nixos/lib/users.nix

final: prev: {
  withConfig = config: let
    cfg = config.elss.users;
    mapAccount = f: login: prev.nameValuePair login (f login);
    mapList = f: lst: builtins.listToAttrs (map (mapAccount f) lst);
  in rec {
    mapUsers = f: mapList f cfg.users;
    mapAdmins = f: mapList f cfg.admins;
    mapAllUsers = f: (mapUsers f) // (mapAdmins f);
    mapAllUsersAndRoot = f:
      (mapAllUsers f)
      // {
        root = f "root";
      };
  };
}