I'd like to update F22 -> F23 with "dnf-3 distro-sync".
Have VBox modules self-compiled with akmods package.
Yum see some trouble with it but can proceed with --skip-broken.
DNF fails for all cases I know (both with allowerasing and not, best=false).
Specifying exclude seems not working because of rhbz #1253825

Full logs attached.


$ cat /etc/dnf/dnf.conf
[main]
gpgcheck=1
installonly_limit=3
clean_requirements_on_remove=true
best=false
deltarpm=true
debuglevel=3
keepcache=true
exclude=kmod-VirtualBox

# rpm -qa yum dnf\* hawkey libsolv
dnf-plugins-core-0.1.11-1.fc22.noarch
hawkey-0.6.0-1.fc22.x86_64
dnf-yum-1.1.1-2.fc22.noarch
dnf-conf-1.1.1-2.fc22.noarch
dnf-1.1.1-2.fc22.noarch
libsolv-0.6.11-2.fc22.x86_64
yum-3.4.3-505.fc22.noarch


*** yum (no skip-broken) ***

yum-deprecated --releasever=23 distro-sync --enablerepo=rpmfusion-free-rawhide --enablerepo=rpmfusion-nonfree-rawhide --disablerepo=*-updates --disablerepo rpmfusion-free --disablerepo rpmfusion-nonfree

--> Finished Dependency Resolution
--> Running transaction check
---> Package VirtualBox.x86_64 0:4.3.30-1.fc22 will be erased
---> Package kernel.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-core.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-debug-core.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-debug-devel.x86_64 0:4.0.4-202.fc21 will be erased
---> Package kernel-debug-devel.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-debug-modules.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-devel.x86_64 0:4.0.4-202.fc21 will be erased
---> Package kernel-devel.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-modules.x86_64 0:4.1.6-201.fc22 will be erased
---> Package kernel-modules-extra.x86_64 0:4.1.6-201.fc22 will be erased
--> Finished Dependency Resolution
Error: Package: kmod-VirtualBox-4.1.8-200.fc22.x86_64-4.3.30-1.fc22.x86_64 (installed)
           Requires: VirtualBox-kmod-common >= 4.3.30
           Removing: VirtualBox-4.3.30-1.fc22.x86_64 (installed)
               VirtualBox-kmod-common = 4.3.30-1.fc22
           Downgraded By: VirtualBox-4.3.28-1.fc22.x86_64 (rpmfusion-free-rawhide)
               VirtualBox-kmod-common = 4.3.28-1.fc22
           Available: VirtualBox-guest-4.3.28-1.fc22.i686 (rpmfusion-free-rawhide)
               VirtualBox-kmod-common = 4.3.28-1.fc22
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest


*** yum (skip-broken) ***

yum-deprecated --releasever=23 distro-sync --enablerepo=rpmfusion-free-rawhide --enablerepo=rpmfusion-nonfree-rawhide --disablerepo=*-updates --disablerepo rpmfusion-free --disablerepo rpmfusion-nonfree --skip-broken

--> Finished Dependency Resolution

Packages skipped because of dependency problems:
    VirtualBox-4.3.28-1.fc22.x86_64 from rpmfusion-free-rawhide
    VirtualBox-kmodsrc-4.3.28-1.fc22.x86_64 from rpmfusion-free-rawhide
    akmod-VirtualBox-4.3.28-1.fc22.x86_64 from rpmfusion-free-rawhide

Dependencies Resolved


*** dnf (no allowerasing) ***

dnf-3 --releasever=23 distro-sync --enablerepo=rpmfusion-free-rawhide --enablerepo=rpmfusion-nonfree-rawhide --disablerepo=*-updates  --disablerepo rpmfusion-free --disablerepo rpmfusion-nonfree

--> Finished dependency resolution
Error: package kmod-VirtualBox-4.1.8-200.fc22.x86_64-4.3.30-1.fc22.x86_64 requires VirtualBox-kmod-common >= 4.3.30, but none of the providers can be installed
(try to add '--allowerasing' to command line to replace conflicting packages)


*** dnf (allowerasing) ***

--> Finished dependency resolution
Dependencies resolved.
Error: The operation would result in removing the booted kernel: kernel-core-4.1.8-200.fc22.x86_64.