Extended support of SOURCE_DATE_EPOCH in TL2016 does a great job for
reproducibility . However, setting a tool-specific environment
variable as SOURCE_DATE_EPOCH_TEX_PRIMITIVES from dpkg-buildpackage is
I would suggest to set the default value of
SOURCE_DATE_EPOCH_TEX_PRIMITIVES to 1 instead of 0 in pdftex.
I think SOURCE_DATE_EPOCH is most often used to build reproducible
packages, and in this case the user always need
Also, SOURCE_DATE_EPOCH_TEX_PRIMITIVES=1 makes the dates in the
timestamps and in the document coherent.
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