[asdf-devel] cl-growl and weakly-depends-on

Patrick Stein pat at nklein.com
Wed Feb 27 05:01:03 UTC 2013

Well, I didn't get to it over the weekend, but I got to play a bit tonight.  I just made it explicitly depend on ironclad.  So, once it gets updated in quicklisp, there should be no more :weakly-depends-on in my ASD file.

When I used the 'weakly-depends' before, it was before quicklisp when I was leery of having too many external dependencies.


On Feb 21, 2013, at 11:47 AM, Patrick Stein wrote:

> Yes.  I can stop using it.  I will try to tackle that this weekend.
> -- Patrick <pat at nklein.com>
> On Feb 21, 2013, at 9:55 AM, Faré <fahree at gmail.com> wrote:
>> Dear Pat,
>> I'd like to kill the evil that is :weakly-depends-on, and your
>> cl-growl seems to be the only user of it in quicklisp.
>> :weakly-depends-on is evil because it's non-deterministic, and what
>> code you get depends on which order things were compiled or
>> configured, and you can't fix things after the fact. Could you stop
>> using it?
>> Alternatives include having a separate system foo+bar that explicitly
>> loads foo and bar before doing the connection, and/or using
>> asdf-system-connections to automatically load foo+bar when both foo
>> and bar have been loaded. I don't personally like this automatic
>> loading, but at least it doesn't break determinism.
>> As for allowing a system to run with or without another, that's what
>> hooks are call, i.e. runtime configuration variables.
>> —♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
>> So that there be reality, there must be an observer.
>> "I am, therefore someone thinks."       — Faré

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