MissingUseDepDefault: version 3.1.0: DEPEND="dev-qt/qtwayland:6[compositor]": USE flag 'compositor' missing from packages: [ dev-qt/qtwayland-6.10.1, dev-qt/qtwayland-6.10.9999, dev-qt/qtwayland-6.9999 ]
  MissingUseDepDefault: version 3.1.0: RDEPEND="dev-qt/qtwayland:6[compositor]": USE flag 'compositor' missing from packages: [ dev-qt/qtwayland-6.10.1, dev-qt/qtwayland-6.10.9999, dev-qt/qtwayland-6.9999 ]