Hi Tobias,

I'm forwarding this to the asdf-devel list and will answer it later today from there.

On May 18, 2009, at 8:28 AM, Tobias C. Rittweiler wrote:

I've read several times that it's a head ache to configure optional dependencies with ASDF.

How true is that? Could we perhaps provide another clause :OPTIONALLY-DEPEND-ON in DEFSYSTEM which would load a system only if available?

Reason is that I'm going to revive

http://common-lisp.net/project/hyperdoc/

which is a good example of a natural optional dependency. And I'd like to make its inclusion as easy as possible so it'll see widespread adoption.

Thanks!,

-T.

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