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

Calculating dependencies  ... ..... done!
[ebuild     U  ] x11-base/xorg-server-1.19.0:0/1.19.0::gentoo [1.18.4:0/1.18.4::gentoo] USE="glamor* suid udev xorg -dmx -doc -ipv6 -kdrive -libressl -minimal (-selinux) -static-libs -systemd -tslib -unwind -wayland -xephyr -xnest -xvfb" 0 KiB
[ebuild     U  ] x11-base/xorg-drivers-1.19::gentoo [1.18-r1::gentoo] INPUT_DEVICES="evdev keyboard mouse synaptics wacom -acecad -aiptek -elographics -fpit -hyperpen -joystick -libinput -mutouch -penmount -tslib -vmmouse -void" VIDEO_CARDS="i965%* intel -amdgpu -apm -ast -chips -cirrus -dummy -epson -fbdev -fglrx (-freedreno) (-geode) -glint -i128 (-i740) -mach64 -mga -neomagic -nouveau -nv -nvidia (-omap) (-omapfb) -qxl -r128 -radeon -radeonsi -rendition -s3 -s3virge -savage -siliconmotion -sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx) -tdfx (-tegra) -tga -trident -tseng -vesa -via -virtualbox -vmware (-voodoo)" 0 KiB
[ebuild  rR    ] x11-drivers/xf86-input-synaptics-1.8.3::gentoo  0 KiB
[ebuild  rR    ] x11-drivers/xf86-input-evdev-2.10.4::gentoo  0 KiB
[ebuild  rR    ] x11-drivers/xf86-input-keyboard-1.8.1::gentoo  0 KiB
[ebuild  rR    ] x11-drivers/xf86-input-mouse-1.9.1::gentoo  0 KiB
[ebuild  rR    ] x11-drivers/xf86-input-wacom-0.33.0::gentoo  USE="-debug" 0 KiB

Total: 7 packages (2 upgrades, 5 reinstalls), Size of downloads: 0 KiB

The following packages are causing rebuilds:

  (x11-base/xorg-server-1.19.0:0/1.19.0::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (x11-drivers/xf86-input-evdev-2.10.4:0/0::gentoo, ebuild scheduled for merge)
    (x11-drivers/xf86-input-synaptics-1.8.3:0/0::gentoo, ebuild scheduled for merge)
    (x11-drivers/xf86-input-keyboard-1.8.1:0/0::gentoo, ebuild scheduled for merge)
    (x11-drivers/xf86-input-mouse-1.9.1:0/0::gentoo, ebuild scheduled for merge)
    (x11-drivers/xf86-input-wacom-0.33.0:0/0::gentoo, ebuild scheduled for merge)