Unrar contains security vulnerabilities and has thus been removed from Guix.
From a16f97b02bd8afd0ec05c471e156f631f2cc6eec Mon Sep 17 00:00:00 2001
From: Brendan Tildesley <mail@brendan.scot>
Date: Tue, 26 Mar 2019 22:17:03 +1100
Subject: [PATCH] Remove test_unrar.

---
 src/calibre/test_build.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/calibre/test_build.py b/src/calibre/test_build.py
index d67afd20a6..709132ef17 100644
--- a/src/calibre/test_build.py
+++ b/src/calibre/test_build.py
@@ -220,10 +220,6 @@ class BuildTest(unittest.TestCase):
         from calibre.gui2.win_file_dialogs import test
         test()
 
-    def test_unrar(self):
-        from calibre.utils.unrar import test_basic
-        test_basic()
-
     @unittest.skipUnless(iswindows, 'WPD is windows only')
     def test_wpd(self):
         wpd = plugins['wpd'][0]
-- 
2.21.0

r><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<div class='path'>path: <a href='/guix/log/?id=a59fdbb4d50bd9add352ec5da99fb437df71cc3c'>root</a>/<a href='/guix/log/README?id=a59fdbb4d50bd9add352ec5da99fb437df71cc3c'>README</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/README?id=a59fdbb4d50bd9add352ec5da99fb437df71cc3c&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-05-20 01:58:04 +0200'>2021-05-20</span></td><td><a href='/guix/commit/README?id=c0087d33705f53cc3619a1a43a33602aaecc3a8b'>The #guix channel is hosted by Libera Chat.</a><span class='msg-avail'>...<span class='msg-tooltip'>* README (Contact): Update network name.
* ROADMAP: Likewise.
* doc/contributing.texi (Contributing): Likewise.
* doc/guix.texi (After System Installation): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-23 12:57:20 -0400'>2020-10-23</span></td><td><a href='/guix/commit/README?id=b5aaa3a4fb985d21e21e2a67f48b52f13ebd4728'>doc: Update README.</a><span class='msg-avail'>...<span class='msg-tooltip'>* README (Installation): Do not mention installing Guix from Git anymore.
(Building from Git): Add section.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-10-22 22:47:54 -0400'>2020-10-22</span></td><td><a href='/guix/commit/README?id=503d2bfde08f9bf97bbf430516d2f19faedd4319'>README: Refer to the manual for building from Git.</a><span class='msg-avail'>...<span class='msg-tooltip'>* README (Installing Guix from Guix): Remove section.
(Installation): For installing from Git, refer to the "Building from Git"
section of the manual and suggest using './pre-inst-env guix pull' rather than
'make install' for installing Guix.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2020-06-02 18:55:53 +0200'>2020-06-02</span></td><td><a href='/guix/commit/README?id=c75a80189fc19f6ff8b4c82d1d1801be6763b6d2'>doc: Update README to refer to the manual.</a><span class='msg-avail'>...<span class='msg-tooltip'>* README (Requirements): Refer to the manual.
(Installation): Update URL of the manual.
</span></span></td><td>Ludovic Courtès</td></tr>