This package has a dependency on gsb-desktop:
root:# slapt-get --install seamonkey
Reading Package Lists... Done
Excluding seamonkey, use --ignore-dep to override
The following packages have unmet dependencies:
seamonkey: Depends: gsb-desktop >= 2.22.1-noarch-6vl60
The following packages have been EXCLUDED:
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Somehow I don't think Seamonkey requires GNOME.
That's peculiar. I compiled it in a clean, new VL 60-STD-AO33 chroot, with only required/veclinux.tlz, required/vlconfig.tlz, required/vlconfig2.tlz, optional/X11.tlz and optional/dev.tlz. I'm not sure why gsb-desktop-2.22.1-noarch-6vl60 is included in those basic packages, but it is:
ls VL-60-STD-AO33_chroot/var/log/packages | grep gsb-desktop