Re: [asdf-devel] Feature-conditional components

On 22 October 2010 16:23, Robert Goldman rpgoldman@sift.info wrote:

Do we need to support /disjunction/ as well?  E.g.,

:depends-on ((OR (FEATURE :SBCL :SB-THREAD)                 (FEATURE :ALLEGRO :SOME-ALLEGRO-THREADING-THING)))

or even implication?  Let's assume, for example, that allegro has threading always, but SBCL not so:

I think arbitrary feature expressions composed of :OR, :AND, and :NOT -- "just like in the reader" are what I'm after.

My initial example should have used ((FEATURE (:AND :SBCL :SB-THREAD))), I guess.

since this is really a pretty substantial change to the API, and programmers need to be able to detect whether the ASDF is able to handle it.

No big opinions on this.

Cheers,

-- Nikodemus