<<< metadata_duplicate_useflag_description >>>
  gui-libs/gtk4-layer-shell|examples:introspection:vala|sin-ack@protonmail.com:proxy-maint@gentoo.org
<<< open bugs >>>
  https://bugs.gentoo.org/960533 [guru]_gui-libs/gtk4-layer-shell_fails_to_build_with_&quot;vala&quot;_USE_flag
  https://bugs.gentoo.org/937129 [guru]_gui-libs/gtk4-layer-shell-1.0.2_fails_tests
  https://bugs.gentoo.org/945225 [guru]_gui-libs/gtk4-layer-shell-1.0.4_misses_package(s)_in_RDEPEND