* IMPORTANT: config file '/etc/portage/postsync.d/50-eix-postsync' needs updating.
Calculating dependencies  
 * IMPORTANT: 11 news items need reading for repository 'gentoo'.
 * Use eselect news read to view new items.

 * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS
 * sections of the emerge man page to learn how to update config files.
... done!
Dependency resolution took 0.54 s (backtrack: 0/20).

[ebuild  N     ] net-analyzer/openbsd-netcat-1.219_p1 
[blocks B      ] net-analyzer/netcat ("net-analyzer/netcat" is soft blocking net-analyzer/openbsd-netcat-1.219_p1)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  (net-analyzer/netcat-110.20180111-r2:0/0::gentoo, installed) pulled in by
    net-analyzer/netcat required by @selected 

  (net-analyzer/openbsd-netcat-1.219_p1:0/0::gentoo, ebuild scheduled for merge) pulled in by
    net-analyzer/openbsd-netcat


For more information about Blocked Packages, please refer to the following
section of the Gentoo Linux x86 Handbook (architecture is irrelevant):

https://wiki.gentoo.org/wiki/Handbook:X86/Working/Portage#Blocked_packages