From e8c43abd9aed4d88f2cce9ebc97de73930dffdfb Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Tue, 24 Jan 2017 20:13:19 +0100
Subject: [PATCH] On HTTP errors, also show the curl error

This is a hopefully temporary measure to diagnose the intermittent
"HTTP error 200" failures.
---
 src/libstore/download.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstore/download.cc b/src/libstore/download.cc
index 8030e83b0..074e0ca66 100644
--- a/src/libstore/download.cc
+++ b/src/libstore/download.cc
@@ -276,7 +276,7 @@ struct CurlDownloader : public Downloader
                     code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted
                     ? DownloadError(Interrupted, format("download of ‘%s’ was interrupted") % request.uri)
                     : httpStatus != 0
-                      ? DownloadError(err, format("unable to download ‘%s’: HTTP error %d") % request.uri % httpStatus)
+                      ? DownloadError(err, format("unable to download ‘%s’: HTTP error %d (curl error: %s)") % request.uri % httpStatus % curl_easy_strerror(code))
                       : DownloadError(err, format("unable to download ‘%s’: %s (%d)") % request.uri % curl_easy_strerror(code) % code);
 
                 /* If this is a transient error, then maybe retry the
-- 
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