Proposal about SqueakMap etc (was Re: [squeak-dev] Re: SqueakMap soon working in 4.0/4.1!)

Ralph Johnson johnson at cs.uiuc.edu
Thu Apr 8 14:55:57 UTC 2010


One of the "big ideas" of Package Universe is that a universe is only for
one version of the image.  In other words, there was a PU for 3.9 and one
for 3.11.  If you are going to use PU in 4.1 then you will have to set up a
universe for it.

The nice thing about thie idea is that within a universe, you can pretty
much expect all the packages to work together.  You con't have to search for
the right version to load.  You just say which packages you want, and the
system will load all the prerequisite packages, and get the right version of
each.

The downside, of course, is that people have to keep making new PUs for each
release.  PU is easier for the users than SM, but more work for developers.

-Ralph
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