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

Calculating dependencies ... done!
Dependency resolution took 3.37 s (backtrack: 0/20).


!!! Multiple package instances within a single package slot have been pulled
!!! into the dependency graph, resulting in a slot conflict:

dev-libs/glib:2

  (dev-libs/glib-2.84.4-r2:2/2::gentoo, installed) USE="dbus elf mime xattr -debug -doc -introspection (-selinux) -static-libs -sysprof -systemtap -test -utils" pulled in by
    (no parents that aren't satisfied by other packages in this slot)

  (dev-libs/glib-2.88.3:2/2::gentoo, ebuild scheduled for merge) USE="dbus elf introspection mime xattr -debug -doc (-selinux) -static-libs -sysprof -systemtap -test -utils" pulled in by
    >=dev-libs/glib-2.82.0:2[introspection] required by (dev-libs/gobject-introspection-1.86.0-r1:0/0::gentoo, ebuild scheduled for merge) USE="-doctool -gtk-doc -test" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13"
                             ^^^^^^^^^^^^^                                                                                                                                                                                                                                                                                                                                              

dev-libs/libxml2:2

  (dev-libs/libxml2-2.15.2:2/16::gentoo, installed) USE="python readline -doc -icu -static-libs -test" PYTHON_TARGETS="python3_13 -python3_11 -python3_12 -python3_14" pulled in by
    (no parents that aren't satisfied by other packages in this slot)

  (dev-libs/libxml2-2.15.4:2/16::gentoo, ebuild scheduled for merge) USE="icu python readline -doc -static-libs -test" PYTHON_TARGETS="python3_14 -python3_12 -python3_13" pulled in by
    dev-libs/libxml2:=[icu] required by (dev-qt/qtwebengine-6.11.2:6/6.11.2::gentoo, ebuild scheduled for merge) USE="alsa jumbo-build opengl pdfium qml system-icu widgets -accessibility -bindist -custom-cflags -designer -geolocation -kerberos -pulseaudio -screencast -test -vaapi -vulkan -webdriver"
                       ^^^                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

dev-libs/openssl:0

  (dev-libs/openssl-3.5.5-r2:0/3::gentoo, installed) USE="asm quic -fips -ktls -rfc3779 -sctp -static-libs -test -tls-compression -vanilla -verify-sig -weak-ssl-ciphers" CPU_FLAGS_X86="(sse2)" pulled in by
    (no parents that aren't satisfied by other packages in this slot)

  (dev-libs/openssl-3.6.5:0/3::gentoo, ebuild scheduled for merge) USE="asm quic -fips -ktls -rfc3779 -sctp -static-libs -test -tls-compression -vanilla -verify-sig -weak-ssl-ciphers" CPU_FLAGS_X86="(sse2)" pulled in by
    >=dev-libs/openssl-3.5.9:0= required by (net-libs/nodejs-26.12.0:0/26::gentoo, ebuild scheduled for merge) USE="icu inspector npm snapshot ssl system-ssl -debug -doc (-lto) -pax-kernel -system-icu -temporal -test" CPU_FLAGS_X86="sse2"
    ^^                 ^^^^^^^^                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

net-dns/avahi:0

  (net-dns/avahi-0.9_rc3:0/0::gentoo, installed) USE="dbus gdbm nls python -autoipd -bookmarks -doc -gtk -howl-compat -introspection -mdnsresponder-compat -qt6 (-selinux) (-systemd) -test" PYTHON_SINGLE_TARGET="python3_13 -python3_11 -python3_12 -python3_14" pulled in by
    (no parents that aren't satisfied by other packages in this slot)

  (net-dns/avahi-0.9_rc5:0/0::gentoo, ebuild scheduled for merge) USE="dbus gdbm mdnsresponder-compat nls python -autoipd -bookmarks -doc -gtk -howl-compat -introspection -qt6 (-selinux) (-systemd) -test" PYTHON_SINGLE_TARGET="python3_14 -python3_12 -python3_13 (-python3_15)" pulled in by
    net-dns/avahi[mdnsresponder-compat] required by (kde-frameworks/kdnssd-6.31.0:6/6.31::gentoo, ebuild scheduled for merge) USE="-debug -minimal -test"
                  ^^^^^^^^^^^^^^^^^^^^                                                                                                                                                                                                                


It may be possible to solve this problem by using package.mask to
prevent one of those packages from being selected. However, it is also
possible that conflicting dependencies exist such that they are
impossible to satisfy simultaneously.  If such a conflict exists in
the dependencies of two different packages, then those packages can
not be installed simultaneously.

