crash on backend, error dialog shows up, transaction is aborted.

What should happen:
No crash. Transaction should be run.

Additional info:
Error message from yumex-dnf error dialog:

20:10:46: EXCEPTION : g-io-error-quark: GDBus.Error:org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib64/python3.5/site-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 83, in newFunc
    rc = func(*args, **kwargs)
  File "/usr/share/dnfdaemon/dnfdaemon-system", line 537, in RunTransaction
    result = self.run_transaction()
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 550, in run_transaction
    self._check_gpg_signatures(to_dnl)
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 699, in _check_gpg_signatures
    result, errmsg = self.base.sigCheckPkg(po)
  File "/usr/lib/python3.5/site-packages/dnf/util.py", line 79, in __getattr__
    % (C.__name__, name))
AttributeError: 'Base' object has no attribute 'sigCheckPkg'
 (36)


Workaround:
downgrade dnf to 1.1.8, don't upgrade to 1.1.9.

Meta:
@timlau or Vadim Raskhozhev: can you please reassign this bug to dnf?

the root cause is this commit

https://github.com/rpm-software-management/dnf/commit/f09c8699e431c3f1dd84418893226353bc8f595c#diff-d803a439b7caecec0dcb50c5d72b3b85L932

a mayor rename of all non API stuff in dnf.Base

This is not directly a dnf issues, because I use non public API and get hit by this, because DNF dont have any public API for signature checking.

fixed upstream in dnf-daemmon
https://github.com/timlau/dnf-daemon/commit/d3e4d2d18cd579f8c269575152ca96dd439c8df5

build a pre-release in copr

sudo dnf copr enable timlau/yumex-dnf
sudo dnf update dnfdaemon --refresh

*** Bug 1339107 has been marked as a duplicate of this bug. ***

the dnf issue triggered here is that the rename of the non public api methods
if not catched by the deprecation handler as many of the other

Base.xxxx to Base._xxxx renames

this is fixed in upstream dnf

https://github.com/rpm-software-management/dnf/commit/176a81e357b8e169008c831963c3b487b3bac40a

but it dont change the fact, that dnfdaemon is using non public API and it should not.

Following your argument of comment #3: Is this really a bug of dnf-daemon or a bug of DNF because it's missing a public API for an important function?

However:
* This bug is critical for me, since I have set up some systems for non-technical users which use solely yumex-dnf for system-updates. 
* Fedora 23 is affected as well.

I also see this bug.

Doesn't affect command line dnf or yumex. Does affect yumex-dnf in fc23:
http://imgur.com/YXLW9vtl.png

(In reply to Tim Lauridsen from comment #5)
> build a pre-release in copr
> 
> sudo dnf copr enable timlau/yumex-dnf
> sudo dnf update dnfdaemon --refresh

installed from copr, it works fine, but I would say that the option Svae repositories is not working, I mean that when I check/uncheck a repo, next time I start program, my choices were forgotten.Can you check please??

> 
> installed from copr, it works fine, but I would say that the option Svae
> repositories is not working, I mean that when I check/uncheck a repo, next
> time I start program, my choices were forgotten.Can you check please??

https://github.com/timlau/yumex-dnf/issues/107

dnfdaemon-0.3.16-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-7d13699f3b

dnfdaemon-0.3.16-1.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-fe54f920b2

Thanks Tim, that fixed it on fc23 for me

dnfdaemon-0.3.16-1.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-7d13699f3b

dnfdaemon-0.3.16-1.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-fe54f920b2

Confirming dnfdaemon-0.3.16-1.fc23 fixes the issue for me.

dnfdaemon-0.3.16-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

*** Bug 1340658 has been marked as a duplicate of this bug. ***

dnfdaemon-0.3.16-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

dnf-1.1.10-1.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-267f843cda

dnf-1.1.10-1.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-8caa619a9e

dnf-1.1.10-1.fc24 dnf-plugins-core-0.1.21-3.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-878284e0d3

dnf-1.1.10-1.fc25, dnf-plugins-core-0.1.21-4.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-8caa619a9e

dnf-1.1.10-1.fc23, dnf-plugins-core-0.1.21-3.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-267f843cda

dnf-1.1.10-1.fc24, dnf-plugins-core-0.1.21-3.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-878284e0d3

dnf-1.1.10-1.fc24, dnf-plugins-core-0.1.21-3.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

dnf-1.1.10-1.fc23, dnf-plugins-core-0.1.21-3.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

dnf-1.1.10-1.fc25, dnf-plugins-core-0.1.21-4.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.