[nugetchar@arch ~]$ sudo pacman -Syu
:: Synchronizing package databases...
 core                     121.2 KiB  65.3K/s 00:02 [######################] 100%
 extra                   1742.9 KiB   429K/s 00:04 [######################] 100%
 community                  3.4 MiB  1971K/s 00:02 [######################] 100%
 multilib                 161.7 KiB  36.7K/s 00:04 [######################] 100%
:: Starting full system upgrade...
:: Replace virtualbox-guest-modules with community/virtualbox-guest-dkms? [Y/n]
:: Replace virtualbox-host-modules with community/virtualbox-host-dkms? [Y/n]
resolving dependencies...
looking for conflicting packages...
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
:: nvidia-libgl and mesa-libgl are in conflict