OK, then I believe that defining the method for `OPERATE` will give you what you want. You can put that definition in `my-system.asd` below the `defsystem` for "my-system". There's only one problem with that -- if you `load-system` on "my-system" before `my-system.asd` has been loaded (e.g., by `find-system`), then you will lose, because the around method will not have been defined before the first call to `operate`.

On 9 Mar 2018, at 16:37, Mark H. David wrote:

No, it's what we want for our system. We want everyone who builds our
system to get this behavior reliably.

----- Original message -----
From: Robert Goldman <rpgold...@sift.info>
To: "Mark H. David" <m...@yv.org>
Cc: "ASDF-devel" <asdf-devel@common-lisp.net>
Subject: Re: Best Practice for an ASDF Variable Like **compile-file-failure-behaviour**Date: Fri, 09 Mar 2018 16:34:48 -0600

Are you just using this for yourself?  If so, a simple

(let ((asdf:*compile-file-failure-behaviour* :warn)) (asdf:load-system
"my system"))will suffice.

Alternatively, you could put something like this in the .asd file:

(defmethod operate :around ((operation load-op) (system (asdf:find-
system "my-system"))) (let ((asdf:*compile-file-failure-behaviour*
:warn)) (call-next-method)))The above most emphatically *has not been tested*, so it might be wrong.I *think* if the top-level operation you use is load-op, this should work. Alternatively, you might want to replace (operation load-op) with just (operation operation) (and add a (declare (ignorable operation)))Cheers,

On 9 Mar 2018, at 16:12, Mark H. David wrote:

As has been discussed here over the years, asdf:*compile-file-failure- behaviour* is :warn on most platforms, but it is notoriously :error on #+sbcl. So what would you do if you wanted to change asdf:*compile-file-failure-
behaviour* to be :warn on #+SBCL? How would you recommend to change
it. Where?>
 I don't want to really have to impose an init file on everyone.
 Also, I don't really want to necessarily make this global across
 every use of ASDF, but let's say I just want it to apply to one main
 system and all subsystems loaded as part of this.>
 I cannot think of anything better than a top-level setq in the .asd
 file of the system, something like this?>
 (setq asdf:*compile-file-failure-behaviour* :warn)

 What else can one do that's any better?

 Maybe there's a less crude way, like something like an around method
 that wraps around the compile/load.  I'm really just barely a novice
user, so I'm sorry this if this is such a naive question. If there's a simple example one could provide or point me to that does this, I'd
 appreciate it.>


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