gentoo-systemd-emerge

$ sudo emerge -1 systemd util-linux
WARNING: One or more repositories have missing repo_name entries:

	/usr/local/portage/local-overlay/profiles/repo_name

NOTE: Each repo_name entry should be a plain text file containing a
unique name for the repository on the first line.



 * IMPORTANT: 18 news items need reading for repository 'gentoo'.
 * Use eselect news read to view new items.


 * IMPORTANT: config file '/etc/portage/package.use/packages' needs updating.
 * See the CONFIGURATION FILES section of the emerge
 * man page to learn how to update config files.
Calculating dependencies... done!


[nomerge       ] sys-apps/systemd-226:0/2::gentoo  USE="acl kdbus kmod lz4 pam seccomp ssl -apparmor -audit -cryptsetup -curl -elfutils -gcrypt -gnuefi -http -idn -importd -lzma -nat -policykit -qrcode (-selinux) -sysv-utils {-test} -vanilla -xkb" ABI_X86="(64) -32 (-x32)" 
[ebuild     U ~]  sys-apps/util-linux-2.27::gentoo [2.25.2-r2::gentoo] USE="cramfs ncurses nls pam suid systemd udev unicode -caps -fdformat -python (-selinux) -slang -static-libs {-test} -tty-helpers" ABI_X86="(64) -32 (-x32)" PYTHON_SINGLE_TARGET="python2_7 -python3_3 -python3_4" PYTHON_TARGETS="python2_7 python3_4 -python3_3" 3,876 KiB
[nomerge       ] x11-base/xorg-server-1.16.4:0/1.16.1::gentoo  USE="ipv6 nptl suid systemd udev xorg -dmx -doc -glamor -kdrive -minimal (-selinux) -static-libs -tslib -unwind -wayland -xnest -xvfb" 
[nomerge       ]  sys-apps/dbus-1.8.16::gentoo  USE="X systemd -debug -doc (-selinux) -static-libs {-test}" ABI_X86="(64) -32 (-x32)" 
[ebuild  N    ~]   sys-apps/systemd-226:0/2::gentoo  USE="acl kdbus kmod lz4 pam seccomp ssl -apparmor -audit -cryptsetup -curl -elfutils -gcrypt -gnuefi -http -idn -importd -lzma -nat -policykit -qrcode (-selinux) -sysv-utils {-test} -vanilla -xkb" ABI_X86="(64) -32 (-x32)" 3,823 KiB

Total: 2 packages (1 upgrade, 1 new), Size of downloads: 7,699 KiB

 * Error: circular dependencies:

(sys-apps/systemd-226:0/2::gentoo, ebuild scheduled for merge) depends on
 (sys-apps/util-linux-2.27:0/0::gentoo, ebuild scheduled for merge) (buildtime_slot_op)
  (sys-apps/systemd-226:0/2::gentoo, ebuild scheduled for merge) (buildtime)

It might be possible to break this cycle
by applying the following change:
- sys-apps/util-linux-2.27 (Change USE: -systemd)

Note that this change can be reverted, once the package has been installed.