function init_profile {
	zmodload zsh/datetime
	setopt promptsubst
	PS4='+$EPOCHREALTIME %N:%i> '
	# save file stderr to file descriptor 3 and redirect stderr (including trace 
	# output) to a file with the script's PID as an extension
	exec 3>&2 2>/tmp/startlog.$$
	# set options to turn on tracing and expansion of commands contained in the prompt
	setopt xtrace prompt_subst
}
source ~/.lib/shellenv.sh