ref: 01d9c59aa0f27db7bd3b9b8c1978c9a65c5e60a0 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 ;;