ref: 66a472dc689c3a7b2b8f077fdf01c0dc2fdc1f7d dir: /lib/iter/bld.sub/
lib iter = chunk.myr enum.myr perm.myr ref.myr reverse.myr zip.myr lib ../sys:sys lib ../std:std ;; testdeps = ../testr:testr ../sys:sys ../std:std ;;