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-rw-r--r--guix/http-client.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/http-client.scm b/guix/http-client.scm
index 25693824ed..97a1e26d3e 100644
--- a/guix/http-client.scm
+++ b/guix/http-client.scm
@@ -243,7 +243,7 @@ Raise an '&http-get-error' condition if downloading fails."
(base64-encode
(string->utf8 str))))))
(_ '()))))
- (unless buffered?
+ (unless (or buffered? (not (file-port? port)))
(setvbuf port _IONBF))
(let*-values (((resp data)
;; Try hard to use the API du jour to get an input port.