adduser or useradd (package passwd)?

["C. Gatzemeier" <c.gatzemeier@tu-bs.de>]

Am Wed, 26 May 2010 08:40:26 +0100
schrieb Stephen Gran:

> first useful argument I've heard for changing adduser's
> behavior.  Interoperability with other software is a useful goal,

Would the change have to go into adduser or useradd (part of
base-passwd)?

9.2.1: "Packages other than base-passwd must not
modify /etc/passwd, /etc/shadow, /etc/group  or /etc/gshadow."