$ sudo emerge -av cinnamon                                                                                                           [17:16:06]

Local copy of remote index is up-to-date and will be used.

Local copy of remote index is up-to-date and will be used.

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

Calculating dependencies... done!

!!! The ebuild selected to satisfy "sys-auth/polkit[elogind]" has unmet requirements.
- sys-auth/polkit-0.115-r4::gentoo USE="consolekit elogind introspection nls pam -examples -gtk -jit -kde (-selinux) (-systemd) -test" ABI_X86="(64)"

  The following REQUIRED_USE flag constraints are unsatisfied:
    exactly-one-of ( consolekit elogind systemd )

(dependency required by "gnome-extra/cinnamon-session-4.0.0-r1::gentoo" [binary])
(dependency required by "gnome-extra/cinnamon-4.0.3-r2::gentoo" [binary])
(dependency required by "cinnamon" [argument])
FAIL: