Work around build failure due to XCB "length" element.
Patch from <https://sources.debian.org/patches/xelb/0.18-4/>.

Author: Martin <debacle@debian.org>
Bug: https://github.com/ch11ng/xelb/issues/28
Bug-Debian: https://bugs.debian.org/1017294

---
--- a/el_client.el
+++ b/el_client.el
@@ -519,7 +519,7 @@
     (`list (xelb-parse-list node))
     (`exprfield (xelb-parse-exprfield node))
     (`switch (xelb-parse-switch node))
-    ((or `comment `doc))                ;simply ignored
+    ((or `comment `doc `length))                ;simply ignored
     (x (error "Unsupported structure content: <%s>" x))))
 
 ;; The car of the result shall be renamed to prevent duplication of slot names
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<tr><td><span title='2022-08-01 17:20:27 +0200'>2022-08-01</span></td><td><a href='/guix/commit/gnu/packages/patches/fail2ban-0.11.2_fix-test-suite.patch?id=d7e7494bc4d69de9db49488ee812e572c3250211'>gnu: Add fail2ban.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/admin.scm (fail2ban): New variable.
* gnu/packages/patches/fail2ban-0.11.2_CVE-2021-32749.patch,
gnu/packages/patches/fail2ban-0.11.2_fix-setuptools-drop-2to3.patch,
gnu/packages/patches/fail2ban-0.11.2_fix-test-suite.patch,
gnu/packages/patches/fail2ban-paths-guix-conf.patch,
gnu/packages/patches/fail2ban-python310-server-action.patch,
gnu/packages/patches/fail2ban-python310-server-actions.patch,
gnu/packages/patches/fail2ban-python310-server-jails.patch: New files.
* gnu/local.mk (dist_patch_DATA): Add them.

Co-authored-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>muradm</td></tr>