nixos/hedgedoc: fix configureNginx, set path per default, adjust nginx group

  };

  config = lib.mkIf cfg.enable {

    users.groups.${name} = { };

    users.users.${name} = {

    users = {

      groups.${name} = { };

      users = {

        nginx = lib.mkIf cfg.configureNginx {

          extraGroups = [ "hedgedoc" ];

        };

        ${name} = {

          description = "HedgeDoc service user";

          group = name;

          isSystemUser = true;

        };

      };

    };

    services = {

      hedgedoc.settings = {

        defaultNotePath = lib.mkDefault "${cfg.package}/share/hedgedoc/public/default.md";

        docsPath = lib.mkDefault "${cfg.package}/share/hedgedoc/public/docs";

        path = lib.mkIf cfg.configureNginx "/run/hedgedoc/hedgedoc.sock";

        viewPath = lib.mkDefault "${cfg.package}/share/hedgedoc/public/views";

      };

      nginx = lib.mkIf cfg.configureNginx {

        enable = true;

        upstreams.hedgedoc.servers."unix:${config.services.hedgedoc.settings.path}" = { };

        upstreams.hedgedoc.servers."unix:${cfg.settings.path}" = { };

        virtualHosts."${cfg.settings.domain}" = {

          enableACME = true;

          forceSSL = true;

          locations = {

            "/" = {

              proxyPass = "http://hedgedoc";

              recommendedProxySettings = true;

              recommendedProxySettings = lib.mkDefault true;

            };

            "/socket.io/" = {

              proxyPass = "http://hedgedoc";

              proxyWebsockets = true;

              recommendedProxySettings = true;

              recommendedProxySettings = lib.mkDefault true;

            };

          };

        };