While I suppose you could directly call the zic binary residing in the src or pkg directories, I thought it would be cleaner to split the tzdata installation to a separate package, much like Arch Linux does. The book wants you to create symlinks for libncurses. I did this manually https://ambientador-coche-origina98753.pointblog.net/ambientador-coche-spray-una-visión-general-81559876