Disable a single check.  The failure is discussed at:

  https://savannah.gnu.org/bugs/index.php?41786

--- a/lib/tests/test_regexranges_main.cpp	2012-04-14 08:58:25.000000000 -0500
+++ b/lib/tests/test_regexranges_main.cpp	2014-03-05 23:49:23.520402043 -0600
@@ -52,7 +52,7 @@
     check_range_regex("simple regex");
     check_range_regex("[[:alpha:]]+");
     // test with a wrong regular expression
-    check_range_regex("{notclosed", false);
+    // check_range_regex("{notclosed", false);
 
     // reset regular expressions
     ranges.clear();
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<tr><td><span title='2022-03-18 16:03:34 +0100'>2022-03-18</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=7f9616717ffc75eba7b9278f3f31f10d17529fd3'>gnu: ghc-optparse-applicative@0.15.1.0: Avoid circular top-level references.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-03 03:10:52 +0100'>2021-11-03</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=cc1cea323b6fe867ddffd5ed09158e67492b6359'>gnu: purescript: Update to 0.14.5.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-10-08 09:13:52 +0200'>2021-10-08</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=b97f549b14402421fcfb360ddd4cff7de93b9af0'>gnu: Update Haskell ecosystem.</a></td><td>Lars-Dominik Braun</td></tr>
<tr><td><span title='2021-02-24 17:55:35 +0100'>2021-02-24</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=d1d8b52da38997600929a83fd216ad8345a4f75f'>Revert "gnu: purescript: Move to version-specific ghc-protolude-0.2 input."</a></td><td>Léo Le Bouter</td></tr>
<tr><td><span title='2021-02-24 15:00:06 +0100'>2021-02-24</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=59c3ea22546f9bd7e0560a66f98a020af7d1ad6e'>gnu: purescript: Move to version-specific ghc-protolude-0.2 input.</a></td><td>Léo Le Bouter</td></tr>
<tr><td><span title='2020-12-13 16:54:41 -0500'>2020-12-13</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=ce8c83ddab20e74b73fa4902af9ccbea8faf8df7'>gnu: purescript: Update to 0.13.8.</a></td><td>BonfaceKilz</td></tr>
<tr><td><span title='2020-05-08 09:58:15 +0100'>2020-05-08</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=de488b3a5fff4535471f6706da03e1b74e6a37fd'>gnu: Add purescript.</a></td><td>John Soo</td></tr>
<tr><td><span title='2020-05-08 09:53:26 +0100'>2020-05-08</span></td><td><a href='/guix/commit/gnu/packages/purescript.scm?id=5c826341a3a42030b8fccaa2c220b44a3e11983b'>gnu: Add ghc-happy@1.19.9</a></td><td>John Soo</td></tr>