For more information, see MASKED PACKAGES section in the emerge man
page or refer to the Gentoo Handbook.


The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by x11-misc/xdg-utils-1.2.1-r11::gentoo
# required by kde-frameworks/kf-env-6::gentoo
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=app-text/xmlto-0.0.28-r11 text
# required by kde-apps/yakuake-26.08.2::gentoo
# required by kde-apps/kdeutils-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[utils]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtbase-6.11.2-r2 libproxy icu wayland
# required by dev-libs/gobject-introspection-1.86.0-r1::gentoo
# required by dev-lang/vala-0.56.19::gentoo
# required by net-libs/libaccounts-glib-1.27-r1::gentoo
# required by net-libs/accounts-qt-1.17-r2::gentoo
# required by kde-apps/kaccounts-integration-26.08.2::gentoo
# required by kde-apps/kaccounts-providers-26.08.2::gentoo
# required by kde-misc/kio-gdrive-26.08.2::gentoo
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[webengine]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-libs/glib-2.88.3 introspection
# required by dev-qt/qtwebengine-6.11.2::gentoo
# required by net-p2p/ktorrent-26.08.2::gentoo[webengine,-rss]
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[bittorrent]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-libs/libxml2-2.15.4 icu
# required by net-libs/nodejs-26.12.0::gentoo
# required by dev-qt/qtwebengine-6.11.2::gentoo
# required by net-p2p/ktorrent-26.08.2::gentoo[webengine,-rss]
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[bittorrent]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-cpp/simdutf-9.2.1 atomic-base64
# required by kde-misc/kweather-26.08.2::gentoo
# required by kde-apps/kdeutils-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[utils]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtcharts-6.11.2 qml
# required by kde-plasma/libplasma-6.8.0::gentoo
# required by kde-misc/kdeconnect-26.08.2::gentoo
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[zeroconf]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qt5compat-6.11.2 qml
# required by kde-misc/kweather-26.08.2::gentoo
# required by kde-apps/kdeutils-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[utils]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtpositioning-6.11.2 geoclue
# required by app-crypt/keepsecret-26.08.2::gentoo
# required by kde-apps/kdeutils-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[utils]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=kde-frameworks/kconfig-6.31.0 qml
# required by kde-frameworks/kauth-6.31.0::gentoo[policykit]
# required by kde-apps/k3b-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo[cdrom]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=kde-frameworks/kwindowsystem-6.31.0 wayland
# required by media-sound/krecorder-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtmultimedia-6.11.2 qml
# required by kde-frameworks/qqc2-desktop-style-6.31.0::gentoo
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=kde-frameworks/sonnet-6.31.0 qml
# required by app-misc/francis-26.08.2::gentoo
# required by kde-apps/kdeutils-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[utils]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtdeclarative-6.11.2-r1 svg
# required by kde-frameworks/kdnssd-6.31.0::gentoo[-minimal]
# required by net-p2p/ktorrent-26.08.2::gentoo[zeroconf]
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[bittorrent]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=net-dns/avahi-0.9_rc5 mdnsresponder-compat
# required by net-im/neochat-26.08.2::gentoo
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[webengine]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtspeech-6.11.2 qml
# required by kde-frameworks/purpose-6.31.0::gentoo
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=kde-frameworks/prison-6.31.0 qml
# required by dev-qt/qtwebview-6.11.2::gentoo
# required by net-im/neochat-26.08.2::gentoo
# required by kde-apps/kdenetwork-meta-26.08.2::gentoo[webengine]
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[network]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=dev-qt/qtwebengine-6.11.2 qml
# required by media-sound/elisa-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=kde-frameworks/kfilemetadata-6.31.0 taglib
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=media-video/ffmpeg-8.1.3 sdl
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=media-libs/mlt-7.40.0 ffmpeg sdl qt6 frei0r xml
# required by media-plugins/frei0r-plugins-2.4.1-r1::gentoo[facedetect]
# required by media-libs/mlt-7.40.0::gentoo[frei0r]
# required by kde-apps/kdenlive-26.08.2::gentoo
# required by kde-apps/kdemultimedia-meta-26.08.2::gentoo
# required by kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]
# required by =kde-apps/kde-apps-meta-26.08.2 (argument)
>=media-libs/opencv-4.14.0 features2d contribdnn contrib

