# GPGIT Broken by Breaking Change in GnuPG::Interface

I know a number of you use some code which I wrote
([gpgit](https://gitlab.com/grepular/gpgit)) for [automatically encrypting your
incoming email](/Automatically_Encrypting_all_Incoming_Email) with your public
PGP key. I just did a dist-upgrade on my mail server, (a [Debian
Testing](https://www.debian.org/releases/testing/) box) and it broke hard. One
of the modules it uses is
[Mail::GnuPG](https://search.cpan.org/search?query=Mail%3A%3AGnuPG). Mail::GnuPG
uses
[GnuPG::Interface](https://search.cpan.org/search?query=GnuPG%3A%3AInterface).
Doing the dist-upgrade, upgraded GnuPG::Interface from version 0.46 to 0.48\.
Unfortunately, a change in 0.48 (or perhaps 0.47) has broken Mail::GnuPG, and in
turn, gpgit.

If you're going to upgrade, apply the following patch to your systems
Mail/GnuPG.pm file first:

```diff
--- GnuPG.pm.ORIG       2014-03-12 17:07:52.209701232 +0000
+++ GnuPG.pm    2014-03-12 17:11:22.161473944 +0000
@@ -478,10 +478,12 @@
   $self->_set_options($gnupg);
   my @keys = $gnupg->get_public_keys();
   foreach my $key (@keys) {
-    foreach my $uid ($key->user_ids) {
-      # M::A may not parse the gpg stuff properly.  Cross fingers
-      my ($a) = Mail::Address->parse($uid->as_string); # list context, please
-      $key_cache{$a->address}=1 if ref $a;
+    foreach ($key->user_ids) { 
+      foreach my $uid (ref($_) eq 'ARRAY' ? @$_ : ($_)) {
+        # M::A may not parse the gpg stuff properly.  Cross fingers
+        my ($a) = Mail::Address->parse($uid->as_string); # list context, please
+        $key_cache{$a->address}=1 if ref $a;
+      }
     }
   }
 }
```

I've reported this as a critical bug to both the Mail::GnuPG and
GnuPG::Interface packagers:
[https://rt.cpan.org/Ticket/Display.html?id=93797](https://rt.cpan.org/Ticket/Display.html?id=93797)
[https://rt.cpan.org/Ticket/Display.html?id=93826](https://rt.cpan.org/Ticket/Display.html?id=93826)
I'm hoping it gets fixed in GnuPG::Interface as that seems to be being actively
developed whereas Mail::GnuPG isn't.