The thunar-shares-plugin in the repository is for xfce-4.4, the default xfce desktop in VL STD:
aaa_base >= 12.1.0-noarch-2 | glibc-solibs >= 2.7-i486-10,atk >= 1.22.0-i486-1,cairo >= 1.6.4-i586-1vl60,dbus >= 1.1.20-i486-1,dbus-glib >= 0.74-i486-2,expat >= 2.0.1-i486-1,fontconfig >= 2.4.2-i486-2,freetype >= 2.3.8-i586-1vl60,gamin >= 0.1.9-i486-1,glib2 >= 2.16.3-i586-1gsb,gtk+2 >= 2.12.9-i486-1,hal >= 0.5.10-i486-2,libICE >= 1.0.4-i486-1,libSM >= 1.0.3-i486-1,libX11 >= 1.1.4-i486-1,libXau >= 1.0.3-i486-1,libXcomposite >= 0.4.0-i486-1,libXcursor >= 1.1.9-i486-1,libXdamage >= 1.1.1-i486-1,libXdmcp >= 1.0.2-i486-1,libXext >= 1.0.4-i486-1,libXfixes >= 4.0.3-i486-1,libXi >= 1.1.3-i486-1,libXinerama >= 1.0.3-i486-1,libXrandr >= 1.2.2-i486-1,libXrender >= 0.9.4-i486-1,libjpeg >= 6b-i486-5,libpng >= 1.2.29-i586-1vl60,libusb >= 0.1.12-i486-2,libxcb >= 1.0-i486-2,pango >= 1.20.0-i486-1,pixman >= 0.10.0-i486-4,startup-notification >= 0.9-i486-1,xfce4 >= 4.4.3-i586-6vl60,zlib >= 1.2.3-i486-2
Maybe you are running VL Light? That would require a lot of new packages.