anchor.diff:        ++ optional intlSupport "--enable-intl"
         ++ optional exifSupport "--enable-exif"
         ++ optional xslSupport "--with-xsl=${libxslt.dev}"
  -      ++ optional mcryptSupport "--with-mcrypt=${libmcrypt'}"
         ++ optional bz2Support "--with-bz2=${bzip2.dev}"
         ++ optional (zipSupport && (versionOlder version "7.4")) "--enable-zip"
         ++ optional (zipSupport && (versionAtLeast version "7.4")) "--with-zip"
  
positive.code:   , withSystemd ? config.php.systemd or stdenv.isLinux
    , imapSupport ? config.php.imap or (!stdenv.isDarwin)
    , ldapSupport ? config.php.ldap or true
    , mhashSupport ? config.php.mhash or false
    , mysqlndSupport ? config.php.mysqlnd or true
    , mysqliSupport ? (config.php.mysqli or true) && (mysqlndSupport)
    , pdo_mysqlSupport ? (config.php.pdo_mysql or true) && (mysqlndSupport)
  
negative.code:   , intlSupport ? config.php.intl or true
    , exifSupport ? config.php.exif or true
    , xslSupport ? config.php.xsl or false
    , bz2Support ? config.php.bz2 or false
    , zipSupport ? config.php.zip or true
    , ftpSupport ? config.php.ftp or true
  