root@x260 ~# emerge -pv --nodeps mesa

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

[ebuild     U  ] media-libs/mesa-17.2.0_rc4::gentoo [17.0.5::gentoo] USE="classic dri3 egl gallium gbm llvm nptl wayland -bindist -d3d9 -debug -gles1 -gles2 -opencl -openmax -osmesa -pax_kernel -pic (-selinux) -unwind% -vaapi -valgrind -vdpau -vulkan -xa -xvmc" ABI_X86="32 (64) (-x32)" VIDEO_CARDS="intel (-freedreno) -i915 -i965 -imx -nouveau -r100 -r200 -r300 -r600 -radeon -radeonsi (-vc4) (-vivante) -vmware" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB
root@x260 ~#