emerge --ask --update --deep --changed-use --with-bdeps=y --keep-going --verbose @world

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

Calculating dependencies     ... done!
[ebuild   R    ] dev-libs/libgpg-error-1.46-r1::dantrell-gnome [1.46-r1::gentoo] USE="nls -common-lisp -static-libs -test -verify-sig" ABI_X86="32 (64) (-x32)" 1 KiB
[ebuild  N     ] dev-lang/spidermonkey-78.15.0-r1:78/15.0::dantrell-gnome  USE="jit -clang -debug -lto -test" 0 KiB
[ebuild     UD ] gnome-base/librsvg-2.48.10-r1:2::dantrell-gnome [2.55.1:2::gentoo] USE="introspection vala -gtk-doc (-debug%)" ABI_X86="32 (64) (-x32)" 0 KiB
[ebuild     UD ] x11-themes/adwaita-icon-theme-42.0_p2::dantrell-gnome-42 [43_p1::gentoo] USE="branding" 16’724 KiB
[ebuild     UD*] sys-auth/polkit-0.120-r2::dantrell-gnome [121::gentoo] USE="elogind%* gtk introspection kde pam -ck% (-consolekit) -examples (-selinux) (-systemd) -test (-duktape%*)" 0 KiB
[ebuild  N     ] gnome-base/gnome-control-center-42.4:2::dantrell-gnome-42  USE="bluetooth cups elogind gnome-online-accounts ibus networkmanager wayland -debug -kerberos (-systemd) -test" INPUT_DEVICES="-wacom" 0 KiB
[ebuild   R    ] media-gfx/gimp-2.10.32-r3:0/2::gentoo  USE="alsa gnome* mng udev -aalib (-aqua) -debug -doc -heif -jpeg2k -jpegxl -openexr -postscript -test -unwind -vector-icons -webp -wmf -xpm" CPU_FLAGS_X86="mmx sse" 0 KiB
[ebuild   R    ] app-office/libreoffice-7.3.7.2::gentoo  USE="accessibility bluetooth branding cups dbus eds* gtk kde ldap* mariadb pdfimport vulkan (-base) -clang (-coinmp) -custom-cflags -debug (-firebird) -googledrive -gstreamer -java -odk -postgres -test" LIBREOFFICE_EXTENSIONS="-nlpsolver -scripting-beanshell -scripting-javascript -wiki-publisher" PYTHON_SINGLE_TARGET="python3_10 -python3_8 -python3_9 -python3_11" 0 KiB
[ebuild   R   *] app-emulation/libvirt-glib-4.0.0::dantrell-gnome [4.0.0::gentoo] USE="introspection vala -gtk-doc -test" 0 KiB
[ebuild   R    ] app-emulation/qemu-7.1.0-r2::gentoo  USE="accessibility aio alsa bzip2 curl fdt filecaps gnutls gtk jpeg ncurses nls opengl oss pam pin-upstream-blobs png pulseaudio sdl slirp smartcard* spice udev usb usbredir vhost-net virgl virtfs vnc xattr -bpf (-capstone) -debug -doc -fuse -glusterfs -infiniband -io-uring -iscsi -jack -jemalloc -lzo -multipath -nfs -numa -plugins -python -rbd -sasl -sdl-image (-selinux) -snappy -ssh -static -static-user -systemtap -test -vde -vte -xen -zstd" PYTHON_TARGETS="python3_10 -python3_8 -python3_9 -python3_11" QEMU_SOFTMMU_TARGETS="x86_64 -aarch64 -alpha -arm -avr -cris -hppa -i386 -loongarch64 -m68k -microblaze -microblazeel -mips -mips64 -mips64el -mipsel -nios2 -or1k -ppc -ppc64 -riscv32 -riscv64 -rx -s390x -sh4 -sh4eb -sparc -sparc64 -tricore -xtensa -xtensaeb" QEMU_USER_TARGETS="-aarch64 -aarch64_be -alpha -arm -armeb -cris -hexagon -hppa -i386 -loongarch64 -m68k -microblaze -microblazeel -mips -mips64 -mips64el -mipsel -mipsn32 -mipsn32el -nios2 -or1k -ppc -ppc64 -ppc64le -riscv32 -riscv64 -s390x -sh4 -sh4eb -sparc -sparc32plus -sparc64 -x86_64 -xtensa -xtensaeb" 0 KiB
[ebuild     UD ] net-misc/spice-gtk-0.39-r2::dantrell-gnome [0.41-r1::gentoo] USE="gtk3 introspection (policykit) smartcard* usbredir vala* wayland -lz4 -mjpeg -sasl -webdav" 0 KiB
[ebuild     UD ] app-emulation/spice-0.14.3-r1::dantrell-gnome [0.15.0::gentoo] USE="smartcard* -gstreamer -lz4 -sasl -static-libs -test" 0 KiB
[ebuild   R    ] net-misc/remmina-1.4.27::gentoo  USE="appindicator crypt cups gnome-keyring* kwallet nls rdp spice vnc -examples -gvnc -python -ssh -telemetry -webkit -zeroconf" PYTHON_SINGLE_TARGET="python3_10 -python3_9 -python3_11" 0 KiB

