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

Calculating dependencies  .. .......... ............. .. .............. ... done!
Dependency resolution took 312.41 s (backtrack: 9/20).

[ebuild     U  ] llvm-core/llvm-common-21.1.8::gentoo [20.1.8::gentoo] USE="-emacs -verify-sig" 155233 KiB
[ebuild  N     ] acct-group/cuse-0::gentoo  0 KiB
[ebuild  NS    ] llvm-core/clang-linker-config-21:21::gentoo [20:20::gentoo] USE="-default-lld" 0 KiB
[ebuild     U  ] llvm-core/clang-common-21.1.8::gentoo [20.1.8-r1::gentoo] USE="cet -bootstrap-prefix -default-compiler-rt -default-libcxx -default-lld -emacs -hardened -llvm-libunwind -verify-sig" 0 KiB
[ebuild     U  ] dev-util/spirv-llvm-translator-20.1.8:20::gentoo [20.1.5:20::gentoo] USE="-test" ABI_X86="(64) -32 (-x32)" LLVM_SLOT="20" 1781 KiB
[ebuild     U  ] sys-apps/coreutils-9.9::gentoo [9.8-r1::gentoo] USE="acl nls openssl xattr -caps -gmp -hostname -kill -multicall (-selinux) (-split-usr) -static -test -test-full -vanilla -verify-sig" 6148 KiB
[ebuild     U  ] llvm-runtimes/openmp-21.1.8:0/21.1::gentoo [20.1.8:0/20.1::gentoo] USE="-debug -gdb-plugin -hwloc -ompt -test -verify-sig" ABI_X86="32 (64) (-x32)" PYTHON_SINGLE_TARGET="python3_13 -python3_11 -python3_12 -python3_14" 0 KiB
[ebuild  NS    ] llvm-runtimes/clang-rtlib-config-21:21::gentoo [20:20::gentoo] USE="-default-compiler-rt" ABI_X86="32 (64)" 0 KiB
[ebuild  NS    ] llvm-runtimes/clang-stdlib-config-21:21::gentoo [20:20::gentoo] USE="-default-libcxx" 0 KiB
[ebuild  NS    ] llvm-runtimes/clang-unwindlib-config-21:21::gentoo [20:20::gentoo] USE="-default-compiler-rt -llvm-libunwind" 0 KiB
[ebuild  N     ] media-libs/kvazaar-2.3.0-r1:0/6::gentoo  USE="-static-libs -test" ABI_X86="(64) -32 (-x32)" 581 KiB
[ebuild  NS    ] dev-lang/rust-bin-1.91.0:1.91.0::gentoo [1.86.0-r1:1.86.0::gentoo, 1.89.0:1.89.0::gentoo] USE="rustfmt (-big-endian) -clippy -doc (-prefix) -rust-analyzer -rust-src -verify-sig" ABI_X86="(64) -32 (-x32)" CPU_FLAGS_X86="sse2" LLVM_SLOT="(21%*) (-20%*)" 187667 KiB
[ebuild     U  ] sys-fs/fuse-common-3.10.4-r2::gentoo [3.10.4::gentoo] 0 KiB
[ebuild     U  ] dev-python/pyproject-metadata-0.10.0::gentoo [0.9.1::gentoo] USE="-test -verify-provenance%" PYTHON_TARGETS="python3_13 (-pypy3_11) -python3_11 -python3_12 (-python3_13t) -python3_14 (-python3_14t)" 40 KiB
[ebuild     U  ] sci-libs/blas-lapack-aux-wrapper-6::gentoo [4::gentoo] USE="-index64 -test" 10 KiB
[ebuild     U  ] net-libs/libsoup-3.6.5-r1:3.0::gentoo [3.6.5:3.0::gentoo] USE="brotli introspection ssl sysprof vala -gssapi -gtk-doc -samba -test" ABI_X86="(64) -32 (-x32)" 0 KiB
[ebuild     U  ] llvm-runtimes/compiler-rt-20.1.8-r1:20::gentoo [20.1.8:20::gentoo] USE="atomic-builtins (clang) -debug -test -verify-sig" ABI_X86="32 (64)" 0 KiB
[ebuild     U  ] llvm-runtimes/compiler-rt-sanitizers-20.1.8-r1:20::gentoo [20.1.8:20::gentoo] USE="asan cfi (clang) ctx-profile dfsan gwp-asan hwasan libfuzzer lsan memprof msan nsan orc profile rtsan safestack scudo tsan ubsan xray -debug (-shadowcallstack) -test -verify-sig" ABI_X86="32 (64)" 0 KiB
[ebuild  NS    ] llvm-core/llvm-21.1.8:21/21.1::gentoo [20.1.8:20/20.1::gentoo] USE="binutils-plugin libffi xml zstd -debug (-debuginfod) -doc -exegesis -libedit -test -verify-sig -z3" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="(AArch64) (AMDGPU) (ARM) (AVR) (BPF) DirectX (Hexagon) (Lanai) (LoongArch) (MSP430) (Mips) (NVPTX) (PowerPC) (RISCV) (SPIRV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86) (XCore) -ARC -CSKY -M68k -Xtensa" 297 KiB
[ebuild     U  ] llvm-core/llvmgold-21::gentoo [20::gentoo] 0 KiB
[ebuild  NS    ] llvm-core/llvm-toolchain-symlinks-21:21::gentoo [20-r1:20::gentoo] USE="-multilib-symlinks -native-symlinks*" 0 KiB
