case $THIS_SUB_DEPENDS in
  PYTHON) echo "python bindings requested, forcing them." &&
          depends python '--with-python' &&
          depends gtk+2 '--with-gtk=2.0'
          ;;
    GTK2) echo "gtk+2 bindings requested, forcing them." &&
          GTK_VNC_VER=2
          depends gtk+2 '--with-gtk=2.0'
          ;;
    GTK3) echo "gtk+3 bindings requested, forcing them." &&
          GTK_VNC_VER=3
          depends gtk+3 '--with-gtk=3.0'
          ;;
       *) echo "unknown sub-depends!"
          return 1
          ;;
esac
