[asdf-devel] help needed with asdf internals knowledge

[Faré]

On Thu, Feb 21, 2013 at 10:04 AM, Attila Lendvai
<attila.lendvai at gmail.com> wrote:
> dear asdf devels,
>
> i want to conditionally compile and load some lisp files on-demand at
> runtime, and i would like to use the asdf machinery for that. the set
> of files are not known at development time.
>
> the code in question is load-resource-file here:
>
> http://common-lisp.net/cgi-bin/darcsweb.cgi?r=cl-l10n-cl-l10n;a=headblob;f=/src/load-locale.lisp
>
> the current implementation is broken on asdf3 due to the assert (and a
> kludge in general):
>
> (defun load-resource-file (resource-file)
>   (bind ((output-files (asdf:output-files (make-instance 'asdf::compile-op)
>                                           (make-instance
> 'asdf:cl-source-file :pathname resource-file :parent (asdf:find-system
> :cl-l10n)))))
>     (assert (length= 1 output-files))
>     (bind ((output-file (first output-files)))
>       (ensure-directories-exist output-file)
>       (when (or (not (cl-fad:file-exists-p output-file))
>                 (> (file-write-date resource-file)
>                    (file-write-date output-file)))
>         (compile-file resource-file :output-file output-file))
>       (load output-file))))
>
> any help, pointers, thoughts are welcome!
>
I had code that looked just like that in cl-launch, now also copied to
exscribe (see compile-and-load-file in exscribe.lisp). I suppose I
should make it part of asdf/lisp-build even though asdf/defsystem
itself won't use it. Is it OK for you to depend on a recent
asdf-driver?

—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
Any sufficiently advanced bug is indistinguishable from a feature.
                — Rich Kulawiec