Patch borrowed from nixpkgs.  Works around warning message produced by the
current version of Moose:

"Passing a list of values to enum is deprecated. Enum values should be wrapped
in an arrayref."

--- Net-Amazon-S3-0.60/lib/Net/Amazon/S3/Client/Object.pm	2015-04-15 16:18:47.226410022 -0500
+++ Net-Amazon-S3-0.60/lib/Net/Amazon/S3/Client/Object.pm	2015-04-15 16:19:25.410408425 -0500
@@ -19,7 +19,7 @@
     [ qw(private public-read public-read-write authenticated-read) ];
 
 enum 'StorageClass' =>
-    qw(standard reduced_redundancy);
+    [ qw(standard reduced_redundancy) ];
 
 has 'client' =>
     ( is => 'ro', isa => 'Net::Amazon::S3::Client', required => 1 );
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<tr><td><span title='2021-04-28 15:51:12 +0200'>2021-04-28</span></td><td><a href='/guix/commit/gnu/tests/install.scm?id=95b3fc12bce680e8e1dafffc62c7b1754352de7e'>tests: Add gui-uefi-installed-os test.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-01-27 11:38:44 -0500'>2021-01-27</span></td><td><a href='/guix/commit/gnu/tests/install.scm?id=886302fcf7c7796674ddb3b99b07af6c430591bd'>system: tests: Add a Btrfs RAID system test.</a><span class='msg-avail'>...</span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-01-20 12:50:47 +0100'>2021-01-20</span></td><td><a href='/guix/commit/gnu/tests/install.scm?id=c64adff4c67fbd43497cbc124865e87dce2f88e6'>tests: install: Fix build.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-12-21 18:41:11 +0100'>2020-12-21</span></td><td><a href='/guix/commit/gnu/tests/install.scm?id=f00e68ace070fd5240a4b5874e61c26f6e909b6c'>system: Allow separated /boot and encrypted root.</a><span class='msg-avail'>...</span></td><td>Miguel Ángel Arruga Vivas</td></tr>