bug#29211: XScreenSaver does not recognise password

[Diego Nicola Barbato]

Hello Guix,

When I lock my screen with XScreenSaver by first running
`xscreensaver &' and then `xscreensaver-command --lock' I am unable to
unlock the screen by entering my password.  This happens even though I
have added `(screen-locker-service xscreensaver "xscreensaver")' to my
services in my `config.scm'.
I run StumpWM on GuixSD.

Greetings,

Diego

P.S. I am not sure whether this is relevant but this bug seems to
coincide with a change in the time displayed on the unlock dialog:  It
no longer displays the wrong time (two hours behind the output of
`date') and the format has changed from a 24h format to one using AM and
PM.