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

Calculating dependencies ...

!!! Problem resolving dependencies for =sys-apps/fwupd-2.0.16
 done!
Dependency resolution took 0.83 s (backtrack: 0/20).


!!! The ebuild selected to satisfy "=sys-apps/fwupd-2.0.16" has unmet requirements.
- sys-apps/fwupd-2.0.16::gentoo USE="archive policykit -amdgpu -bash-completion -bluetooth -cbor -elogind -flashrom -gnutls -gtk-doc -introspection -lzma -minimal -modemmanager -nvme -protobuf (-seccomp) (-selinux) -spi -synaptics (-systemd) -test -tpm -uefi" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13"

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

  The above constraints are a subset of the following complete expression:
    exactly-one-of ( python_single_target_python3_12 python_single_target_python3_13 python_single_target_python3_14 ) exactly-one-of ( elogind minimal systemd ) minimal? ( !introspection ) spi? ( lzma ) seccomp? ( systemd ) synaptics? ( gnutls ) test? ( archive ) uefi? ( gnutls )