When I prepare a new "shrunk trunk", I run this guy: https://github.com/squeak-smalltalk/squeak-ci/blob/master/shrink-trunk.st. You'll see it just unloads packages and implicitly trusts that those packages know how to correctly unload themselves.
What do you think about having shrink-trunk.st simply be:
Smalltalk unloadAllKnownPackagesso we can then we can maintain it from the image..?
That method does a lot of stuff which is somewhat redundant. It's too long anyway so I'll factor it so we can access just what we want in your shrink-trunk.st script.
BTW, in ReleaseBuilder we call an agressive Smalltalk cleanUp: (true) vs. with #unloadAllKnownPackages and also your shrink we just call Smalltalk cleanUp: (false).
I've looked at the methods and seen the differences between aggressive and not but... I was wondering does anyone know whether there is an over-arching conceptual difference between the two? e.g., under what circumstances would a particular clean-up be considered aggressive vs. not?