[LightDM] lightdm support for specifying list of users to be SHOWN in greeter?

[robert.devanna at nospammail.net]

Hi,

I'm upgrading to KDE 'Next Gen' (plasma5 + KF5* + etc ).

With this change, the default greeter switches from KDM to SDDM; tho, KDM still works -- for now.

KDM's had the option -- for ages -- to specify a list of non-continugous-UID users to show in the greeter.

So, e.g.

  ShowUsers=0,1000,1001

or

  ShowUsers=1000,1006

Afaict, lightdm's and sddm's greeters only provide an option to specify a list of users to HIDE.

I raised the issue @ #sddm of whether the ShowUsers= option exists, or could be added.  Ended up with a debate as to why the option to specify users is needed, and that it's not really the users choice ...  No thanks to that.

In #kde I was told that lightdm is a more flexible option, works with KDE, but was speculated that it does not -- in the currently available greeters -- have the ShowUsers= option.

DOES lightdm currently have the capability?

If not, is the limitation in the current greeters? Or in the underlying libraries?

Could this feature just be added, and made available to all the greeters?


Thanks,

Rob