nixos-config/nixos/profiles/services/caddy/default.nix

{
  config,
  pkgs,
  mylib,
  ...
}:
{
  services.caddy = {
    enable = true;
    enableReload = true;
    package = pkgs.caddy.withPlugins {
      plugins = [ "github.com/mholt/caddy-l4@3c6cc2c0ee0875899fde271fbdef95be3fef7a92" ];
      hash = "sha256-s5LzVOAvVsZxbhdgIdpe1OBSHIAc/tCi+1pEofeQx6k=";
    };
  };

  systemd.services.caddy.serviceConfig = mylib.misc.serviceHardened // {
    AmbientCapabilities = [
      ""
      "CAP_NET_BIND_SERVICE"
    ];
    CapabilityBoundingSet = [
      ""
      "CAP_NET_BIND_SERVICE"
    ];
  };

  services.restic.backups.b2.paths = [ config.services.caddy.dataDir ];

  services.caddy.globalConfig = ''
    admin 127.0.0.1:${toString config.networking.ports.caddy-admin}

    servers {
      metrics
    }
  '';
}