08/08: download: Comment on lack of progress report with chunked encoding.

[Ludovic Courtès]

civodul pushed a commit to branch core-updates
in repository guix.

commit c9727aac405123ecf2ffb26745fa255a76c87e40
Author: Ludovic Courtès <address@hidden>
Date:   Fri Feb 27 15:04:05 2015 +0100

    download: Comment on lack of progress report with chunked encoding.
    
    * guix/build/download.scm (progress-proc): Add comment.
---
 guix/build/download.scm |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/guix/build/download.scm b/guix/build/download.scm
index 6c94fa0..a3105ad 100644
--- a/guix/build/download.scm
+++ b/guix/build/download.scm
@@ -64,6 +64,9 @@ representing it in a human-readable way."
   "Return a procedure to show the progress of FILE's download, which is
 SIZE byte long.  The returned procedure is suitable for use as an
 argument to `dump-port'.  The progress report is written to LOG-PORT."
+  ;; XXX: Because of <http://bugs.gnu.org/19939> this procedure is often not
+  ;; called as frequently as we'd like too; this is especially bad with Nginx
+  ;; on hydra.gnu.org, which returns whole nars as a single chunk.
   (let ((start-time #f))
     (let-syntax ((with-elapsed-time
                      (syntax-rules ()