Bug 1130878

Created attachment 927655 [details]
File: backtrace

Created attachment 927656 [details]
File: environ

Looks like I was not using above command as root user and also not having dnf-plugins-core installed when this abrt happened.

Hi, thanks for the report. We'll take a look.

Just ran into this:

[asinha@localhost  ~]$ sudo dnf install @java
Dependencies resolved.
Traceback (most recent call last):
  File "/bin/dnf", line 36, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 182, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 84, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 141, in _main
    ret = resolving(cli, base)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 160, in resolving
    base.do_transaction()
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 185, in do_transaction
    grp_diff = self._groups_diff()
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 145, in _groups_diff
    return self.group_persistor.diff()
  File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 273, in diff
    return _GroupsDiff(self._original, self.db)
  File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 170, in __init__
    self.added, self.removed = _diff_dcts(db_old, db_new)
  File "/usr/lib/python2.7/site-packages/dnf/persistor.py", line 60, in _diff_dcts
    keys1 = set(dct1.keys())
AttributeError: 'NoneType' object has no attribute 'keys'

[asinha@localhost  ~]$ dnf --version
0.6.0
  Installed: dnf-0:0.6.0-99.1121.20140822gita896404.fc21.noarch at 2014-08-24 01:44
  Built    :  at 2014-08-22 12:44

  Installed: rpm-0:4.12.0-0.beta1.5.fc21.x86_64 at 2014-08-22 16:43
  Built    : Fedora Project at 2014-08-20 12:30
[asinha@localhost  ~]$ 


Seems like one can't install groups using dnf at the moment. Updating severity.

Another user experienced a similar problem:

Trying to install a group. By the way, note how "dnf group list" shows localized group names, but "dnf group install <group>" wants English names!

reporter:       libreport-2.2.3
cmdline:        /usr/bin/python -OO /usr/bin/dnf group install 'GNOME Desktop Environment'
executable:     /usr/bin/dnf
kernel:         3.16.1-300.fc21.x86_64
package:        dnf-0.6.0-1.fc21
reason:         persistor.py:60:_diff_dcts:AttributeError: 'NoneType' object has no attribute 'keys'
runlevel:       N 5
type:           Python
uid:            0

Reproduced.

Fixed by 031f95b on master.

Thaks Ales. I'll confirm it when the fix hits the nightly repo.

*** Bug 1134572 has been marked as a duplicate of this bug. ***

Seems fixed. I get a list of packages in the group, and then it tries to install whatever isn't installed yet. 

dnf-0.6.1-99.1134.20140828git883a271.fc21.noarch

Thanks. 
Warm regards,
Ankur

dnf-0.6.1-1.fc21 has been submitted as an update for Fedora 21.
https://admin.fedoraproject.org/updates/dnf-0.6.1-1.fc21

dnf-0.6.1-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

*** Bug 1145820 has been marked as a duplicate of this bug. ***