anchor.diff:  
         configureFlags = [
           "--with-config-file-scan-dir=/etc/php.d"
  +        "--with-pcre-regex=${pcre.dev} PCRE_LIBDIR=${pcre}"
         ] ++ lib.optional stdenv.isDarwin "--with-iconv=${libiconv}"
           ++ lib.optional stdenv.isLinux  "--with-fpm-systemd";
   
  
positive.code:       enableParallelBuilding = true;
  
        nativeBuildInputs = [ pkgconfig ];
        buildInputs = [ flex bison ]
          ++ lib.optional stdenv.isLinux systemd;
  
        CXXFLAGS = lib.optional stdenv.cc.isClang "-std=c++11";
  
negative.code:         curlWrappersSupport = (!php7) && (config.php.curlWrappers or true);
          gettextSupport = config.php.gettext or true;
          pcntlSupport = config.php.pcntl or true;
          postgresqlSupport = config.php.postgresql or true;
          pdo_pgsqlSupport = config.php.pdo_pgsql or true;
          readlineSupport = config.php.readline or true;
  