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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Gem::Specification#date

date

The date this gem was created.

If SOURCE_DATE_EPOCH is set as an environment variable, use that to support reproducible builds; otherwise, default to the current UTC date.

Details on SOURCE_DATE_EPOCH: reproducible-builds.org/specs/source-date-epoch/

See also #date= #conflicts #cache_file #default_value also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0