Comment # 4 on bug 1155687 from Thorsten Kukuk

(In reply to Andrei Borzenkov from comment #3)
> (In reply to Neil Rickert from comment #2)
> > Boot messages indicating missing users "sddm", "polkitd" and several others.
> 
> Bug is actually rather interesting. Following happens
> 
> 1. Live system has most users in its /etc/passwd.
> 2. Scripts used by various system-user-* packages basically do
> 
> getent user || useradd user

All packages creating users are doing this.

> 3. During installation /run from Live system is bind-mounted on target
> /mnt/run (where /mnt is root of system being installed). This makes nscd
> socket available to scripts run by rpm which are chrooted to /mnt.

Why do we run nscd in such a case? doesn't make any sense.

> 4. So during installation getent contacts nscd *in Live system*, and gets
> positive answer. As result, user creation is skipped.
> 
> Possible fixes are
> 
> 1. Do not use getent, parse /etc/passwd directly

This "fixes" only your very special use case and breaks all default
installations. Beside that this would mean touching all packages creating
users.