JWM menus aren't autogenerating on slitaz, so that means either maint work or coming up with a generating scheme working in that environment.
The antix"menu (re)builder" script should be portable. You should be use it in slitaz.
Under slitaz, the script will not _automatically_ regenerate your menu each time you install/remove programs, but you can run the script manually, as needed.
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"https://github.com/antiX-Linux/desktop-menu/blob/master/usr/local/bin/desktop-menu"
linktext was:"https://github.com/antiX-Linux/desktop- ... sktop-menu"
====================================
that 30 mb difference is real tempting to go after...
Have you pursued the bulleted items discussed in the recent thread?
(autostart fewer consoles, different/lighter shell, uvxrt as terminal app...)
I'm guessing you might be able to shave 17-21Mb overhead, but not 30Mb.