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

Calculating dependencies ... done!
Dependency resolution took 1.85 s (backtrack: 0/20).

[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     ] dev-lang/duktape-2.7.0-r3:0/2.7.0::gentoo  1003 KiB
[ebuild  N     ] media-libs/libogg-1.3.6::gentoo  USE="-static-libs" 430 KiB
[ebuild  N     ] media-libs/giflib-6.1.3:0/7::gentoo  USE="-doc -static-libs" 460 KiB
[ebuild  N     ] virtual/jpeg-100-r1::gentoo  USE="-static-libs" 0 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  N     ] dev-games/physfs-3.2.0::gentoo  USE="zip -7zip -doc -grp -hog -iso -mvl -qpak -slb -static-libs -vdf -wad" 238 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     ] media-libs/libmng-2.0.3-r1:0/2::gentoo  USE="-lcms" 930 KiB
[ebuild  N     ] media-libs/libmodplug-0.8.9.1::gentoo  234 KiB
[ebuild  N     ] media-libs/libvorbis-1.3.7-r2::gentoo  USE="-static-libs -test" 1176 KiB
[ebuild  N     ] media-libs/devil-1.7.8-r6::gentoo  USE="X gif jpeg mng opengl png tiff -allegro -glut -sdl -static-libs -xpm" CPU_FLAGS_X86="sse sse2 sse3" 2004 KiB
[ebuild  N     ] media-plugins/mpg123-output-plugins-1.33.7::gentoo  USE="alsa ipv6 (-coreaudio) -int-quality -jack -nas -oss -portaudio -pulseaudio -sdl -verify-sig" CPU_FLAGS_X86="mmx sse -3dnow -3dnowext" 1100 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     ] app-eselect/eselect-mpg123-0.1-r1::gentoo  0 KiB
[ebuild  N     ] media-sound/mpg123-base-1.33.7::gentoo  USE="alsa ipv6 (-coreaudio) -int-quality -jack -nas -oss -portaudio -pulseaudio -sdl -verify-sig" CPU_FLAGS_X86="sse (-3dnow) (-3dnowext) (-mmx)" 0 KiB
[ebuild  N     ] media-sound/mpg123-1.33.7::gentoo  USE="alsa (-coreaudio) -jack -nas -oss -portaudio -pulseaudio -sdl" 0 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     ] media-libs/libsdl-1.2.78::gentoo  USE="X alsa joystick opengl sound video -test" 487 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-engines/love-0.8.0-r100:0.8::gentoo  LUA_SINGLE_TARGET="lua5-1" 1004 KiB
[ebuild  N     ] games-arcade/mrrescue-1.02b-r2::gentoo  11601 KiB

Total: 29 packages (28 new, 1 in new slot), Size of downloads: 31576 KiB

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by games-engines/love-0.8.0-r100::gentoo
# required by games-arcade/mrrescue-1.02b-r2::gentoo
# required by =games-arcade/mrrescue-1.02b-r2 (argument)
>=media-libs/devil-1.7.8-r6 mng