anchor.diff:  with lib;
   
   let
  -  cfg = config.services.gitweb;
  -  package = pkgs.gitweb.override (optionalAttrs cfg.gitwebTheme {
  +  cfg = config.services.nginx.gitweb;
  +  gitwebConfig = config.services.gitweb;
  +  package = pkgs.gitweb.override (optionalAttrs gitwebConfig.gitwebTheme {
       gitwebTheme = true;
     });
   
  
positive.code:         FCGI_SOCKET_PATH = "/run/gitweb/gitweb.sock";
        };
        serviceConfig = {
          User = "nginx";
          Group = "nginx";
          RuntimeDirectory = [ "gitweb" ];
        };
        wantedBy = [ "multi-user.target" ];
      };
  
      services.nginx = {
        virtualHosts.default = {
          locations."/gitweb/static/" = {
            alias = "${package}/static/";
          };
          locations."/gitweb/" = {
            extraConfig = ''
              include ${pkgs.nginx}/conf/fastcgi_params;
              fastcgi_param GITWEB_CONFIG ${cfg.gitwebConfigFile};
              fastcgi_pass unix:/run/gitweb/gitweb.sock;
            '';
          };
  
negative.code:       default = false;
        type = types.bool;
        description = ''
          If true, enable gitweb in nginx.
        '';
      };
  
      location = mkOption {
        default = "/gitweb";
        type = types.str;
        description = ''
          Location to serve gitweb on.
        '';
      };
  
      user = mkOption {
        default = "nginx";
        type = types.str;
        description = ''
          Existing user that the CGI process will belong to. (Default almost surely will do.)
        '';
      };
  
      group = mkOption {
        default = "nginx";
        type = types.str;
        description = ''
          Group that the CGI process will belong to. (Set to <literal>config.services.gitolite.group</literal> if you are using gitolite.)
        '';
      };
  
      virtualHost = mkOption {
        default = "_";
        type = types.str;
        description = ''
          VirtualHost to serve gitweb on. Default is catch-all.
        '';
      };
  
    };
  
    config = mkIf cfg.enable {
  
      systemd.services.gitweb = {
        description = "GitWeb service";
  