Submitted upstream at https://bugs.netsurf-browser.org/mantis/view.php?id=2870

--- libcss-0.9.2/test/dump.h.orig
+++ libcss-0.9.2/test/dump.h
@@ -131,7 +131,7 @@ void dump_rule_media(css_rule_media *s, char **buf, size_t *buflen)
 	char *ptr = *buf;
 	css_rule *rule;
 
-	ptr += sprintf(ptr, "| @media %s%03lx",
+	ptr += sprintf(ptr, "| @media %s%03" PRIx64,
 			s->media->negate_type ? "not " : "",
 			s->media->type);
 
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<div class='path'>path: <a href='/guix/log/?id=a37a87ddf19fa9651b2db601c9f8bd7270e25223'>root</a>/<a href='/guix/log/gnu?id=a37a87ddf19fa9651b2db601c9f8bd7270e25223'>gnu</a>/<a href='/guix/log/gnu/compression.scm?id=a37a87ddf19fa9651b2db601c9f8bd7270e25223'>compression.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/gnu/compression.scm?id=a37a87ddf19fa9651b2db601c9f8bd7270e25223&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-09-24 14:49:09 +0200'>2022-09-24</span></td><td><a href='/guix/commit/gnu/compression.scm?id=ebe9d660a55629f2506db124b0e016885fc61e5c'>gnu: Add compression module.</a><span class='msg-avail'>...<span class='msg-tooltip'>Move the compression record to a dedicated module so that it can be used
outside (guix scripts pack) module.

* guix/scripts/pack.scm (&lt;compressor&gt;, %compressors, lookup-compressor): Move
it to ...
* gnu/compression.scm: ... this new file.
* gnu/ci.scm: Adapt it.
* local.mk (GNU_SYSTEM_MODULES): Add it.
</span></span></td><td>Mathieu Othacehe</td></tr>