Running: emerge @preserved-rebuild my system wants to install "net-print/cups-2.2.6" unstable. I don't know why?
emerge -avq @preserved-rebuild [ebuild R ] dev-perl/DBD-Pg-3.5.3 [ebuild U ] net-print/cups-2.2.6 [2.1.4] USE="X dbus java pam ssl threads -acl -debug -kerberos -lprng-compat -python (-selinux) -static-libs -systemd -usb -xinetd -zeroconf (-linguas_ca%*) (-linguas_cs%*) (-linguas_de%*) (-linguas_es%*) (-linguas_fr%*) (-linguas_it%*) (-linguas_ja%*) (-linguas_ru%*)" ABI_X86="(64) -32* (-x32)" PYTHON_TARGETS="python2_7" [ebuild R ] net-wireless/bluez-5.48-r1 USE="alsa cups mesh obex readline udev -debug -deprecated -doc -experimental -extra-tools (-selinux) -systemd {-test} -test-programs -user-session" ABI_X86="(64) -32 (-x32)" PYTHON_TARGETS="python2_7" [ebuild R ] net-misc/nxclient-3.5.0.7 USE="cups" [ebuild R ] net-ftp/gftp-2.0.19-r3 USE="gtk ssl -libressl" !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: net-print/cups:0 (net-print/cups-2.2.6:0/0::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (net-print/cups-2.1.4:0/0::gentoo, installed) pulled in by net-print/cups[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?] required by (dev-qt/qtgui-4.8.7:4/4::gentoo, installed) The following keyword changes are necessary to proceed: (see "package.accept_keywords" in the portage(5) man page for more details) # required by @preserved-rebuild (argument) =net-print/cups-2.2.6 ~amd64 -- Thelma