[ebuild  NS    ] llvm-core/clang-21.1.8:21/21.1::gentoo [20.1.8:20/20.1::gentoo] USE="extra (pie) static-analyzer xml -debug -doc (-ieee-long-double) -test -verify-sig" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="(AArch64) (AMDGPU) (ARM) (AVR) (BPF) DirectX (Hexagon) (Lanai) (LoongArch) (MSP430) (Mips) (NVPTX) (PowerPC) (RISCV) (SPIRV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86) (XCore) -ARC -CSKY -M68k -Xtensa" PYTHON_SINGLE_TARGET="python3_13 -python3_12 -python3_14 (-python3_11%)" 0 KiB
[ebuild  NS    ] llvm-core/clang-toolchain-symlinks-21:21::gentoo [20:20::gentoo] USE="-gcc-symlinks -multilib-symlinks -native-symlinks*" 0 KiB
[ebuild  NS    ] llvm-runtimes/compiler-rt-21.1.8:21::gentoo [20.1.8:20::gentoo] USE="atomic-builtins (clang) -debug -test -verify-sig" ABI_X86="32 (64)" 0 KiB
[ebuild  NS    ] llvm-runtimes/compiler-rt-sanitizers-21.1.8:21::gentoo [20.1.8:20::gentoo] USE="asan cfi (clang) ctx-profile dfsan gwp-asan hwasan libfuzzer lsan memprof msan nsan orc profile rtsan safestack scudo tsan ubsan xray -debug (-shadowcallstack) -test -verify-sig" ABI_X86="32 (64)" 0 KiB
[ebuild  NS    ] llvm-runtimes/clang-runtime-21.1.8:21::gentoo [20.1.8-r1:20::gentoo] USE="compiler-rt openmp sanitize -default-compiler-rt -default-libcxx -default-lld -libcxx -llvm-libunwind -offload -polly" ABI_X86="32 (64) (-x32)" 0 KiB
[ebuild     U  ] app-editors/vscode-1.107.1::gentoo [1.107.0::gentoo] USE="egl wayland -kerberos" L10N="af am ar bg bn ca cs da de el en-GB es es-419 et fa fi fil fr gu he hi hr hu id it 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" 159326 KiB
[ebuild     U  ] app-admin/system-config-printer-1.5.18-r3::gentoo [1.5.18-r2::gentoo] USE="keyring policykit" PYTHON_SINGLE_TARGET="python3_13 -python3_11 -python3_12 -python3_14" 0 KiB
[ebuild  r  U  ] media-libs/libheif-1.20.2:0/1.20::gentoo [1.19.8:0/1.19::gentoo] USE="aom de265%* gdk-pixbuf gui%* jpeg%* jpeg2k%* kvazaar%* rav1e threads webp x265 -dav1d% -doc -ffmpeg% -openh264 -svt-av1 -test -test-full% -tools% (-examples%)" ABI_X86="(64) -32 (-x32)" 1746 KiB
[ebuild  rR    ] media-libs/gd-2.3.3-r4:2/3::gentoo  USE="avif fontconfig heif jpeg png tiff truetype webp xpm zlib -static-libs -test" ABI_X86="(64) -32 (-x32)" CPU_FLAGS_X86="sse" 0 KiB
[ebuild     U  ] dev-lang/php-8.3.29:8.3::gentoo [8.3.26:8.3::gentoo] USE="acl avif bcmath berkdb bzip2 calendar cdb cgi cli ctype curl exif ffi fileinfo filter flatfile fpm ftp gd gdbm gmp iconv imap inifile intl iodbc ipv6 jit jpeg lmdb mhash mysql mysqli nls odbc opcache opcache-jit pcntl pdo phar png posix readline session sharedmem simplexml snmp soap sockets sodium spell sqlite ssl sysvipc threads tidy tokenizer tokyocabinet truetype unicode webp xml xmlreader xmlwriter xpm xslt zip zlib -apache2 -apparmor -argon2 -capstone -debug -embed -enchant -kerberos -ldap -ldap-sasl -libedit -mssql -phpdbg -postgres -qdbm (-selinux) -session-mm -systemd -test -valgrind" POSTGRES_TARGETS="postgres17 -postgres15 -postgres16 (-postgres18)" 12307 KiB
[ebuild  rR    ] media-gfx/imagemagick-7.1.2.3-r1:0/7.1.2-18::gentoo  USE="X bzip2 corefonts cxx djvu fftw fontconfig fpx graphviz hdri heif jbig jpeg jpeg2k jpegxl lcms lqr lzma opencl openexr pango perl png postscript q8 q32 raw svg tiff truetype webp wmf xml zip zlib -hardened -openmp -static-libs -test" PERL_FEATURES="(-debug) -ithreads -quadmath" 0 KiB
[ebuild     U  ] gnome-base/gvfs-1.56.1-r3::gentoo [1.56.1-r2::gentoo] USE="cdda cdr elogind gnome-online-accounts http keyring policykit udev udisks -afp -archive -bluray -fuse -google -gphoto2 -ios -mtp -nfs -onedrive -samba -systemd -test -zeroconf" 0 KiB

