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packages: 'fold-packages' takes #:select? parameter. 

* gnu/packages.scm (fold-packages): Add #:select? parameter and honor it.
master
Ludovic Courtès 2017-11-06 23:21:08 +01:00
parent c9405c461b
commit 96dc8f3527
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1 changed files with 5 additions and 5 deletions
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gnu/packages.scm
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@ -142,13 +142,13 @@ for system '~a'")
(define* (fold-packages proc init (define* (fold-packages proc init
#:optional #:optional
(modules (all-modules (%package-module-path)))) (modules (all-modules (%package-module-path)))
#:key (select? (negate hidden-package?)))
"Call (PROC PACKAGE RESULT) for each available package defined in one of "Call (PROC PACKAGE RESULT) for each available package defined in one of
MODULES, using INIT as the initial value of RESULT. It is guaranteed to never MODULES that matches SELECT?, using INIT as the initial value of RESULT. It
traverse the same package twice." is guaranteed to never traverse the same package twice."
(fold-module-public-variables (lambda (object result) (fold-module-public-variables (lambda (object result)
(if (and (package? object) (if (and (package? object) (select? object))
(not (hidden-package? object)))
(proc object result) (proc object result)
result)) result))
init init