dev-libs/bglibs is a build-time only dependency, since it consists of static libraries. Seems to be true for many other packages, too: app-admin/srlog2 net-ftp/twoftpd net-mail/mailfront net-mail/qmail-autoresponder net-mail/qmail-qfilter sys-apps/ucspi-proxy
Appears to have already been magically fixed with the EAPI bump in 0.36-r4. Please file separate bug reports for the other packages.
Starting with EAPI 2, RDEPEND is empty by default, even when DEPEND is defined?
(In reply to comment #2) > Starting with EAPI 2, RDEPEND is empty by default, even when DEPEND is > defined? Appears to be true only from EAPI=4: http://devmanual.gentoo.org/ebuild-writing/eapi/
bglibs provides shared libs in 1.106 $ scanelf -qRn /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/ libbg.so.1,libbg-sysdeps.so.1,libc.so.6 /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/usr/bin/ucspi-proxy-pop3 libbg.so.1,libbg-sysdeps.so.1,libc.so.6 /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/usr/bin/ucspi-proxy-log libbg.so.1,libbg-sysdeps.so.1,libc.so.6 /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/usr/bin/ucspi-proxy-imap libbg.so.1,libbg-sysdeps.so.1,libc.so.6 /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/usr/bin/ucspi-proxy-http-xlate libbg.so.1,libbg-sysdeps.so.1,libc.so.6 /var/tmp/portage/sys-apps/ucspi-proxy-0.98/image/usr/bin/ucspi-proxy