emerge -up gentoo-sources
These are the packages that would be merged, in order:
Calculating dependencies... done!
[ebuild U ] sys-libs/readline-5.2_p7 [4.3-r4]
[ebuild U ] sys-apps/debianutils-2.28.2 [1.16.7-r4]
[ebuild N ] sys-apps/mktemp-1.5
[ebuild U ] sys-apps/baselayout-1.12.10-r5 [1.9.4-r6] USE="-unicode%"
[ebuild N ] sys-apps/sysvinit-2.86-r10 USE="(-ibm) (-selinux) -static"
[ebuild N ] sys-fs/udev-115-r1 USE="(-selinux)"
[ebuild U ] sys-apps/module-init-tools-3.4 [3.0] USE="-old-linux%"
[ebuild N ] virtual/init-0
[ebuild NS ] sys-kernel/gentoo-sources-2.6.23-r6 USE="-build -symlink"
[blocks B ] sys-apps/sysvinit (is blocking sys-apps/baselayout-1.9.4-r6)