www-servers/nginx-0.7.64 installs a perllocal.pod (which can lead to file collisions as soon as two packages make this mistake). See bug 107076 comment 77 for details.
Should be easy to drop in following to src_install()... find "${D}" -type f -name perllocal.pod -delete find "${D}" -depth -mindepth 1 -type d -empty -delete
https://bugs.gentoo.org/show_bug.cgi?id=241756#c9 "Fixed in nginx-0.7.64-r1" *** This bug has been marked as a duplicate of bug 241756 ***