Description of problem:
On attempt to upgrade from Fedora 21 to 23, "dnf system-upgrade download --releasever=23" reports "cannot install both mozjs17-17.0.0-12.fc23.x86_64 and mozjs17-17.0.0-12.fc21.x86_64"
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Have a Fedora 21 system with mozjs17-17.0.0-12.fc21.x86_64 AND mozjs17-17.0.0-12.fc21.i686 installed
2. dnf system-upgrade download --releasever=23
[root@gigalith ~]# dnf system-upgrade download --releasever=23
cannot install both mozjs17-17.0.0-12.fc23.x86_64 and mozjs17-17.0.0-12.fc21.x86_64
Download proceeds as expected
Not sure if this is a dnf bug or a mozjs bug, or something else.
[root@gigalith ~]# rpm -q mozjs17
[root@gigalith ~]# rpm -qa | grep dnf
Removing the i686 package makes the problem go away (don't know why I have it, it's not required by any other package I have installed, but this is an ancient system that's been incrementally upgraded since F13).
Sorry, not much we can do here. Does it work if you specify add --best --allowerasing?
I'm afraid I can't test it now - I removed mozjs17-17.0.0-12.fc21.i686 manually and the upgrade to F23 then completed OK.
--best --allowerasing does not work. I also had to remove mozjs17-17.0.0-12.fc21.i686 plus additionally kdeplasma-addons
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