[asdf-devel] Re: Mistake (?) in grammar of defsystem
fare at tunes.org
Sat Feb 22 22:59:21 UTC 2014
On Sat, Feb 22, 2014 at 5:53 PM, Robert P. Goldman <rpgoldman at sift.net> wrote:
> Thanks, Faré. Quick follow up: is there any construct that has semantics
> like "If this feature is not in features, fail"?
That's what the (feature <feature-expression>)
component-depends-on/in-order-to feature does.
Do you think it's useful?
On the other hand, I realize that, though it's never worked and is
probably never used,
the (:feature <feature-expression> <dependency-spec>) feature is
for conditional dependencies of a system, as in this example from test-asdf.asd:
((:feature :sbcl (:require :sb-posix))
(:feature :allegro (:require "osi")))
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
How can you find a person who loves you the way you are,
if you constantly lie about who you are?
More information about the asdf-devel