From e2257d4eeb3f75bac57d9cb77c9ce06b702de050 Mon Sep 17 00:00:00 2001
From: Renzo Carbonara <gnuk0001@gmail.com>
Date: Thu, 9 Feb 2017 18:16:09 +0100
Subject: [PATCH] Documentation.

---
 src/libstore/download.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libstore/download.cc b/src/libstore/download.cc
index 8f2387b63..b2adc1548 100644
--- a/src/libstore/download.cc
+++ b/src/libstore/download.cc
@@ -230,8 +230,11 @@ struct CurlDownloader : public Downloader
                 curl_easy_setopt(req, CURLOPT_SSL_VERIFYHOST, 0);
             }
 
+            /* If no file exist in the specified path, curl continues to work
+             * anyway as if netrc support was disabled. */
             Path netrcFile = settings.get("netrc-file",
                (format("%1%/%2%") % settings.nixConfDir % "netrc").str());
+            /* Curl copies the given C string, so the following call is safe. */
             curl_easy_setopt(req, CURLOPT_NETRC_FILE, netrcFile.c_str());
             curl_easy_setopt(req, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);