[tj@wolf ~]$ sudo pacman -Syy mate mate-extra
[sudo] password for tj:
:: Synchronizing package databases...
 antergos                                                             131.1 KiB  1121K/s 00:00 [#######################################################] 100%
 core                                                                 120.8 KiB   750K/s 00:00 [#######################################################] 100%
 extra                                                               1756.0 KiB  1309K/s 00:01 [#######################################################] 100%
 community                                                              3.7 MiB  3.63M/s 00:01 [#######################################################] 100%
 multilib                                                             184.2 KiB  4.18M/s 00:00 [#######################################################] 100%
:: There are 15 members in group mate:
:: Repository antergos
   1) caja  2) libmatekbd  3) marco  4) mate-backgrounds  5) mate-control-center  6) mate-desktop  7) mate-icon-theme  8) mate-menus
   9) mate-notification-daemon  10) mate-panel  11) mate-session-manager  12) mate-settings-daemon  13) mate-themes  14) mate-user-guide
:: Repository community
   15) mate-polkit

Enter a selection (default=all):
:: There are 26 members in group mate-extra:
:: Repository antergos
   1) atril  2) caja-gksu  3) caja-image-converter  4) caja-open-terminal  5) caja-sendto  6) caja-share  7) engrampa  8) eom  9) galculator
   10) libmateweather  11) mate-applets  12) mate-common  13) mate-media  14) mate-power-manager  15) mate-screensaver  16) mate-sensors-applet
   17) mate-terminal  18) mate-user-share  19) mate-utils  20) mozo  21) pluma
:: Repository community
   22) caja-wallpaper  23) galculator-gtk2  24) mate-icon-theme-faenza  25) mate-netbook  26) mate-system-monitor

Enter a selection (default=all):
warning: mate-system-monitor-1.16.0-1 is up to date -- reinstalling
resolving dependencies...
looking for conflicting packages...
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
:: galculator-gtk2 and galculator are in conflict
[tj@wolf ~]$