How do I replace my broken ':perform' forms?

Sorry if this has been covered, or if it's just really obvious, but I  
couldn't find anything helpful in the archives.

I recently (i.e., about 15 minutes ago) got a new version of asdf.lisp  
when I updated my copy of ccl, and it broke a behavior I've been  
using. I *believe* that I was using the behavior incorrectly, and that  
the change was a bugfix, though I could be misunderstanding the svn  
logs.

In my defsystem, I have the following bit of code:

   :perform (load-op :before (op c)
		    ;; the before method runs after dependencies are loaded,
		    ;; but before the components are loaded, so clsql-mysql is  
available
		    (pushnew #p"/usr/local/mysql/lib/"      ; local development
			     (symbol-value (find-symbol "*FOREIGN-LIBRARY-SEARCH-PATHS*"
							:clsql-sys)))
		    (asdf:oos 'asdf:load-op 'clsql-mysql))

It appears, now, that my comment is not correct. The idea is that I  
want to load all the systems from :depends-on, which includes clsql.  
Then I want to set up clsql-sys:*foreign-library-search-paths* to  
include the correct version of the MySQL libraries. Finally, I want to  
load the mysql components of clsql.

Does anyone have advice on the Right Way (or even just a good way) to  
do this?

Thanks,
Thom


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