Just adding to this since the point might be lost for people new to nix:

You can assign a value to `services.restic.backups.my_repo.paths = [ ... ]` in multiple places throughout your system configuration. When applying the config, all the values will be merged into a single list.

This is important because other standard tasks besides backup (e.g. firewall, monitoring, ...) also require per-service configuration. If every one of these tasks had only a single place where you needed to put a megalist of services (which is basically how `/etc` works on typical Linux distros!), this would quickly scatter the configuration that pertains to FreshRSS over N different files, making it hard to track where everything lives.