# emerge -avt systemd

These are the packages that would be merged, in reverse order:

Calculating dependencies... done!
[nomerge       ] x11-base/xorg-server-1.14.2:0/1.14.2  USE="ipv6 nptl static-libs suid udev xorg -dmx -doc -kdrive -minimal (-selinux) -tslib -xnest -xvfb"
[nomerge       ]  virtual/udev-206  USE="gudev hwdb introspection kmod static-libs (-selinux)"
[nomerge       ]   sys-fs/udev-206  USE="acl firmware-loader gudev hwdb introspection kmod openrc static-libs -doc (-selinux)"
[ebuild  N     ]    sys-fs/udev-init-scripts-26  5 kB
[ebuild     U  ]    sys-apps/hwids-20130717-r1 [20130717] USE="udev" 8 kB
[ebuild  N     ]     virtual/udev-206  USE="gudev hwdb introspection kmod static-libs (-selinux)" 0 kB
[ebuild  N     ]      sys-fs/udev-206  USE="acl firmware-loader gudev hwdb introspection kmod openrc static-libs -doc (-selinux)" 2,287 kB
[ebuild     U  ] sys-apps/systemd-206 [204] USE="acl filecaps%* firmware-loader gudev http introspection kmod lzma pam (policykit) python tcpd xattr -audit -cryptsetup -doc -gcrypt -openrc -qrcode (-selinux) {-test} -vanilla (-keymap%*) (-static-libs%*)" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" 0 kB
[ebuild     U  ]  sys-apps/kmod-14-r1 [14] USE="lzma openrc%* static-libs tools zlib -debug -doc" 0 kB
[blocks B      ] sys-fs/udev ("sys-fs/udev" is blocking sys-apps/systemd-204, sys-apps/systemd-206)
[blocks B      ] sys-apps/systemd ("sys-apps/systemd" is blocking sys-fs/udev-206)

Total: 6 packages (3 upgrades, 3 new), Size of downloads: 2,299 kB
Conflict: 2 blocks (2 unsatisfied)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  (sys-apps/systemd-206::gentoo, ebuild scheduled for merge) pulled in by
    >=sys-apps/systemd-39 required by (media-sound/pulseaudio-4.0::gentoo, installed)
    systemd
    sys-apps/systemd required by (sys-power/upower-0.9.20-r2::gentoo, installed)
    sys-apps/systemd required by @selected
    >=sys-apps/systemd-197 required by (sys-fs/udisks-2.1.0::gentoo, installed)
    sys-apps/systemd required by (gnome-base/gvfs-1.14.2::gentoo, installed)
    sys-apps/systemd required by (sys-auth/polkit-0.111::gentoo, installed)
    sys-apps/systemd required by (net-wireless/bluez-4.101-r5::gentoo, installed)
    sys-apps/systemd required by (media-sound/mpd-0.17.4-r2::gentoo, installed)
    sys-apps/systemd required by (sys-apps/dbus-1.6.12::gentoo, installed)
    >=sys-apps/systemd-44-r1[pam] required by (sys-auth/pambase-20120417-r2::gentoo, installed)
    sys-apps/systemd required by (net-p2p/transmission-2.80::gentoo, installed)

  (sys-fs/udev-206::gentoo, ebuild scheduled for merge) pulled in by
    >=sys-fs/udev-206[gudev?,hwdb?,introspection?,kmod?,selinux?,static-libs?] (>=sys-fs/udev-206[gudev,hwdb,introspection,kmod,static-libs]) required by (virtual/udev-206::gentoo, ebuild scheduled for merge)