The Clar test framework has a bug whereby it skips the parsing phase
on files with mtime=0.

Reported upstream at <https://github.com/vmg/clar/pull/78>.

diff --git a/tests/generate.py b/tests/generate.py
index b639c8f..111ca41 100644
--- a/tests/generate.py
+++ b/tests/generate.py
@@ -63,3 +63,3 @@ class Module(object):
 
-        self.mtime = 0
+        self.mtime = None # Guix sets all file mtimes to '0'
         self.enabled = True
'header'>
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<div class='path'>path: <a href='/guix/log/?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836'>root</a>/<a href='/guix/log/gnu?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836'>gnu</a>/<a href='/guix/log/gnu/packages?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836'>packages</a>/<a href='/guix/log/gnu/packages/patches?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836'>patches</a>/<a href='/guix/log/gnu/packages/patches/mit-krb5-qualify-short-hostnames.patch?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836'>mit-krb5-qualify-short-hostnames.patch</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/gnu/packages/patches/mit-krb5-qualify-short-hostnames.patch?id=8bd0b533b30d7ee5e03aee99a2eb96d5b0b1c836&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-03-14 12:02:53 +0100'>2020-03-14</span></td><td><a href='/guix/commit/gnu/packages/patches/mit-krb5-qualify-short-hostnames.patch?id=e59d958a9c9a509ce34ca553a5b1b03e406d561f'>gnu: mit-krb5: Fix segfault in gsasl test suite.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/mit-krb5-qualify-short-hostnames.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/kerberos.scm (mit-krb5)[source](patches): New field.
</span></span></td><td>Marius Bakke</td></tr>