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| author | Ludovic Courtès <ludo@gnu.org> | 2017-11-06 23:21:08 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2017-11-07 00:12:10 +0100 |
| commit | 96dc8f3527a6ac0c84b51f7a0cac1d8052cf0e72 (patch) | |
| tree | 2bbd73d09e9e552d12ec5d66566fc53670022eac | |
| parent | c9405c461b1b37740bc0bb33c7043313978c0014 (diff) | |
| download | guix-96dc8f3527a6ac0c84b51f7a0cac1d8052cf0e72.tar guix-96dc8f3527a6ac0c84b51f7a0cac1d8052cf0e72.tar.gz | |
packages: 'fold-packages' takes #:select? parameter.
* gnu/packages.scm (fold-packages): Add #:select? parameter and honor it.
| -rw-r--r-- | gnu/packages.scm | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm index b4ac6661ca..97e6cb347f 100644 --- a/gnu/packages.scm +++ b/gnu/packages.scm @@ -142,13 +142,13 @@ for system '~a'") (define* (fold-packages proc init #: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 -MODULES, using INIT as the initial value of RESULT. It is guaranteed to never -traverse the same package twice." +MODULES that matches SELECT?, using INIT as the initial value of RESULT. It +is guaranteed to never traverse the same package twice." (fold-module-public-variables (lambda (object result) - (if (and (package? object) - (not (hidden-package? object))) + (if (and (package? object) (select? object)) (proc object result) result)) init |