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I tried to strip an out-of-the-box Squeak 2.6 image (no patches yet) down
to the essential classes using the "Smalltalk discard*" methods.  I chose
to keep MVC and to discard morphic.  I also kept the VM generation stuff.
It did a job job saving about 3MB of image size.

However, there're still quite a few classes left which are obviously
unneeded once to got rid of 3d stuff and networking and so on.  So I tried
to remove them, too.

First, I noticed, that without morphic, you cannot fileout anything
anymore, because SystemDictionary>>version requires The EToySystem class.
So I had to modify that method and hardcode the version.  Then I removed
all classes which were IMHO unneded and had no references from other
methods.  These changes result in a less than 2 MB image.

Unfortunately, I've now 163 obsolete classes in my system and 293 methods,
which refer to these classes.  So stripping isn't that easy.

I think, I can safely remove support for flaps, scrabbook and some other
morphic specific things, but I'd recommend that somebody who's involved
more deeply in the system will check this. Actually, most problematic are
#isKindOf: sends which always hard code class references.

Still, that doesn't help very much and I think, I give up that attempt.  If
anybody is interested in continuing this, I've attached the changeset to
add more discard methods.

At the moment, it seems near to impossible to cleanly discard morphic.
Furthermore, as all menus and initialization methods are hard coded, these
are also sources for other obsolete class references.


bye
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--
Stefan Matthias Aust  //  Bevor wir fallen, fallen wir lieber auf.
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