Knowledge Base:Man says no such file or directory for less

Synopsys
When asking for a manual page, man returns.

Environment
This occurs after a  operation. The package is not installed (anymore):

Analysis
When running emerge --depclean, Portage recently wants to remove as it already found a package that provided the  requirement. Unless the user picks the less package himself, it is slated for removal.

Resolution
(Re)Install.