virtual/udev
>=dev-libs/libgudev-232:=
>=dev-libs/glib-2.56:2
>=x11-libs/gtk+-2.91.1:3
>=media-libs/libcanberra-0.4[gtk3]
>=sys-apps/accountsservice-0.6.35
x11-libs/libxcb
sys-apps/keyutils:=

selinux?
      ( sys-libs/libselinux )

x11-libs/libX11
x11-libs/libXau
x11-base/xorg-server[-minimal]
x11-libs/libXdmcp

tcpd?
      ( >=sys-apps/tcp-wrappers-7.6 )

systemd?
      ( >=sys-apps/systemd-186:0=[pam] )

elogind?
      ( >=sys-auth/elogind-239.3[pam] )

plymouth?
      ( sys-boot/plymouth )

audit?
      ( sys-process/audit )

sys-libs/pam


sys-auth/pambase[elogind?
,systemd?
]
>=gnome-base/dconf-0.20
>=gnome-base/gnome-settings-daemon-3.1.4
gnome-base/gsettings-desktop-schemas
sys-apps/dbus
>=x11-misc/xdg-utils-1.0.2-r3
>=dev-libs/gobject-introspection-0.9.12:=
acct-group/gdm
acct-user/gdm
>=gnome-base/gnome-session-3.6
>=gnome-base/gnome-shell-3.1.90
x11-apps/xhost

accessibility?
      ( >=app-accessibility/orca-3.10 gnome-extra/mousetweaks )

fprint?
      ( sys-auth/fprintd[pam] )