berkdb?
      ( >=sys-libs/db-4.8.30:4.8=[cxx] )

dev-libs/boost
dev-libs/libevent

gui?
      ( >=dev-qt/qtcore-5.15.14:5 >=dev-qt/qtgui-5.15.14:5 >=dev-qt/qtnetwork-5.15.14:5 >=dev-qt/qtwidgets-5.15.14:5 dbus?
            ( >=dev-qt/qtdbus-5.15.14:5 )
       )

qrcode?
      ( >=media-gfx/qrencode-4.1.1:= )

sqlite?
      ( >=dev-db/sqlite-3.38.5:= )

upnp?
      ( >=net-libs/miniupnpc-2.2.7:= )

zeromq?
      ( >=net-libs/zeromq-4.3.4:= )