Do not try to regenerate po files; use the reference files that are packaged
in the tarball.

--- a/Makefile.in	2010-06-30 17:02:28.000000000 -0500
+++ b/Makefile.in	2014-08-16 00:22:38.447050269 -0500
@@ -1022,15 +1022,7 @@
 
 i18n/en.thl i18n/: $(po_document_dir)/po_document/$(PACKAGE)_document.pot
 	$(MKDIR_P) i18n
-	if test '$(USE_NLS)' = 'yes'; then \
-	  for file in "$(srcdir)/$(po_document_dir)/po_document/"*".po"; do lang=`basename "$$file" .po | sed 's/\..*//'`; \
-		test "$$lang" = 'en' && continue; \
-		msgexec -i "$$file" "$(srcdir)/gettext_to_separated.pl" | "$(srcdir)/separated_to_hash.pl" $$lang > i18n/$$lang.thl; \
-	  done; \
-	  msgexec -i $< "$(srcdir)/gettext_to_separated.pl" | "$(srcdir)/separated_to_hash.pl" en > i18n/en.thl; \
-	else \
-	  cp -p i18n_ref/*.thl i18n; \
-	fi
+	cp -p i18n_ref/*.thl i18n
 
 i18n_ref:
 	$(MKDIR_P) i18n_ref

Have install-sh install .mo files locally for in-source tests, so that msgfmt
is not needed.

--- a/Makefile.in	2010-06-30 17:02:28.000000000 -0500
+++ b/Makefile.in	2014-08-16 00:22:38.447050269 -0500
@@ -1052,19 +1044,8 @@
 # update the po files, and install locally the .mo files for the in
 # source tests
 check-local: makeinfo.pl texi2any.pl
-	if test '$(USE_NLS)' = 'yes'; then \
-	  cd $(po_document_dir)/po_document && $(MAKE) $(AM_MAKEFLAGS) update-po; \
-	fi
-	rm -rf locales
-	for file in "$(srcdir)/$(po_document_dir)/po_document/"*.po; do \
-	  basename=`basename "$$file" .po` ; \
-	  $(MKDIR_P) "locales/$$basename/LC_MESSAGES/" ; \
-	  if test '$(USE_NLS)' = 'yes'; then \
-	    $(MSGFMT) "$$file" -o "locales/$$basename/LC_MESSAGES/texi2html_document.mo" ; \
-	  else \
-	    cp -p "$(srcdir)/$(po_document_dir)/po_document/$$basename.mo" "locales/$$basename/LC_MESSAGES/texi2html_document.mo" ; \
-	  fi; \
-	done
+	$(MAKE) -C po_document localedir="$(abs_srcdir)/locales" install-data
+	$(MAKE) -C po_messages localedir="$(abs_srcdir)/locales" install-data
 
 makeinfo.pl texi2any.pl:
 	-$(LN_S) $(srcdir)/texi2html.pl $@
>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=64c20b05c861576e94a35a7232de2e3b8fe5c355'>root</a>/<a href='/guix/log/gnu?id=64c20b05c861576e94a35a7232de2e3b8fe5c355'>gnu</a>/<a href='/guix/log/gnu/installer?id=64c20b05c861576e94a35a7232de2e3b8fe5c355'>installer</a>/<a href='/guix/log/gnu/installer/steps.scm?id=64c20b05c861576e94a35a7232de2e3b8fe5c355'>steps.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/installer/steps.scm?id=64c20b05c861576e94a35a7232de2e3b8fe5c355&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-09-21 00:31:15 +0200'>2020-09-21</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=e1f3788944ee154ba9b33c891c4ccf039a1ff39a'>installer: Fix docstring typoes.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-03-05 23:40:22 +0100'>2020-03-05</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=63b8c089c1596cd3e814ac13e1a8b3fa45bb2b54'>installer: Implement a dialog on /var/guix/installer-socket.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-02-22 00:45:42 +0100'>2020-02-22</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=5c04b00cf463a543b8ffc9eb55991f6b4cc145dd'>installer: Log important bits to syslog.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-05-06 23:21:33 +0200'>2019-05-06</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=7ae9979cff98d7c23fc8d19e54ae733ee1a7deb2'>installer: Actually translate step descriptions.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-21 12:12:11 +0200'>2019-04-21</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=33023baac8ec548fe64ce8e4eb48840b5411ee4c'>installer: Fix skip-to-step issue.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2019-04-08 10:42:51 +0200'>2019-04-08</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=469e56b4afc7a6bfdc070faf162f9fed42eca1d5'>installer: Generate 'set-xorg-configuration' snippet.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-04-07 18:02:39 +0200'>2019-04-07</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=7d1030a63592aa2f94f6617786f22cfa83fb346f'>installer: Add dialog to select networking services.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-01-17 14:04:22 +0100'>2019-01-17</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=dc5f3275ecbddc804875899e9e457299a835d7ab'>installer: Add configuration formatter.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2019-01-17 14:04:20 +0100'>2019-01-17</span></td><td><a href='/guix/commit/gnu/installer/steps.scm?id=d0f3a672dcbdfefd3556b6a21985ff0e35eed3be'>gnu: Add graphical installer support.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>