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-rw-r--r--guix/hg-download.scm3
1 files changed, 3 insertions, 0 deletions
diff --git a/guix/hg-download.scm b/guix/hg-download.scm
index 946da8756b..382c34922a 100644
--- a/guix/hg-download.scm
+++ b/guix/hg-download.scm
@@ -104,6 +104,9 @@ HASH-ALGO (a symbol). Use NAME as the file name, or a generic name if #f."
(((names dirs outputs ...) ...)
dirs)))
+ (setvbuf (current-output-port) 'line)
+ (setvbuf (current-error-port) 'line)
+
(or (hg-fetch '#$(hg-reference-url ref)
'#$(hg-reference-changeset ref)
#$output