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-rw-r--r--guix/profiles.scm4
1 files changed, 2 insertions, 2 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 5ef84e8a0b..011bc54d23 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -1268,8 +1268,8 @@ are cross-built for TARGET."
                          (guix search-paths)
                          (srfi srfi-1))
 
-            (setvbuf (current-output-port) _IOLBF)
-            (setvbuf (current-error-port) _IOLBF)
+            (setvbuf (current-output-port) 'line)
+            (setvbuf (current-error-port) 'line)
 
             #+(if locales? set-utf8-locale #t)