This patch adds a "guix gc" button to the low disk space notification
that 'gsd-housekeeping' emits.

diff --git a/plugins/housekeeping/gsd-disk-space.c b/plugins/housekeeping/gsd-disk-space.c
index bd3437e..89027d8 100644
--- a/plugins/housekeeping/gsd-disk-space.c
+++ b/plugins/housekeeping/gsd-disk-space.c
@@ -546,6 +546,21 @@ empty_trash_callback (NotifyNotification *n,
         notify_notification_close (n, NULL);
 }
 
+static void
+guix_gc_callback (NotifyNotification *n,
+                  const char         *action)
+{
+        const gchar *argv[] = { "guix", "gc", NULL };
+
+        g_assert (action != NULL);
+        g_assert (strcmp (action, "run-guix-gc") == 0);
+
+        g_spawn_async (NULL, (gchar **) argv, NULL, G_SPAWN_SEARCH_PATH,
+                       NULL, NULL, NULL, NULL);
+
+        notify_notification_close (n, NULL);
+}
+
 static void
 on_notification_closed (NotifyNotification *n)
 {
@@ -591,6 +606,13 @@ ldsm_notify (const char *summary,
                                                 g_free);
         }
 
+        notify_notification_add_action (notification,
+                                        "run-guix-gc",
+                                        _("Collect Unused Guix Items"),
+                                        (NotifyActionCallback) guix_gc_callback,
+                                        NULL,
+                                        NULL);
+
         has_trash = ldsm_mount_has_trash (mount_path);
 
         if (has_trash) {
guix/log/etc/teams'>
<input type='hidden' name='id' value='b0416b8503e38746717a2d1167f9d1410634981e'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=b0416b8503e38746717a2d1167f9d1410634981e'>root</a>/<a href='/guix/log/etc?id=b0416b8503e38746717a2d1167f9d1410634981e'>etc</a>/<a href='/guix/log/etc/teams?id=b0416b8503e38746717a2d1167f9d1410634981e'>teams</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/etc/teams?id=b0416b8503e38746717a2d1167f9d1410634981e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-03-19 03:40:08 -0400'>2024-03-19</span></td><td><a href='/guix/commit/etc/teams?id=a8ba2f3507d03ec77506a03bf84d62f9cb439f8e'>teams: qt: Remove erroneous comment at top of scripts.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/teams/qt/common.scm: Remove erroneous comment.
* etc/teams/qt/qt-manifest.scm: Likewise.
* etc/teams/qt/qt5-manifest.scm: Likewise.

Change-Id: I87a0ea669caa0ba5049b48a4f04fda58518c3f05
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2024-01-04 12:31:45 +0200'>2024-01-04</span></td><td><a href='/guix/commit/etc/teams?id=8b559b37eafbf51fe4a602c091754a38b8ad28f7'>etc: Add rust-team manifest.</a><span class='msg-avail'>...<span class='msg-tooltip'>Change-Id: Ie43bd4a88d35270dcac7baaabeafbcc3a755db1e
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-08-22 12:32:20 -0400'>2023-08-22</span></td><td><a href='/guix/commit/etc/teams?id=0b994bb9b10b381376f1dfd8bd2bc9173ede2a66'>etc: Add Qt manifests for Qt maintenance.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/teams/qt/common.scm: New file.
* etc/teams/qt/qt-manifest.scm: Likewise.
* etc/teams/qt/qt5-manifest.scm: Likewise.
</span></span></td><td>Maxim Cournoyer</td></tr>