If requested in setup.cfg, DebianPts:python-setuptools is appending the build date to the version number ([[https://sources.debian.net/src/python-setuptools/5.5.1-1/setuptools/command/egg_info.py/?hl=178#L181|source]])

[[https://reproducible.debian.net/issues/timestamps_in_python_version_numbers_issue.html|Known affected packages]]

= Detection =
Inside the source the file setup.cfg contains {{{tag_date = True}}}.

Inside the binary package the egg-info directory contains a date timestamp (YYYYMMDD).

[[attachment:trac-subtickets_0.1.1+253f019-1.debbindiff.html|Example debbindiff output]]

= Solution =
Set {{{tag_date}}} to {{{False}}}.