Reverse chronological package installs in OS X

pkgutil --pkgs | xargs -n 1 pkgutil --pkg-info | gawk '{printf("%s%s",$0,(NR%5==0)?"\n":"\0")}' | sort -n -k 6 | tr "\0" "\n" | gawk '/install-time/ {print $0 " " strftime("(%c)",$2); next}{print}'