On Mon, May 2, 2016 at 2:27 PM, Alexis Bienvenüe <pado@passoire.fr> wrote:

Hello.

Working on the “reproducible builds” effort [1], we have noted that a
lot of software packages use pdftex/xetex/luatex to build some documents
to be included in the binary package. These builds enclose timestamps in
the documents, preventing reproducible build. The SOURCE_DATE_EPOCH
specification defines an environment variable that is set during
software package building and can be used to replace time() calls (or
equivalent) for build timestamps.

I would like to promote the SOURCE_DATE_EPOCH support for luatex, which
would need two patches in the engine code:

Thank you very much for the patches.

The source code now is almost frozen, so it's unlikely (but not impossible) that we can apply the patches

proposed. But for sure we will consider them for the next release of luatex.

luigi