case-app ArgParser for Option[MaybeConfigPasswordOption]
case-app ArgParser for Option[MaybeConfigPasswordOption]
Unlike a parser automatically derived through case-app ArgParser for Option[T], the
parser here accepts empty input (like in --password ""), and returns a None value in that
case.
Given a lower priority than the one for Option[MaybeConfigPasswordOption], as the latter
falls back to None when given an empty string (like in --password ""), while letting it be
automatically derived from this one (with the former parser and the generic ArgParser for
Option[T] from case-app) would fail on such empty input.