emerge -auDN world && emerge --depclean && revdep-rebuild
!!! Repository 'stuff' has sync-uri attribute, but is missing sync-type attribute
!!! Section 'obs-studio' in repos.conf has name different from repository name 'obs-studio-overlay' set inside repository
WARNING: One or more repositories have missing repo_name entries:

        /var/lib/layman/pro-audio/profiles/repo_name

NOTE: Each repo_name entry should be a plain text file containing a
unique name for the repository on the first line.



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

Calculating dependencies... done!

!!! The ebuild selected to satisfy "media-libs/mesa[egl]" has unmet requirements.
- media-libs/mesa-18.2.2-r1::gentoo USE="classic dri3 egl gallium gbm gles2 llvm vdpau vulkan wayland xa -d3d9 -debug -gles1 -lm_sensors -opencl -osmesa -pax_kernel -pic (-selinux) -test -unwind -vaapi -valgrind -xvmc" ABI_X86="32 (64) (-x32)" VIDEO_CARDS="nouveau (-freedreno) -i915 -i965 (-imx) -intel -r100 -r200 -r300 -r600 -radeon -radeonsi (-vc4) -virgl (-vivante) -vmware"

  The following REQUIRED_USE flag constraints are unsatisfied:
    vulkan? ( any-of ( video_cards_i965 video_cards_radeonsi ) )

  The above constraints are a subset of the following complete expression:
    d3d9? ( dri3 ) gles1? ( egl ) gles2? ( egl ) vulkan? ( dri3 any-of ( video_cards_i965 video_cards_radeonsi ) video_cards_radeonsi? ( llvm ) ) wayland? ( egl gbm ) video_cards_freedreno? ( gallium ) video_cards_intel? ( classic ) video_cards_i915? ( any-of ( classic gallium ) ) video_cards_i965? ( classic ) video_cards_imx? ( gallium video_cards_vivante ) video_cards_nouveau? ( any-of ( classic gallium ) ) video_cards_radeon? ( any-of ( classic gallium ) gallium? ( x86? ( llvm ) amd64? ( llvm ) ) ) video_cards_r100? ( classic ) video_cards_r200? ( classic ) video_cards_r300? ( gallium x86? ( llvm ) amd64? ( llvm ) ) video_cards_r600? ( gallium ) video_cards_radeonsi? ( gallium llvm ) video_cards_vc4? ( gallium ) video_cards_virgl? ( gallium ) video_cards_vivante? ( gallium gbm ) video_cards_vmware? ( gallium )

(dependency required by "dev-qt/qtgui-5.11.1::gentoo[egl]" [installed])
(dependency required by "app-text/poppler-0.67.0::gentoo[qt5]" [installed])
(dependency required by "net-print/cups-filters-1.21.2::gentoo" [installed])
(dependency required by "net-print/cups-2.2.8-r1::gentoo" [installed])
(dependency required by "net-wireless/bluez-5.50::gentoo[cups]" [installed])
(dependency required by "dev-lang/python-3.5.5-r1::gentoo[bluetooth]" [installed])
(dependency required by "dev-libs/libxml2-2.9.8::gentoo[python,python_targets_python3_5]" [installed])
(dependency required by "app-arch/libarchive-3.3.3::gentoo[-expat]" [installed])
(dependency required by "dev-util/cmake-3.12.3::gentoo" [installed])
(dependency required by "media-libs/openjpeg-2.3.0::gentoo" [installed])