anchor.diff:    , curlSupport ? config.php.curl or true
     , gettextSupport ? config.php.gettext or true
     , pcntlSupport ? config.php.pcntl or true
  +  , pdo_odbcSupport ? config.php.pdo_odbc or true
     , postgresqlSupport ? config.php.postgresql or true
     , pdo_pgsqlSupport ? config.php.pdo_pgsql or true
     , readlineSupport ? config.php.readline or true
  
positive.code:       ++ optional readlineSupport "--with-readline=${readline.dev}"
        ++ optional sqliteSupport "--with-pdo-sqlite=${sqlite.dev}"
        ++ optional postgresqlSupport "--with-pgsql=${postgresql}"
        ++ optional pdo_pgsqlSupport "--with-pdo-pgsql=${postgresql}"
        ++ optional pdo_mysqlSupport "--with-pdo-mysql=${if mysqlndSupport then "mysqlnd" else mysql.connector-c}"
        ++ optionals mysqliSupport [
  
negative.code: { lib, stdenv, fetchurl, flex, bison, autoconf
  , mysql, libxml2, readline, zlib, curl, postgresql, gettext
  , openssl, pcre, pcre2, pkgconfig, sqlite, config, libjpeg, libpng, freetype
  , libxslt, libmcrypt, bzip2, icu, openldap, cyrus_sasl, libmhash, unixODBC
  , uwimap, pam, gmp, apacheHttpd, libiconv, systemd, libsodium, html-tidy, libargon2, libzip
  }:
  
  