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

Calculating dependencies ... done!
Dependency resolution took 1.80 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/uthash-2.4.0::gentoo  USE="-test" 192 KiB
[ebuild  N     ] x11-libs/xcb-util-0.4.1::gentoo  262 KiB
[ebuild  N     ] x11-libs/xcb-util-wm-0.4.2::gentoo  279 KiB
[ebuild  NS    ] app-text/docbook-xml-dtd-4.3-r2:4.3::gentoo [4.1.2-r7:4.1.2::gentoo, 4.2-r3:4.2::gentoo, 4.4-r3:4.4::gentoo, 4.5-r2:4.5::gentoo] 82 KiB
[ebuild  N     ] kde-frameworks/extra-cmake-modules-6.31.0::gentoo  USE="-doc -test" 339 KiB
[ebuild  N     ] dev-cpp/nlohmann_json-3.12.0-r1::gentoo  USE="-test" 9452 KiB
[ebuild  N     ] x11-libs/xcb-imdkit-1.0.9:5::gentoo  568 KiB
[ebuild  N     ] app-text/hunspell-1.7.2-r1:0/1.7::gentoo  USE="ncurses nls readline -static-libs" L10N="-af -bg -ca -cs -cy -da -de -de-1901 -el -en -eo -es -et -fo -fr -ga -gl -he -hr -hu -ia -id -is -it -kk -km -ku -lt -lv -mi -mk -ms -nb -nl -nn -pl -pt -pt-BR -ro -ru -sk -sl -sq -sv -sw -tn -uk -zu" 1501 KiB
[ebuild  N     ] x11-misc/xkeyboard-config-2.48::gentoo  USE="-test" 931 KiB
[ebuild  N     ] app-text/iso-codes-4.20.1::gentoo  16024 KiB
[ebuild  N     ] x11-libs/libxkbfile-1.2.0::gentoo  57 KiB
[ebuild  N     ] app-text/enchant-2.8.16:2::gentoo  USE="hunspell -aspell -nuspell -test -voikko" 1237 KiB
[ebuild  N     ] x11-libs/gdk-pixbuf-2.44.8:2::gentoo  USE="gif jpeg tiff -gtk-doc -introspection -test" 5897 KiB
[ebuild  N     ] x11-libs/libxkbcommon-1.13.2::gentoo  USE="X -doc -static-libs -test -tools -wayland" 1215 KiB
[ebuild  N     ] app-i18n/fcitx-5.1.21:5::gentoo  USE="X autostart emoji enchant keyboard server -doc -presage -system-yoga (-systemd) -test -wayland" 10263 KiB

Total: 15 packages (14 new, 1 in new slot), Size of downloads: 48292 KiB