nixos/home/app/nixos.nix

{ pkgs
, lib
, config
, ... }: with lib; let
  cfg = config.users;
in {
  options.users.home.persistApp = {
    files = mkOption {
      type = with types; listOf (oneOf [ str (attrsOf str) ]);
      default = [ ];
    };
    directories = mkOption {
      type = with types; listOf (oneOf [ str (attrsOf str) ]);
      default = [ ];
    };
  };

  config = {
    users.profiles.app = {
      uid = 5800;
      description = "Insecure Applications";
      picture = ../picture/app.png;
    };

    # extra persistence specific to the app user
    environment.persistence."/nix/persist".users.app = cfg.home.persistApp;
  };
}