[arch-general] Error Pacman

[Luciano Camerra]

Can you help me with this error?
Thanks.

[root at li3 ~]# pacman -Syu
:: Synchronizing package databases...
 core                     118.6 KiB   488K/s 00:00 [######################]
100%
 extra                   1765.6 KiB   907K/s 00:02 [######################]
100%
 community                  3.5 MiB   532K/s 00:07 [######################]
100%
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...
error: failed to prepare transaction (could not satisfy dependencies)
:: lib32-libglapi: installing mesa (12.0.1-5) breaks dependency 'libglapi