NixOS/nixpkgs — pull request #4543 by taku0 (2014-10-15 13:50:39+00:00)
Title: thunderbird-bin: update to version 31.2.0

With this patch, auto-generated hashes are stored in a separate file. We can safely edit default.nix.
Now we use sha1 hashes provided by Mozilla, so that downloading sources is no longer required to update the Nix expression.