>>> Emerging : portage://dev-cpp/waylandpp-1.0.0-r2:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://media-libs/mesa-26.2.4 (wayland)

 └─step  2─┤ download  portage://dev-cpp/waylandpp-1.0.0-r2
             │           └─ file ─┤ 198.74 Kb  	 waylandpp-1.0.0.tar.gz
             │ download  portage://dev-lang/python-3.15.0
             │           └─ file ─┤ 34.04 Mb  	 Python-3.15.0.tar.xz
             │                    │ 4.52 Kb  	 python-gentoo-patches-3.15.0.tar.xz
             │ download  portage://dev-libs/pugixml-1.16
             │           └─ file ─┤ 574.78 Kb  	 pugixml-1.16.tar.gz
             │ download  portage://dev-libs/wayland-1.26.0
             │           └─ file ─┤ 598.03 Kb  	 wayland-1.26.0.tar.xz
             │ download  portage://dev-libs/wayland-protocols-1.49
             │           └─ file ─┤ 147.08 Kb  	 wayland-protocols-1.49.tar.xz
             │ download  portage://dev-util/wayland-scanner-1.26.0
             │           └─ file ─┤ 598.03 Kb  	 wayland-1.26.0.tar.xz
             │ download  portage://media-libs/mesa-26.2.4
             │           └─ file ─┤ 65.44 Mb  	 mesa-26.2.4.tar.xz
             │ download  portage://x11-libs/libdrm-2.4.134
             │           └─ file ─┤ 427.00 Kb  	 libdrm-2.4.134.tar.xz

 └─step  3─┤ install   portage://dev-libs/pugixml-1.16
             │           └─ conf ─┤ USE = "-test"
             │ install   portage://dev-lang/python-3.15.0
             │           └─ conf ─┤ USE = "gdbm* ncurses pgo* readline sqlite* ssl ensurepip (-jit) -bluetooth -build% -debug -examples -libedit
             │                    │          -tail-call-interp -test -tk -valgrind -verify-sig"
             │                    │ LLVM_SLOT = "21%*"
             │                    │ SLOT = "3.15"

 └─step  4─┤ install   portage://dev-util/wayland-scanner-1.26.0
             │ update    portage://x11-libs/libdrm-2.4.134 (replaces pkg://x11-libs/libdrm-2.4.131)
             │           └─ conf ─┤ USE = "-doc -test -tools -udev -valgrind"
             │                    │ VIDEO_CARDS = "vmware -amdgpu -intel -nouveau -radeon"
             │ run       portage://dev-libs/pugixml-1.16

 └─step  5─┤ install   portage://dev-libs/wayland-1.26.0
             │           └─ conf ─┤ USE = "-doc -test"
             │ install   portage://dev-libs/wayland-protocols-1.49
             │           └─ conf ─┤ USE = "-test"

 └─step  6─┤ run       portage://dev-libs/wayland-1.26.0

 └─step  7─┤ update    portage://media-libs/mesa-26.2.4 (USE modified)
             │           └─ conf ─┤ USE = "X* (opengl) proprietary-codecs zstd -llvm* -debug -lm-sensors -opencl -sysprof% -test -unwind -vaapi -valgrind
             │                    │          -vulkan wayland"
             │                    │ CPU_FLAGS_X86 = "sse2*"
             │                    │ LLVM_SLOT = "22%* -18 -19 -20* -21%"
             │                    │ VIDEO_CARDS = "vmware -asahi -d3d12 -i915% -intel -lavapipe -nouveau -nvk -r300 -r600 -radeon -radeonsi -virgl -zink"

 └─step  8─┤ install   portage://dev-cpp/waylandpp-1.0.0-r2
             │           └─ conf ─┤ USE = "-doc"
             │                    │ SLOT = "0/1.0"

 └─step  9─┤ run     portage://dev-cpp/waylandpp-1.0.0-r2

Total: 20 actions (1 useflag, 8 downloads, 6 installs, 2 updates, 3 runs), grouped into 9 steps.
       101.96 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    media-libs/mesa wayland