[question] How to build abstreet without downoading additional files during the build?

When the application is built from the port it starts like this:
and exits.

The instructions say:
> Grab the minimal amount of data to get started: cargo run --bin updater -- download --minimal.

Can this data be packaged into a separate tarball so that there would be no need to run the "cargo" command?

The package builder can't run commands that download anything.

What if the user isn't even interested in Seattle? Why doesn't the application simply offer to download any city data instead of just exiting?

How to build/install abstreet without additional downloads during build, and such that it is functional when installed?