Description of problem:

Trying out some software packages (means: install - try - remove) led to a strange problem with dnf (dnf-0:1.1.5-1.fc23.noarch).


dnf remove deleted wrong packages due to faulty dependencies (I think).

Here the recipe (shortened a bit):

Install blinken (a small game):

[root@ln1 ~]# dnf install blinken
Installed:
  blinken.x86_64 15.04.2-2.fc23                  
  sj-fonts-common.noarch 2.0.2-13.fc23                  
  sj-stevehand-fonts.noarch 2.0.2-13.fc23

Then remove it again:

[[root@ln1 ~]# dnf remove blinken
Remove:
 blinken                                   x86_64    15.04.2-2.fc23
 mesa-dri-drivers                          x86_64    11.1.0-1.20151218.fc23
 mesa-filesystem                           x86_64    11.1.0-1.20151218.fc23
 sj-fonts-common                           noarch    2.0.2-13.fc23
 sj-stevehand-fonts                        noarch    2.0.2-13.fc23

Note the two additional lines compared to the "dnf install" list above!
If one (like me in this case) doesn't notice the additionally (to be) removed mesa-drivers the system is no longer GUI-like usable (without those graphics drivers...).


I did several tests then with installing and removing blinken, sj-fonts-common and sj-stevehand-fonts, together and in several combinations.

But I'm not able to see why the mesa-drivers get removed automatically.
This is reproducable.

Of course, removing blinken without the dependencies is working fine:

[root@ln1 ~]# dnf --setopt=clean_requirements_on_remove=False remove blinken sj-stevehand-fonts sj-fonts-common


So I suspect a wrong (hidden) dependency somewhere in those three packages or a bug in dnf itself.