alt Hacker NewsNix also needs the build output to be deterministic to calculate the hash. It also has the problems of timestamps etc. The build environment tries to be hermetic by setting the time to be epoch among other things.
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stabbles • today at 8:21 AM
Nix hashes the build inputs, for which deterministic builds are not required, only desirable.
SOURCE_DATE_EPOCH is not a Nix thing
https://reproducible-builds.org/docs/source-date-epoch/
(although Nix sets it as a default)