flake: { ... }@inputs: { group, ... }@imports: let
  group' = name: snippets: { pkgs, lib, options, config, ... }@args: let
    invoke = x: if builtins.isFunction x then x args else x;
  in {
    options.fbs42.group.${name} = lib.mkEnableOption name;
    config.users.groups.${name} = lib.mkIf
      (config.fbs42.group.${name} || builtins.any (usr: usr.group == name) (builtins.attrValues config.users.users))
      (lib.mkMerge (map invoke snippets));
  };
in builtins.mapAttrs group' group