dariost@MDM ~ $ sudo pacman -S pitivi
resolving dependencies...
looking for conflicting packages...

Packages (1) pitivi-0.97.1-1

Total Download Size:   3.31 MiB
Total Installed Size:  9.33 MiB

:: Proceed with installation? [Y/n] 
:: Retrieving packages...
 pitivi-0.97.1-1-x86_64                                  3.3 MiB  1369K/s 00:02 [#############################################] 100%
(1/1) checking keys in keyring                                                  [#############################################] 100%
(1/1) checking package integrity                                                [#############################################] 100%
(1/1) loading package files                                                     [#############################################] 100%
(1/1) checking for file conflicts                                               [#############################################] 100%
error: failed to commit transaction (conflicting files)
pitivi: /usr/lib64 exists in filesystem
Errors occurred, no packages were upgraded.
dariost@MDM ~ $ pacman -Qo /usr/lib64
/usr/lib64 is owned by filesystem 2015.09-1