Lintian tag information: unnecessary-source-date-epoch-assignment (type: information)

Description (from lintian-explain-tags)

There is an assignment to a SOURCE_DATE_EPOCH variable in the debian/rules
file.

As of dpkg 1.18.8, this is no longer necessary as dpkg exports this
variable if it is not already set. However, you can also include
/usr/share/dpkg/pkg-info.mk or /usr/share/dpkg/default.mk to ensure it is
exported.

Please refer to https://reproducible-builds.org/specs/source-date-epoch/
for details.

Visibility: info
Show-Always: no
Check: debian/rules

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