How to add ql dependencies into an asd

[Jeff Shrager]

Okay, I'm sure that I'm going to get flamed for asking such a simple question, but can you tell me how to put ql dependencies in my asd. For example, here's my example asd:

(in-package :asdf)

(defsystem foo

  :components

  ((:file "package")

   (:module "sub1"

            :components

            ((:file "package")

             (:file "sub1" :depends-on ("package"))

             (:file "sub1sub" :depends-on ("package"))))

   (:module "sub2"

            :components

            ((:file "package")

             (:file "sub2" :depends-on ("package"))

             (:file "sub2sub" :depends-on ("package")))

            )

   (:file "foo" :depends-on ("package"))

   ))

Now, suppose that the whole thing depends on cl-json, or something. Where to I put that? In the asd? In an eval-when in foo.lisp? ... (Honestly, in 40 years of using lisp to write ... probably a million lines of code and huge systems, I've only NOW bothered to learn how to use ASDF. I've always just rolled my own compilation meta-machinery. ... go ahead and laugh! :-)

[Alexandre Rademaker]

For example:

https://github.com/own-pt/cl-conllu/blob/master/cl-conllu.asd

Note the use of :depends-on 

Alexandre 
Sent from my iPhone

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[Jeff Shrager]

Yow! So it magically knows that those are ql packages?! Seems to work (but seems magical!) I was trying all sorts of method pretzel logic. Thanks!

[Alexandre Rademaker]

This is precisely the most important benefit of Quicklisp, his ability to solve dependencies.

If a package you depend on is not yet in ql , but it is asdf installable, you can download it to the local-systems folder under ql directory to load it with ql or make other local packages depend on it too.

Alexandre
Sent from my iPhone

[je...@cancercommons.org]

Yes, well, hard to argue with success; Thanks!

[Anton Vodonosov]

And that's not magic.

 

1. When you do (ql:quickload :foo), quicklisp first consults its index and downloads all the foo's dependencies it knows about (if any), and then loads foo via asdf.

 

2. (what seemed magic to you) : if asdf signals missing-dependency, quicklisp downloads that system too and retries: https://github.com/quicklisp/quicklisp-client/blob/master/quicklisp/setup.lisp#L181

 

 

 

 

29.08.2017, 14:11, "Alexandre Rademaker" <arade...@gmail.com>:

--

[je...@cancercommons.org]

Yes, okay, small "m" magic - obviously there's an algorithm; I was just a bit taken-aback that it knew that these were ql packages when I hadn't even downloaded them. The thing I wasn't aware of was (among many other things) that QL and ASDF know about one another.

[Anton Vodonosov]

In one direction only - QL knows about ASDF; ASDF doesn't know about QL.

 

07.09.2017, 02:28, "je...@cancercommons.org" <je...@cancercommons.org>:

[Zach Beane]

But I think it's important to note that ASDF has key hooks, like asdf:*system-definition-search-functions*, that make it possible for Quicklisp to do what it does without too much extra work. Those hooks are extremely helpful.

Zach

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