{ config, pkgs, ... }:

{
  services.postgresql = {
    enable = true;
    ensureDatabases = [ "mydatabase" ];
   
    identMap = ''
      # ArbitraryMapName systemUser DBUser
         superuser_map      root      postgres
         superuser_map      postgres  postgres
         # Let other names login as themselves
         superuser_map      /^(.*)$   \1
    '';
    authentication = pkgs.lib.mkOverride 10 ''
      #type database  DBuser  auth-method optional_ident_map
      local sameuser  all     peer        map=superuser_map
    '';
  };
};