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-rw-r--r--guix/profiles.scm8
1 files changed, 4 insertions, 4 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 9dc9ab43b9..aa88b849e1 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -321,10 +321,10 @@ replacement if PORT is not Unicode-capable."
(let ((arrow "→"))
(catch 'encoding-error
(lambda ()
- (with-fluids ((%default-port-conversion-strategy 'error))
- (with-output-to-string
- (lambda ()
- (display arrow)))))
+ (call-with-output-string
+ (lambda (port)
+ (set-port-conversion-strategy! port 'error)
+ (display arrow port))))
(lambda (key . args)
"->")))))