On Mon, May 2, 2016 at 2:27 PM, Alexis Bienvenüe
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