Reference: Processor SDK Linux / Building the SDK / Build Options
So for my production build, I am targeting the minimal build: arago-base-tisdk-image. I need an SFTP server running, though, and as that is not included in the minimal build, I added it (and other needed but missing things) globally (to all targets) via my local.conf file:
IMAGE_INSTALL_append += " rsync zip ninja gpgme openssh"