libtiff: add a comment about the patches

2018-08-10 10:36:23 +02:00 · 2018-08-10 10:36:23 +02:00 · 4596251dd1
commit 4596251dd1
parent 3fbb842518
1 changed files with 2 additions and 0 deletions
--- 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";
      };