diff options
| -rw-r--r-- | guix/packages.scm | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/guix/packages.scm b/guix/packages.scm index cd7d3b895c..c762fa7c39 100644 --- a/guix/packages.scm +++ b/guix/packages.scm @@ -766,16 +766,15 @@ in INPUTS and their transitive propagated inputs." (mlambdaq (package) "Return the intersection of the systems supported by PACKAGE and those supported by its dependencies." - (set->list - (fold (lambda (input systems) - (match input - ((label (? package? p) . _) - (fold set-insert systems - (package-transitive-supported-systems p))) - (_ - systems))) - (list->set (package-supported-systems package)) - (bag-direct-inputs (package->bag package)))))) + (fold (lambda (input systems) + (match input + ((label (? package? p) . _) + (lset-intersection + string=? systems (package-transitive-supported-systems p))) + (_ + systems))) + (package-supported-systems package) + (bag-direct-inputs (package->bag package))))) (define* (supported-package? package #:optional (system (%current-system))) "Return true if PACKAGE is supported on SYSTEM--i.e., if PACKAGE and all its |