YaST Users is being partially rewritten to rely on the tools of the shadow
packages (useradd & friends) as much as possible.

One option that YaST currently offers is to create a new user with an empty
home (that is, not copying the skel user to it). Currently useradd copies file
from the directory specified by the SKEL configuration variable and also from
the location indicated by USRSKEL. And there is no way to fully avoid that.

One may think that running this is the way to specify you want an empty home:

>  useradd --skel /var/lib/empty username

But that still copies the files from the location of USRSKEL. And there is no
argument to influence the value of usrskel.

Not sure what the correct solution is:

1) maybe ignoring USRSKEL as well if "--skel /var/lib/empty" (or /dev/null or
similar) was provided

2) maybe offering another parameter similar to "--skel" but to override
USRSKEL.