[bug#70169] [PATCH v3 13/13] maint: Ensure generated file reproducibility for dist.

[Janneke Nieuwenhuizen <janneke@gnu.org>]

pelzflorian (Florian Pelz) writes:

Hello Florian,

> Janneke Nieuwenhuizen <janneke@gnu.org> writes:
>> +auto-clean: maintainer-clean-vti doc-clean
>> +	rm -f ABOUT-NLS INSTALL
>> +	rm -f aclocal.m4 configure libtool Makefile.in
>> +	git clean -fdx -- '.am*' build-aux m4 po
>
> Could you enclose the call to git in
> “if test -e .git; then … fi” as well?

I've changed it to

	if test -e .git; then				\
	    git clean -fdx -- '.am*' build-aux m4 po;	\
	else						\
	    rm -rf .am*;				\
	    $(MAKE) -C po/guix maintainer-clean;	\
	    $(MAKE) -C po/packages maintainer-clean;	\
	fi

> I’ve switched to wip-tarball, but the hash is different.
> It is still quite similar.

> florian@floriandesktop ~/src/guix [env]$ diffoscope
> guix-1.3.0.57741-0e3053.tar.gz /tmp/guix-1.3.0.57741-0e3053.tar.gz
> --- guix-1.3.0.57741-0e3053.tar.gz
> +++ /tmp/guix-1.3.0.57741-0e3053.tar.gz
> ├── guix-1.3.0.57741-0e3053.tar
> │ ├── file list
[..]
> │ │ @@ -215,25 +215,25 @@

> │ │ --rw-r--r-- 0 0 0 123 2024-04-08 18:08:07.000000 guix-1.3.0.57741-0e3053/doc/stamp-2
> │ │ --rw-r--r-- 0 0 0 123 2024-04-08 18:08:07.000000 guix-1.3.0.57741-0e3053/doc/stamp-3
> │ │ +-rw-r--r-- 0 0 0 125 2024-04-08 18:08:07.000000 guix-1.3.0.57741-0e3053/doc/stamp-2
> │ │ +-rw-r--r-- 0 0 0 125 2024-04-08 18:08:07.000000 guix-1.3.0.57741-0e3053/doc/stamp-3
[..]

> guix-1.3.0.57741-0e3053/etc/completion/bash/guix
> │ ├── guix-1.3.0.57741-0e3053/doc/stamp-2
> │ │ @@ -1,4 +1,4 @@
> │ │ -@set UPDATED 29 Februar 2024
> │ │ -@set UPDATED-MONTH Februar 2024
> │ │ +@set UPDATED 29 February 2024
> │ │ +@set UPDATED-MONTH February 2024
> │ │  @set EDITION .3.0.57741-0e3053
> │ │  @set VERSION .3.0.57741-0e3053

[..]

> I have used an de_DE locale where February is Februar.

Wow, that's amazing news, and thanks for testing!  (I could have said:
well, using de_DE is /asking/ for such differences ;)

I tested with

    export LANG=de_DE LANGUAGE=fr_FR LC_TIME=pt_BR

and found similar errors, and only those.  In this case LC_TIME
prevailed.  So I made this change

--8<---------------cut here---------------start------------->8---
@@ -264,8 +264,8 @@ endif
 # Git rather than using metadata from the filesystem.
 define version.texi-from-git
 $(srcdir)/doc/stamp-$(1): $(srcdir)/$(2) $(top_srcdir)/configure
-	$$(AM_V_GEN)set -e						\
-	export LC_ALL=C;						\
+	$$(AM_V_GEN)set -e;						\
+	export LANG=C LANGUAGE=C LC_ALL=C LC_TIME=C; 			\
 	export TZ=UTC0;							\
 	timestamp="$$$$(git log --pretty=format:%ct -n1 -- "$$<"	\
 		2>/dev/null						\
--8<---------------cut here---------------end--------------->8---

and checked against a clean/LC_ALL=C locale.

Not sure if I should send a V4 for this?  Let's see if there are more
comments.

Greetings,
Janneke

-- 
Janneke Nieuwenhuizen <janneke@gnu.org>  | GNU LilyPond https://LilyPond.org
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