From 4596251dd194cb34c83f02c152800deb7deb9f21 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Fri, 10 Aug 2018 10:36:23 +0200
Subject: [PATCH] libtiff: add a comment about the patches

---
 pkgs/development/libraries/libtiff/default.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/libtiff/default.nix b/pkgs/development/libraries/libtiff/default.nix
index d37e93e6f82f..bf0393fd89a6 100644
--- a/pkgs/development/libraries/libtiff/default.nix
+++ b/pkgs/development/libraries/libtiff/default.nix
@@ -13,6 +13,8 @@ stdenv.mkDerivation rec {
 
   prePatch = let
       debian = fetchurl {
+        # When the URL disappears, it typically means that Debian has new patches
+        # (probably security) and updating to new tarball will apply them as well.
         url = http://http.debian.net/debian/pool/main/t/tiff/tiff_4.0.9-6.debian.tar.xz;
         sha256 = "10yk5npchxscgsnd7ihd3bbbw2fxkl7ni0plm43c9q4nwp6ms52f";
       };