functions and *central-registry*

I just updated to asdf 1.68 and discovered putting a function in 
*central-registry* no longer works. I noticed that there is a new 
variable *system-definition-search-functions* which I adapted my 
functions to work with. But this symbol is not exported -- is that an 
oversight or is there no longer a supported way to use functions to 
generate the system definition path from the name?

With consistent naming conventions, I find that using a function or 
two is much easier to maintain than dealing with multiple directories 
or symlinks to .asd files. When using the same source base for 
multiple compilers and operating systems, you end up maintaining 
multiple symlink directories for each OS (currently I'm using 
Windows, Linux, Mac OS 9, and Mac OS X).

Thanks,

John DeSoi, Ph.D.


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