This patch is taken from debian's glibc package (generate-supported.mk).
It install the localedata/SUPPORTED file of the glibc. This file lists
all the supported locales of the glibc.

diff --git a/localedata/Makefile b/localedata/Makefile
index 65079f9eb8..14818f84e0 100644
--- a/localedata/Makefile
+++ b/localedata/Makefile
@@ -169,7 +169,8 @@ endif
 # Files to install.
 install-others := $(addprefix $(inst_i18ndir)/, \
 			      $(addsuffix .gz, $(charmaps)) \
-			      $(locales))
+			      $(locales)) \
+                   $(inst_i18ndir)/SUPPORTED
 
 tests: $(objdir)/iconvdata/gconv-modules
 
@@ -380,6 +381,14 @@ endif
 
 include SUPPORTED
 
+$(inst_i18ndir)/SUPPORTED: SUPPORTED $(+force)
+	for locale in $(SUPPORTED-LOCALES); do \
+		[ $$locale = true ] && continue; \
+		echo $$locale | sed 's,/, ,' >> LOCALES; \
+	done
+	$(make-target-directory)
+	$(INSTALL_DATA) LOCALES $@
+
 INSTALL-SUPPORTED-LOCALE-ARCHIVE=$(addprefix install-archive-, $(SUPPORTED-LOCALES))
 INSTALL-SUPPORTED-LOCALE-FILES=$(addprefix install-files-, $(SUPPORTED-LOCALES))
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<tr><td><span title='2024-08-31 10:45:00 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=1572a90859bce0d33df9437dc349314ce371c9ed'>gnu: enchant: Update to 2.6.9.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (enchant): Update to 2.6.9.

Change-Id: I7d5f229b0308e7a09101df0b8af344e03f2bbdbb
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-08-31 10:45:00 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=3a869c965a3238cb89cc28f378fdf3a50d687552'>gnu: enchant: Add Nuspell support.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (enchant)[inputs]: Add NUSPELL.

Change-Id: I60d70e6b6e4952722559848f715fc68dcf3e11f4
Reviewed-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-08-31 10:45:00 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=f44c312e2139887103b9bbd07d2d9034f150acd0'>gnu: enchant: Improve package style.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (enchant)[arguments]: Use G-expressions.
[native-inputs]: Drop input labels.
[description]: Be more informative and less technical.

Change-Id: I908fbbfcdc9f21beb1d6e05eec2dbc154b429831
Reviewed-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-08-31 10:45:00 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=bd0b6a1b6812590ebfd68a407cc8051c7139774b'>gnu: enchant: Update to 2.6.8.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (enchant): Update to 2.6.8.
[native-inputs]: Add GROFF.

Change-Id: I8c7d7e2b9124a55401c6623fd76eacc0878ad6e6
Reviewed-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-03-25 17:26:24 +0100'>2024-03-25</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=929ddec8f4a181be653152c7436581c2adc54eee'>gnu: nuspell: Add search path specification for DICPATH.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (nuspell)[native-search-path]: Add DICPATH.

This change is required to let Nuspell detect Hunspell dictionaries.

Change-Id: I731752142afcae1fc2b91c01fb9dbe914d33244f
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-03-25 17:21:11 +0100'>2024-03-25</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=53aa1677cfb084056f44646e4dfc27d91de82c98'>gnu: nuspell: Remove unnecessary inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (nuspell)[native-inputs]: Remove GIT-MINIMAL and
PERL.
[inputs]: remove BOOST.

Change-Id: I1847e4c68a5c40c5ebae75a0bbe651384250d8a7
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2024-03-25 16:26:48 +0100'>2024-03-25</span></td><td><a href='/guix/commit/gnu/packages/enchant.scm?id=01d7ce85c89bc25876538f191be6bed4226d1593'>gnu: nuspell: Update to 5.1.4.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/enchant.scm (nuspell): Update to 5.1.4.
[native-inputs]: Use CATCH2-3.  Remove comment about RONN, which is no longer used.

Change-Id: I62fa0568dacde29bef5065b2ee23c060373727cf
</span></span></td><td>Nicolas Goaziou</td></tr>