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by stevekemp 3941 days ago
Object code often has the date/time encoded in it, for example.

Debian is updating a lot of their compile/build scripts to make things 100% byte-for-byte identical and you can see that while there isn't a lot of work involved it's still going to take a while to hand-update many thousands of pacakges:

https://wiki.debian.org/ReproducibleBuilds