net-mail/dot-forward currently has a dependency on sys-apps/groff that it
doesn't really need.
The current ebuild calls "make it"
The Makefile dependencies for "it" are "prog" and "man".
"prog" compiles the program
"man" generates a dot-forward.0 plain-text file out of a dot-forward.1 manpage
and requires nroff. dot-forward.1 is distributed with the tarball.
The dot-forward.0 file is discarded on install.
Therefore, if the ebuild is modified to call "make prog" instead of "make it"
the groff dependency would go away without any side effects.
Added -r2 to portage, can you check it, please?