>
> A good tool is Metacello, that permit to configure versions and  
> dependencies
> in a smart way. If I not bad remember I think that Miguel Cobá  
> developed
> a MetacelloConfigurationOrMagma also.
>

The easiest way is to write an installer script that builds your image  
in 3.9 as you are used to.

Then run the script on the 3.11-alpha-whatever. Make your fixes, so  
that everything keeps working in both images.

Keith
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