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-rw-r--r--guix/build/download.scm7
1 files changed, 7 insertions, 0 deletions
diff --git a/guix/build/download.scm b/guix/build/download.scm
index 90de269f9b..4490d225e6 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -306,6 +306,13 @@ host name without trailing dot."
;; never be closed. So we use `fileno', but keep a weak reference to
;; PORT, so the file descriptor gets closed when RECORD is GC'd.
(register-tls-record-port record port)
+
+ ;; Write HTTP requests line by line rather than byte by byte:
+ ;; <https://bugs.gnu.org/22966>. This is not possible on Guile 2.0.
+ (cond-expand
+ (guile-2.0 #f)
+ (else (setvbuf record 'line)))
+
record)))
(define (ensure-uri uri-or-string) ;XXX: copied from (web http)