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:       ++ optional gettextSupport gettext
        ++ optional intlSupport icu
        ++ optional xslSupport libxslt
        ++ optional mcryptSupport libmcrypt'
        ++ optional bz2Support bzip2
        ++ optional sodiumSupport libsodium
        ++ optional tidySupport html-tidy
  
negative.code: , autoconf, automake, bison, file, flex, libtool, pkgconfig, re2c
  , libxml2, readline, zlib, curl, postgresql, gettext
  , openssl, pcre, pcre2, sqlite
  , libxslt, bzip2, icu, openldap, cyrus_sasl, unixODBC
  , uwimap, pam, gmp, apacheHttpd, libiconv, systemd, libsodium, html-tidy, libargon2
  , gd, freetype, libXpm, libjpeg, libpng, libwebp
  , libzip, valgrind, oniguruma, symlinkJoin, writeText
  