This patch allows us to use glibc's build system to build locales
in a package separate from glibc.

  1. Use 'localedef' from $PATH since we are not rebuilding it.
  2. Use '--no-archive' to avoid building the big locale archive, and
     because the already-built 'localedef' would want to write it
     to '/run/current-system/locale', which is not possible.
  3. Pass $(localedir)/$$locale to install files in the right place, and
     because otherwise, 'localedef' fails with:
     "cannot write output files to `(null)'".

--- glibc-2.20/localedata/Makefile	2014-09-07 10:09:09.000000000 +0200
+++ glibc-2.20/localedata/Makefile	2015-02-11 10:23:55.560545568 +0100
@@ -217,7 +217,7 @@ INSTALL-SUPPORTED-LOCALES=$(addprefix in
 
 # Sometimes the whole collection of locale files should be installed.
 LOCALEDEF=I18NPATH=. GCONV_PATH=$(common-objpfx)iconvdata LC_ALL=C \
-$(rtld-prefix) $(common-objpfx)locale/localedef
+  localedef --no-archive
 install-locales: $(INSTALL-SUPPORTED-LOCALES)
 
 install-locales-dir:
@@ -234,7 +234,7 @@ $(INSTALL-SUPPORTED-LOCALES): install-lo
 	input=`echo $$locale | sed 's/\([^.]*\)[^@]*\(.*\)/\1\2/'`; \
 	$(LOCALEDEF) --alias-file=../intl/locale.alias \
 		     -i locales/$$input -c -f charmaps/$$charset \
-		     $(addprefix --prefix=,$(install_root)) $$locale; \
+		     $(addprefix --prefix=,$(install_root)) $(localedir)/$$locale; \
 	echo ' done'; \
 
 tst-setlocale-ENV = LC_ALL=ja_JP.EUC-JP
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<tr><td><span title='2022-07-27 11:35:27 +0200'>2022-07-27</span></td><td><a href='/guix/commit/gnu/packages/nss.scm?id=f098d93352dcc620c8d1501b49443535f30a5184'>gnu: nss, nss-certs: Update to 3.81.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-29 21:22:33 +0200'>2022-06-29</span></td><td><a href='/guix/commit/gnu/packages/nss.scm?id=01d1b285b897342a0153cd8bd7c88db134f5e5a2'>gnu: nss: Use G-expressions.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-29 21:22:33 +0200'>2022-06-29</span></td><td><a href='/guix/commit/gnu/packages/nss.scm?id=b316d8b75187e8d4532dc7e9f2ae92d76831e6e8'>gnu: nspr: Use G-expressions.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-29 21:22:33 +0200'>2022-06-29</span></td><td><a href='/guix/commit/gnu/packages/nss.scm?id=fd004ddafafee6d2fcbad99e2259b281b2f2e7a9'>gnu: nss, nss-certs: Update to 3.80.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-06-29 21:22:33 +0200'>2022-06-29</span></td><td><a href='/guix/commit/gnu/packages/nss.scm?id=de9d389c547765177f561cdcb53804ec0fda0a42'>gnu: nspr: Update to 4.34.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>