The METIS interface from Scotch may segfault if passed NULL to indicate a
default parameter, so use the older calling style.

--- a/SRC/get_perm_c.c	2014-05-16 23:38:30.070835316 -0500
+++ b/SRC/get_perm_c.c	2014-05-16 23:39:04.582836211 -0500
@@ -70,11 +70,13 @@
 #else
 
     /* Earlier version 3.x.x */
-    /* METIS_NodeND(&nm, b_colptr, b_rowind, &numflag, metis_options,
-       perm, iperm);*/
+    METIS_NodeND(&nm, b_colptr, b_rowind, &numflag, metis_options,
+                 perm, iperm);
 
     /* Latest version 4.x.x */
+#if 0
     METIS_NodeND(&nm, b_colptr, b_rowind, NULL, NULL, perm, iperm);
+#endif
 
     /*check_perm_dist("metis perm",  n, perm);*/
 #endif
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<tr><td><span title='2020-05-05 23:45:56 +0200'>2020-05-05</span></td><td><a href='/guix/commit/po/doc/guix-manual.ru.po?id=0701274446bbd39b053a0c65947fd7f1319f7bf6'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-12 00:18:05 +0200'>2020-04-12</span></td><td><a href='/guix/commit/po/doc/guix-manual.ru.po?id=935ef44b398353b5b6af94e185d7b0c3d833db0b'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-03-23 00:06:58 +0100'>2020-03-23</span></td><td><a href='/guix/commit/po/doc/guix-manual.ru.po?id=86603d8660e42a3b5d8b407e456a98429943bc7e'>nls: Update.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-05-13 10:46:03 +0200'>2019-05-13</span></td><td><a href='/guix/commit/po/doc/guix-manual.ru.po?id=3bac7e6495934de9913e6186d954d1331883e064'>doc: Add Russian translation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* doc/local.mk (info_TEXINFOS): Add guix.ru.texi.
(TRANSLATED_INFO): Add {guix,contributing}.ru.texi.
* po/doc/local.mk (DOC_PO_FILES): Add guix-manual.ru.po.
* po/doc/guix-manual.ru.po: New file.
</span></span></td><td>Ludovic Courtès</td></tr>