Re: reproducible tar archives

[Simon Josefsson]

Janneke Nieuwenhuizen <janneke@gnu.org> writes:

> Simon Josefsson via Gnulib discussion list writes:
>
>> We have code to make release tar archives reproducible:
>
> Nice!
>
> We finally had an effort this year to make the Guix source tarball 
> reproducible

This has been the main inspiration and reference for me, thank you!

> To get po to generate reproducible required hacking an xgettext script.
>
> https://git.savannah.gnu.org/cgit/guix.git/tree/build-aux/xgettext.scm?id=6c63c366776643e5831c50a2b7e29bad93273327

I'm using a dist-hook for the POT-Creation-Date problem in libidn:

https://git.savannah.gnu.org/gitweb/?p=libidn.git;a=blobdiff;f=Makefile.am;h=ba20ac175079f8c82d3c69ce5c3fbcaaf90c0a1e;hp=84d954b2209efe5cf9e2094c16ff9cc43a806940;hb=504caad385a7224f1c983308f2415d06f8449406;hpb=eb36b9801c9297e95da3e22044f976634ad10903

+dist-hook: pot-CreationDate-to-mtime-NEWS
+.PHONY: pot-CreationDate-to-mtime-NEWS
+pot-CreationDate-to-mtime-NEWS: mtime-NEWS-to-git-HEAD
+       $(AM_V_GEN)$(SED) -e 's,POT-Creation-Date: .*\\n",POT-Creation-Date: 
'"$$(env LC_ALL=C stat --format=%y $(srcdir)/NEWS | cut -c1-16,31-)"'\\n",' < 
$(distdir)/po/$(PACKAGE).pot > $@.tmp
+       $(AM_V_at)if cmp $@.tmp $(distdir)/po/$(PACKAGE).pot; then \
+               rm -f $@.tmp; else mv $@.tmp $(distdir)/po/$(PACKAGE).pot; fi
+       -$(AM_V_at)cmp $(srcdir)/po/$(PACKAGE).pot \
+                       $(distdir)/po/$(PACKAGE).pot || \
+               cp $(distdir)/po/$(PACKAGE).pot \
+                       $(srcdir)/po/$(PACKAGE).pot
+

It depends on my hack to set mtime of NEWS to last git commit.

This is not released, however.

/Simon

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