The following Gentoo ebuilds exist
dev-lang/squeak dev-lang/squeak-basicimage dev-lang/squeak-fullimage
Unfortunately, they are for 3.6 and do not seem to be maintained.
I have updated these to the latested 3.7.7 VM and the final 3.8 images from uiuc. The currently exist in my portage overllat only.
Does anyone else
a) care b) know how to get these updated in Gentoo.