How do I suppress auth requests for PackageKit, just like in F12, or the NOPASSWD directive in sudo?

[memolus at googlemail.com]

You can put this file as "packagekit.pkla" into
"/var/lib/polkit-1/localauthority/50-local.d":

[PackageKit]
Identity=unix-group:admin
Action=org.freedesktop.packagekit.*
ResultAny=no
ResultInactive=no
ResultActive=yes

You may use unix-group:desktop_admin_r instead of unix-group:admin