Greetd's initial-session (i.e. auto-login) functionality requires runfiles
to be deleted on shutdown. Use a tmpfs to ensure said runfiles do not linger.
* gnu/services/base.scm (make-greetd-terminal-configuration-file): Add
“runfile” to configuration.
(%greetd-file-systems): Add a tmpfs for “/run/greetd/runfiles”.
Change-Id: I07319d5d8bdb1e18fb0074b67d5c9cb9fb49b04a
Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>