!!! The ebuild selected to satisfy ">=media-libs/opencv-2.3.0:=[contrib,contribdnn,features2d,ffmpeg,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_s390_32(-)?,abi_s390_64(-)?]" has unmet requirements.
- media-libs/opencv-4.14.0::gentoo USE="eigen ffmpeg gif jpeg jpeg2k opengl openmp png python tiff truetype -atlas -avif -contrib -contribcvv -contribdnn -contribfreetype -contribhdf (-contribovis) -contribsfm -contribxfeatures2d -cuda -cudnn -debug -doc -examples -features2d -gdal -gflags -glog -gphoto2 -gstreamer -gtk3 -ieee1394 -jasper -java -lapack -mkl -non-free -opencl -opencvapps -openexr -openni -openni2 -qt6 -quirc -spng -tbb -tesseract -test -testprograms -v4l -vaapi -vtk -vulkan -wayland -webp -wechat-qrcode -xine" CPU_FLAGS_X86="avx avx2 avx512bw avx512cd avx512dq avx512f avx512vl f16c fma3 popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3 -avx512_4fmaps -avx512_4vnniw -avx512_bitalg -avx512_vbmi2 -avx512_vnni -avx512_vpopcntdq -avx512er -avx512ifma -avx512pf -avx512vbmi" PYTHON_TARGETS="python3_14 -python3_12 -python3_13" VIDEO_CARDS="-intel"

  The following REQUIRED_USE flag constraints are unsatisfied:
    opengl? ( any-of ( gtk3 qt6 wayland ) )

  The above constraints are a subset of the following complete expression:
    amd64? ( cpu_flags_x86_sse cpu_flags_x86_sse2 cpu_flags_x86_avx2? ( cpu_flags_x86_f16c ) cpu_flags_x86_f16c? ( cpu_flags_x86_avx ) cpu_flags_x86_avx512er? ( cpu_flags_x86_avx512pf ) cpu_flags_x86_avx512pf? ( cpu_flags_x86_avx512er ) cpu_flags_x86_avx512_4fmaps? ( cpu_flags_x86_avx512_4fmaps ) cpu_flags_x86_avx512_4vnniw? ( cpu_flags_x86_avx512_4vnniw ) ) atlas? ( lapack ) cuda? ( contrib ) cudnn? ( cuda ) gflags? ( contrib ) glog? ( contrib ) contribcvv? ( contrib qt6 ) contribfreetype? ( contrib ) contribhdf? ( contrib ) contribovis? ( contrib ) contribsfm? ( contrib eigen gflags glog ) contribxfeatures2d? ( contrib ) jasper? ( !abi_x86_32 ) java? ( python ) mkl? ( lapack ) opengl? ( any-of ( gtk3 qt6 wayland ) ) python? ( any-of ( python_targets_python3_12 python_targets_python3_13 python_targets_python3_14 ) ) tesseract? ( contrib ) testprograms? ( test ) test? ( any-of ( ffmpeg gstreamer ) jpeg png tiff features2d ) wayland? ( !vtk ) wechat-qrcode? ( contribdnn )

(dependency required by "media-plugins/frei0r-plugins-2.4.1-r1::gentoo" [ebuild])
(dependency required by "media-libs/mlt-7.40.0::gentoo[frei0r]" [ebuild])
(dependency required by "kde-apps/kdenlive-26.08.2::gentoo" [ebuild])
(dependency required by "kde-apps/kdemultimedia-meta-26.08.2::gentoo" [ebuild])
(dependency required by "kde-apps/kde-apps-meta-26.08.2::gentoo[multimedia]" [ebuild])
(dependency required by "=kde-apps/kde-apps-meta-26.08.2" [argument])