[ebuild  r  U ] dev-libs/libffi-3.4.2-r1 [3.3-r2] USE="-debug (-exec-static-trampoline) (-experimental-loong) -pax-kernel% -static-libs -test (-abi_riscv_lp64%) (-abi_riscv_lp64d%) (-pax_kernel%)" ABI_X86="(64) -32 (-x32)" 
[ebuild  rR   ] dev-lang/python-3.9.12  USE="gdbm hardened ncurses readline sqlite ssl tk xml -bluetooth -build -examples -lto -pgo -test -verify-sig -wininst" 
[ebuild  rR   ] dev-lang/python-3.10.4  USE="gdbm hardened ncurses readline sqlite ssl tk xml -bluetooth -build -examples -libedit -lto -pgo -test -verify-sig -wininst" 
[ebuild  rR   ] dev-libs/glib-2.72.1  USE="elf mime xattr -dbus -debug -fam -gtk-doc (-selinux) -static-libs -sysprof -systemtap -test -utils" ABI_X86="(64) -32 (-x32)" 
[ebuild  rR   ] dev-libs/gobject-introspection-1.72.0  USE="-doctool -gtk-doc -test" PYTHON_SINGLE_TARGET="python3_9 -python3_8 -python3_10" 
[ebuild  rR   ] sys-devel/llvm-14.0.4  USE="binutils-plugin libffi ncurses -debug -doc -exegesis -libedit -test -xar -xml -z3" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="(AArch64) (AMDGPU) (ARM) (AVR) (BPF) (Hexagon) (Lanai) (MSP430) (Mips) (NVPTX) (PowerPC) (RISCV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86) (XCore) (-ARC) (-CSKY) (-M68k)" 
[ebuild  rR   ] sys-devel/llvm-13.0.1  USE="binutils-plugin libffi ncurses -debug -doc -exegesis -libedit -test -xar -xml -z3" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="(AArch64) (AMDGPU) (ARM) (AVR) (BPF) (Hexagon) (Lanai) (MSP430) (Mips) (NVPTX) (PowerPC) (RISCV) (Sparc) (SystemZ) (WebAssembly) (X86) (XCore) (-ARC) (-CSKY) (-M68k) (-VE)" 
[ebuild  rR   ] www-client/firefox-91.10.0  USE="clang hardened openh264 system-av1 system-harfbuzz system-icu system-jpeg system-libevent system-libvpx system-png system-webp -dbus -debug -eme-free -geckodriver (-gmp-autoupdate) -hwaccel -jack -lto -pgo -pulseaudio -screencast (-selinux) -sndio -wayland -wifi" L10N="-ach -af -an -ar -ast -az -be -bg -bn -br -bs -ca -ca-valencia -cak -cs -cy -da -de -dsb -el -en-CA -en-GB -eo -es-AR -es-CL -es-ES -es-MX -et -eu -fa -ff -fi -fr -fy -ga -gd -gl -gn -gu -he -hi -hr -hsb -hu -hy -ia -id -is -it -ja -ka -kab -kk -km -kn -ko -lij -lt -lv -mk -mr -ms -my -nb -ne -nl -nn -oc -pa -pl -pt-BR -pt-PT -rm -ro -ru -sco -si -sk -sl -son -sq -sr -sv -szl -ta -te -th -tl -tr -trs -uk -ur -uz -vi -xh -zh-CN -zh-TW" 

The following packages are causing rebuilds:

  (dev-libs/libffi-3.4.2-r1:0/8::gentoo, ebuild scheduled for merge) causes rebuilds for:
    (www-client/firefox-91.10.0:esr/esr::gentoo, ebuild scheduled for merge)
    (sys-devel/llvm-13.0.1:13/13::gentoo, ebuild scheduled for merge)
    (sys-devel/llvm-14.0.4:14/14::gentoo, ebuild scheduled for merge)
    (dev-libs/gobject-introspection-1.72.0:0/0::gentoo, ebuild scheduled for merge)
    (dev-libs/glib-2.72.1:2/2::gentoo, ebuild scheduled for merge)
    (dev-lang/python-3.10.4:3.10/3.10::gentoo, ebuild scheduled for merge)
    (dev-lang/python-3.9.12:3.9/3.9::gentoo, ebuild scheduled for merge)