golang-github-peterbourgon-ff-dev - 3.4.0-2 main

The basic idea is that myprogram -h should always show the complete
configuration "surface area" of a program. Therefore, every config parameter
should be defined as a flag. This module provides a simple and robust way to
define those flags, and to parse them from command-line arguments, environment
variables, and/or config files.
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Building a command-line application in the style of kubectl or docker?
ff.Command offers a declarative approach that may be simpler to write, and
easier to maintain, than many common alternatives.