Total: 33 packages (17 upgrades, 2 new, 12 in new slots, 2 reinstalls), Size of downloads: 525131 KiB

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

dev-qt/qtsvg:6

  (dev-qt/qtsvg-6.10.1:6/6.10.1::gentoo, ebuild scheduled for merge) USE="-custom-cflags -test" ABI_X86="(64)" conflicts with
    ~dev-qt/qtsvg-6.9.3:6 required by (dev-qt/qtwayland-6.9.3:6/6.9.3::gentoo, installed) USE="gnome qml vulkan -accessibility -compositor -custom-cflags -test" ABI_X86="(64)"
    ^             ^^^^^  
    ~dev-qt/qtsvg-6.9.3:6 required by (dev-qt/qtdeclarative-6.9.3-r1:6/6.9.3::gentoo, installed) USE="jit network opengl sql ssl svg vulkan widgets -accessibility -custom-cflags -qmlls" ABI_X86="(64)"
    ^             ^^^^^  


!!! The following update(s) have been skipped due to unsatisfied dependencies
!!! triggered by backtracking:

dev-qt/qtdeclarative:6
dev-qt/qttools:6
dev-qt/qttranslations:6
dev-qt/qtbase:6
dev-qt/qtmultimedia:6
dev-qt/qt5compat:6

The following packages are causing rebuilds:

  (media-libs/libheif-1.20.2:0/1.20::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (media-libs/gd-2.3.3-r4:2/3::gentoo, ebuild scheduled for merge)
    (media-gfx/imagemagick-7.1.2.3-r1:0/7.1.2-18::gentoo, ebuild scheduled for merge)

COLLECT_GCC_OPTIONS='-march=native' '-mtune=native' '-E' '-v'
 /usr/libexec/gcc/x86_64-pc-linux-gnu/15/cc1 -E -quiet -v - -march=skylake -mmmx -mpopcnt -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx -mavx2 -mno-sse4a -mno-fma4 -mno-xop -mfma -mno-avx512f -mbmi -mbmi2 -maes -mpclmul -mno-avx512vl -mno-avx512bw -mno-avx512dq -mno-avx512cd -mno-avx512vbmi -mno-avx512ifma -mno-avx512vpopcntdq -mno-avx512vbmi2 -mno-gfni -mno-vpclmulqdq -mno-avx512vnni -mno-avx512bitalg -mno-avx512bf16 -mno-avx512vp2intersect -mno-3dnow -madx -mabm -mno-cldemote -mclflushopt -mno-clwb -mno-clzero -mcx16 -mno-enqcmd -mf16c -mfsgsbase -mfxsr -mno-hle -msahf -mno-lwp -mlzcnt -mmovbe -mno-movdir64b -mno-movdiri -mno-mwaitx -mno-pconfig -mno-pku -mprfchw -mno-ptwrite -mno-rdpid -mrdrnd -mrdseed -mno-rtm -mno-serialize -mno-sgx -mno-sha -mno-shstk -mno-tbm -mno-tsxldtrk -mno-vaes -mno-waitpkg -mno-wbnoinvd -mxsave -mno-xsavec -mno-xsaveopt -mno-xsaves -mno-amx-tile -mno-amx-int8 -mno-amx-bf16 -mno-uintr -mno-hreset -mno-kl -mno-widekl -mno-avxvnni -mno-avx512fp16 -mno-avxifma -mno-avxvnniint8 -mno-avxneconvert -mno-cmpccxadd -mno-amx-fp16 -mno-prefetchi -mno-raoint -mno-amx-complex -mno-avxvnniint16 -mno-sm3 -mno-sha512 -mno-sm4 -mno-apxf -mno-usermsr -mno-avx10.2 -mno-amx-avx512 -mno-amx-tf32 -mno-amx-transpose -mno-amx-fp8 -mno-movrs -mno-amx-movrs --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -mtune=skylake -fcf-protection -foffload-options=-fcf-protection=none -dumpbase -

model name	: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch pti fsgsbase bmi1 avx2 bmi2 invpcid rdseed adx clflushopt arat md_clear flush_l1d arch_capabilities