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

Calculating dependencies ... done!
Dependency resolution took 2.01 s (backtrack: 0/20).

[ebuild  N     ] dev-lang/duktape-2.7.0-r3:0/2.7.0::gentoo  1003 KiB
[ebuild  N     ] media-libs/alsa-topology-conf-1.2.5.1-r1::gentoo  USE="-verify-sig" 12 KiB
[ebuild  N     ] media-libs/alsa-ucm-conf-1.2.16.1::gentoo  USE="-verify-sig" 83 KiB
[ebuild  N     ] media-libs/libogg-1.3.6::gentoo  USE="-static-libs" 430 KiB
[ebuild  N     ] dev-build/b2-5.5.3::gentoo  USE="-examples" 1198 KiB
[ebuild  N     ] net-libs/enet-1.3.18:1.3/8::gentoo  USE="-static-libs" 720 KiB
[ebuild  N     ] net-libs/miniupnpc-2.3.3-r1:0/21::gentoo  USE="-verify-sig" 138 KiB
[ebuild  N     ] x11-libs/libXcursor-1.2.3::gentoo  USE="-doc" 286 KiB
[ebuild  N     ] acct-group/rtkit-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-group/polkitd-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/rtkit-0-r3::gentoo  0 KiB
[ebuild  N     ] acct-user/polkitd-0-r3::gentoo  0 KiB
[ebuild  NS    ] dev-build/autoconf-2.13-r9:2.1::gentoo [2.72-r6:2.72::gentoo] USE="-test% (-verify-sig%)" 434 KiB
[ebuild  N     ] dev-libs/libzip-1.12.1:0/5::gentoo  USE="bzip2 ssl -gnutls -lzma -test -tools -zstd" 795 KiB
[ebuild  N     ] media-libs/alsa-lib-1.2.16.1::gentoo  USE="python -debug -doc -verify-sig" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13 (-python3_15)" 1104 KiB
[ebuild  N     ] dev-libs/boost-1.91.0-r2:0/1.91.0::gentoo  USE="bzip2 context nls python stacktrace zlib -debug -doc -icu -lzma -mpi -numpy -test -test-full -tools -zstd" PYTHON_TARGETS="python3_14 -python3_12 -python3_13" 199785 KiB
[ebuild  N     ] media-libs/libvorbis-1.3.7-r2::gentoo  USE="-static-libs -test" 1176 KiB
[ebuild  N     ] net-libs/gloox-1.0.28:0/18::gentoo  USE="ssl xhtmlim zlib -debug -examples -gnutls -idn -static-libs -test" 712 KiB
[ebuild  N     ] dev-libs/nspr-4.40::gentoo  USE="-debug" 986 KiB
[ebuild  NS    ] dev-lang/lua-5.3.6-r102:5.3::gentoo [5.4.8:5.4::gentoo] USE="deprecated readline" 529 KiB
[ebuild  NS    ] dev-lang/lua-5.1.5-r200:5.1::gentoo [5.4.8:5.4::gentoo] USE="deprecated readline" 389 KiB
[ebuild  N     ] dev-lua/luasocket-3.1.0::gentoo  USE="-doc" LUA_TARGETS="lua5-1 lua5-3 -lua5-4 -luajit" 329 KiB
[ebuild  N     ] dev-util/cbindgen-0.29.4::gentoo  USE="-debug -test" 6453 KiB
[ebuild  N     ] dev-lang/spidermonkey-128.14.0:128::gentoo  USE="jit -clang -debug -test" LLVM_SLOT="21 -17 -18 -19 -20" 549548 KiB
[ebuild  N     ] dev-util/premake-5.0.0_beta7:5::gentoo  LUA_SINGLE_TARGET="lua5-3" 8301 KiB
[ebuild  N     ] media-libs/libsdl2-2.32.10::gentoo  USE="X alsa dbus haptic joystick opengl sound video (-aqua) (-custom-cflags) -doc -fcitx -gles1 -gles2 -ibus -jack -kms -libsamplerate -nas -oss -pipewire -pulseaudio -sndio -static-libs -test -udev -vulkan -wayland -xscreensaver" CPU_FLAGS_X86="mmx sse sse2 sse3 -3dnow" 7452 KiB
[ebuild  N     ] sys-auth/polkit-126-r3::gentoo  USE="nls pam -elogind -examples -gtk -introspection -kde (-selinux) (-systemd) -test" 446 KiB
[ebuild  N     ] sys-auth/rtkit-0.14::gentoo  USE="(-selinux) (-systemd)" 41 KiB
[ebuild  N     ] media-libs/openal-1.25.2::gentoo  USE="alsa dbus (-coreaudio) -debug -gui -jack -oss -pipewire -portaudio -pulseaudio -sdl -sndio" CPU_FLAGS_X86="sse sse2 sse4_1" 1107 KiB
[ebuild  N     ] games-strategy/0ad-0.28.0-r1::gentoo  USE="lobby -editor -nvtt (-pch) -test -verify-sig" 1542958 KiB

Total: 30 packages (27 new, 3 in new slots), Size of downloads: 2326402 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by dev-util/premake-5.0.0_beta7::gentoo[lua_single_target_lua5-3]
# required by games-strategy/0ad-0.28.0-r1::gentoo
# required by =games-strategy/0ad-0.28.0-r1 (argument)
>=dev-lua/luasocket-3.1.0 lua_targets_lua5-3