Many Debian-based CI systems set the environment variable DEBIAN_FRONTEND to noninteractive so that the CI can just run the package manager without the user having to do anything. Since Fink shares a lineage with Debian's packaging system, it would be nice if it could support this environment variable, too, for consistency. Yes, there's the -y flag, but on Debian they also have the -y flag and still support the environment variable separately. Also, sometimes there are instances where one can edit the environment in which a prompt is run, but not the exact flags passed to it.