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 $(inst_complocaledir)/$$locale to install files in the right
     place, and because otherwise, 'localedef' fails with:
     "cannot write output files to `(null)'".

diff -ru glibc-2.29-old/localedata/Makefile glibc-2.29-new/localedata/Makefile
--- glibc-2.29-old/localedata/Makefile	2019-01-31 11:45:36.000000000 -0500
+++ glibc-2.29-new/localedata/Makefile	2019-07-03 22:48:35.662015071 -0400
@@ -385,7 +385,7 @@
 
 # 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-locale-archive
 
 # Create and install the locale-archive file.
@@ -414,7 +414,7 @@
 	input=`echo $$locale | sed 's/\([^.]*\)[^@]*\(.*\)/\1\2/'`; \
 	$(LOCALEDEF) $$flags --alias-file=../intl/locale.alias \
 		     -i locales/$$input -f charmaps/$$charset \
-		     $(addprefix --prefix=,$(install_root)) $$locale \
+		     $(addprefix --prefix=,$(install_root)) $(inst_complocaledir)/$$locale \
 	&& echo ' done';
 endef
 
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<div class='path'>path: <a href='/guix/log/?id=0726d4ea7cb882dd1d3887303e260aba433dd1ef'>root</a>/<a href='/guix/log/gnu?id=0726d4ea7cb882dd1d3887303e260aba433dd1ef'>gnu</a>/<a href='/guix/log/gnu/packages?id=0726d4ea7cb882dd1d3887303e260aba433dd1ef'>packages</a>/<a href='/guix/log/gnu/packages/conkeror.scm?id=0726d4ea7cb882dd1d3887303e260aba433dd1ef'>conkeror.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/packages/conkeror.scm?id=0726d4ea7cb882dd1d3887303e260aba433dd1ef&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-10-29 11:21:12 +0100'>2017-10-29</span></td><td><a href='/guix/commit/gnu/packages/conkeror.scm?id=11e5e932ad037cb7f7c1b55989e13a4ca051b081'>gnu: conkeror: Update to 1.1.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/conkeror.scm (conkeror): Update to 1.1.0.
</span></span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2016-07-03 20:30:08 +0300'>2016-07-03</span></td><td><a href='/guix/commit/gnu/packages/conkeror.scm?id=3fa3151f8c5fd73bfc9ba592b88066ac915358b1'>gnu: conkeror: Update to 1.0.3</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/conkeror.scm (conkeror): Update to 1.0.3.

Signed-off-by: Efraim Flashner &lt;efraim@flashner.co.il&gt;
</span></span></td><td>John J Foerch</td></tr>
<tr><td><span title='2015-11-13 23:45:55 +0800'>2015-11-13</span></td><td><a href='/guix/commit/gnu/packages/conkeror.scm?id=a124bbd2f41410e1c33654f4ff9865765baf28a7'>gnu: Adjust formatting as recommended by 'guix lint'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/aidc.scm (barcode, qrencode),
  gnu/packages/bash.scm (bash, bash-completion),
  gnu/packages/busybox.scm (busybox),
  gnu/packages/cdrom.scm (cdparanoia),
  gnu/packages/cmake.scm (cmake),
  gnu/packages/conkeror.scm (conkeror),
  gnu/packages/cook.scm (cook),
  gnu/packages/curl.scm (curl),
  gnu/packages/docbook.scm (docbook-xsl),
  gnu/packages/enlightenment.scm (enlightenment),
  gnu/packages/games.scm (abbaye),
  gnu/packages/geeqie.scm (exiv2),
  gnu/packages/gimp.scm (gegl),
  gnu/packages/gl.scm (glu, freeglut, ftgl),
  gnu/packages/glib.scm (glib),
  gnu/packages/gnome.scm (orbit2, gconf, geocode-glib),
  gnu/packages/gstreamer.scm (gstreamer, gst-plugins-base),
  gnu/packages/linux.scm (util-linux),
  gnu/packages/lisp.scm (gcl, ecl),
  gnu/packages/maths.scm (gnuplot, hdf5),
  gnu/packages/ssh.scm (dropbear),
  gnu/packages/web.scm (json-c): Remove tabulations and trailing
  white spaces or reformat to fit within 80 columns.
* gnu/packages/audio.scm (aubio),
  gnu/packages/emacs.scm (emacs-s),
  gnu/packages/engineering.scm (geda-gaf),
  gnu/packages/games.scm (dosbox),
  gnu/packages/gnome.scm (gusb),
  gnu/packages/gtk.scm (gtk+),
  gnu/packages/guile.scm (guile-wisp),
  gnu/packages/hurd.scm (hurd-headers),
  gnu/packages/wm.scm (i3-wm): Adjust synopsis or description.
</span></span></td><td>宋文武</td></tr>
<tr><td><span title='2015-10-22 03:59:27 -0500'>2015-10-22</span></td><td><a href='/guix/commit/gnu/packages/conkeror.scm?id=1a6566724004af32c2016092d9bc6dfc2c28a933'>gnu: conkeror: Upgrade to 1.0pre1.20150730.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/conkeror.scm (conkeror): Upgrade to 1.0pre1.20150730.
  [arguments]: Adjust #:make-flags and #:phases for new Makefile, and
  use modify-phases.
</span></span></td><td>Eric Bavier</td></tr>