Patch from NixOS retrieved from
https://raw.githubusercontent.com/NixOS/nixpkgs/master/pkgs/development/libraries/accountsservice/drop-prefix-check-extensions.patch.

diff --git a/src/extensions.c b/src/extensions.c
index 038dcb2..830465d 100644
--- a/src/extensions.c
+++ b/src/extensions.c
@@ -121,16 +121,7 @@ daemon_read_extension_directory (GHashTable  *ifaces,
                         continue;
                 }
 
-                /* Ensure it looks like "../../dbus-1/interfaces/${name}" */
-                const gchar * const prefix = "../../dbus-1/interfaces/";
-                if (g_str_has_prefix (symlink, prefix) && g_str_equal (symlink + strlen (prefix), name)) {
-                        daemon_read_extension_file (ifaces, filename);
-                }
-                else {
-                        g_warning ("Found accounts service vendor extension symlink %s, but it must be exactly "
-                                   "equal to '../../dbus-1/interfaces/%s' for forwards-compatibility reasons.",
-                                   filename, name);
-                }
+                daemon_read_extension_file (ifaces, filename);
         }
 
         g_dir_close (dir);
ref='/guix/tree/tests/monads.scm?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>tree</a><a href='/guix/commit/tests/monads.scm?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>commit</a><a href='/guix/diff/tests/monads.scm?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/monads.scm'>
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<div class='path'>path: <a href='/guix/log/?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>root</a>/<a href='/guix/log/tests?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>tests</a>/<a href='/guix/log/tests/monads.scm?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2'>monads.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/monads.scm?id=c3d8f39b5b0abc8f73f86c7f1247b997558131b2&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-10-22 01:46:55 +0200'>2022-10-22</span></td><td><a href='/guix/commit/tests/monads.scm?id=a3619079f95213c4f983e69210ed12b38fd31022'>Remove now unnecessary uses of (guix grafts).</a><span class='msg-avail'>...<span class='msg-tooltip'>These modules would use (guix grafts) just to access '%graft?' and
related bindings, which are now in (guix store).

* gnu/ci.scm,
guix/gexp.scm,
guix/lint.scm,
guix/scripts.scm,
guix/scripts/archive.scm,
guix/scripts/build.scm,
guix/scripts/challenge.scm,
guix/scripts/deploy.scm,
guix/scripts/environment.scm,
guix/scripts/home.scm,
guix/scripts/pack.scm,
guix/scripts/package.scm,
guix/scripts/pull.scm,
guix/scripts/size.scm,
guix/scripts/system.scm,
guix/scripts/weather.scm,
tests/builders.scm,
tests/channels.scm,
tests/cpan.scm,
tests/derivations.scm,
tests/gexp.scm,
tests/graph.scm,
tests/guix-daemon.sh,
tests/monads.scm,
tests/pack.scm,
tests/packages.scm,
tests/profiles.scm,
tests/system.scm: Remove #:use-module (guix grafts).
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-07-10 23:57:14 +0200'>2022-07-10</span></td><td><a href='/guix/commit/tests/monads.scm?id=9fdc4b6c283c5aa5cf10205d87fb2c58b829b9d0'>monads: Add 'mparameterize'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/system-tests.scm (mparameterize): Move to...
* guix/monads.scm (mparameterize): ... here.
* tests/monads.scm ("mparameterize"): New test.
* .dir-locals.el (c-mode): Add it.
</span></span></td><td>Ludovic Courtès</td></tr>