Total: 13 packages (5 downgrades, 2 new, 6 reinstalls), Size of downloads: 16’725 KiB

WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict:

media-libs/libpng:0

  (media-libs/libpng-1.6.39:0/16::gentoo, ebuild scheduled for merge) USE="apng -static-libs" ABI_X86="32 (64) (-x32)" CPU_FLAGS_X86="sse" conflicts with
    media-libs/libpng:=[-apng(-)] required by (www-client/chromium-108.0.5359.124:0/stable::gentoo, installed) USE="X cups hangouts js-type-check official (pic) proprietary-codecs pulseaudio qt5 suid system-av1 system-harfbuzz system-icu system-png vaapi wayland (-component-build) -custom-cflags -debug -gtk4 (-headless) -kerberos -libcxx -lto (-pgo) -screencast (-selinux) (-system-ffmpeg) -widevine" ABI_X86="(64)" L10N="de el fr it -af -am -ar -bg -bn -ca -cs -da -en-GB -es -es-419 -et -fa -fi -fil -gu -he -hi -hr -hu -id -ja -kn -ko -lt -lv -ml -mr -ms -nb -nl -pl -pt-BR -pt-PT -ro -ru -sk -sl -sr -sv -sw -ta -te -th -tr -uk -ur -vi -zh-CN -zh-TW"

    media-libs/libpng:0/16=[-apng(-)] required by (www-client/chromium-108.0.5359.124:0/stable::gentoo, installed) USE="X cups hangouts js-type-check official (pic) proprietary-codecs pulseaudio qt5 suid system-av1 system-harfbuzz system-icu system-png vaapi wayland (-component-build) -custom-cflags -debug -gtk4 (-headless) -kerberos -libcxx -lto (-pgo) -screencast (-selinux) (-system-ffmpeg) -widevine" ABI_X86="(64)" L10N="de el fr it -af -am -ar -bg -bn -ca -cs -da -en-GB -es -es-419 -et -fa -fi -fil -gu -he -hi -hr -hu -id -ja -kn -ko -lt -lv -ml -mr -ms -nb -nl -pl -pt-BR -pt-PT -ro -ru -sk -sl -sr -sv -sw -ta -te -th -tr -uk -ur -vi -zh-CN -zh-TW"


media-libs/harfbuzz:0

  (media-libs/harfbuzz-5.3.1-r1:0/4.0.0::gentoo, ebuild scheduled for merge) USE="cairo glib icu introspection truetype -debug -doc -experimental -graphite -test" ABI_X86="32 (64) (-x32)" conflicts with
    >=media-libs/harfbuzz-0.9.42:=[graphite,icu] required by (app-office/libreoffice-7.3.7.2:0/0::gentoo, ebuild scheduled for merge) USE="accessibility bluetooth branding cups dbus eds gtk kde ldap mariadb pdfimport vulkan (-base) -clang (-coinmp) -custom-cflags -debug (-firebird) -googledrive -gstreamer -java -odk -postgres -test" ABI_X86="(64)" LIBREOFFICE_EXTENSIONS="-nlpsolver -scripting-beanshell -scripting-javascript -wiki-publisher" PYTHON_SINGLE_TARGET="python3_10 -python3_11 -python3_8 -python3_9"
                                   ^^^^^^^^


Would you like to merge these packages? [Yes/No]