The problem at hand is that sem@ explicitly disables acpid
within installer-distro-simply-linux; early shots at
ALT Education 9.0 for Elbrus suffered from this as e2k's
power button handling differs slightly regarding events
generated so we *do* need acpid{,-events-e2k} to poweroff
on power button press.

Hope this doesn't introduce regressions or woes for anyone.