The x11-libs/libxkbcommon-1.3.1 ebuild fails to build on my system if the "wayland" USE flag is enabled.
Steps to Reproduce:
emerge -1 x11-libs/libxkbcommon
../libxkbcommon-1.3.1/meson.build:484:12: ERROR: Problem encountered: The Wayland xkbcli programs require wayland-client >= 1.2.0, wayland-protocols >= 1.7 which were not found.
You can disable the Wayland xkbcli programs with -Denable-wayland=false.
Disabling the "wayland" USE flag for the specific package seems to solve the issue.
Created attachment 750924 [details]
Created attachment 750927 [details]
emerge --info (amd64)
My guess is that your dev-libs/wayland doesn't have USE=abi_x86_32, because of:
wayland? ( >=dev-libs/wayland-1.2.0 )
You are totally right: removing the "abi_x86_32" USE flag from x11-libs/libxkbcommon solved the issue. I guess that the ebuild misses multilib support.