anchor.diff:  
         # Authentication: is the user who he claims to be?
         "authn_file" "authn_dbm" "authn_anon"
  -      (if versionOlder httpd.version "2.3" then "authn_alias" else "authn_core")
  +      (if version24 then "authn_core" else "authn_alias")
   
         # Authorization: is the user allowed access?
         "authz_user" "authz_groupfile" "authz_host"
  
positive.code:     ++ extraApacheModules;
  
  
    allDenied = if versionOlder httpd.version "2.4" then ''
      Order deny,allow
      Deny from all
    '' else ''
      Require all denied
    '';
  
    allGranted = if versionOlder httpd.version "2.4" then ''
      Order allow,deny
      Allow from all
    '' else ''
      Require all granted
    '';
  
  
  
negative.code: 
      ServerRoot ${httpd}
  
      ${optionalString version24 ''
        DefaultRuntimeDir ${mainCfg.stateDir}/runtime
      ''}
  
  