anchor.diff:    nativeBuildInputs = [ pkgconfig ];
     buildInputs = [
       boost mysql57.connector-c postgresql lua openldap sqlite protobuf geoip
  -    libyamlcpp libsodium curl opendbx unixODBC botan2 openssl
  +    libyamlcpp libsodium curl opendbx unixODBC openssl
     ];
   
     # nix destroy with-modules arguments, when using configureFlags
  
positive.code:       --with-sqlite3
        --with-socketdir=/var/lib/powerdns
        --with-libcrypto=${openssl.dev}
        --enable-libsodium
        --enable-botan
        --enable-tools
        --disable-dependency-tracking
        --disable-silent-rules
  
negative.code: { stdenv, fetchurl, pkgconfig
  , boost, libyamlcpp, libsodium, sqlite, protobuf, openssl
  , mysql57, postgresql, lua, openldap, geoip, curl, opendbx, unixODBC
  }:
  
  