The package was only tested on VL Standard
I have seen that unsatisfied dependency with other packages, though. Looks like Std has xterm-232-i486-1 installed. I see xterm-241-i486-1slack12.1 in repo, and it lists libxcb >= 1.1-i586-1vl60 as a dep, whereas only 1.0-i486-2 is available.
If you boot to TUI, use vxwmset to choose icewm, will startx bring it up then?