Not sure I understand what you mean. Note that SM uses categories right,
and SM loader simply checks whether the current squeak version matches
one of those categories for each package. 

Daniel

"Withers, Robert" <rwithers at quallaby.com> wrote:
> 
> 
> > -----Original Message-----
> > From: Daniel Vainsencher [mailto:danielv at netvision.net.il]
> 
> > So what we need is this - a patch to SMLoader such that it accepts all
> > packages for it's own version, and, if it's own version ends with
> > 'alpha', also all package for the previous version. Where previous
> > version should correctly handle nonobvious cases like 4.0. 
> > One approach
> > is to store a list of "X's previous version was - Y". Another angle
> > might be a patch to Squeak that remembers what it's previous version
> > was, though I'm not sure that should be in the base image.
> 
> Why couldn't we just present the latest version of any package as being
> suitable for loading in any later version image?  If a package becomes
> outdated, we could 'close' its version stream.
> 
> rob