anchor.diff:        --disable-silent-rules
         --enable-reproducible
         --enable-unit-tests
  +      --enable-systemd
       )
     '';
   
  
positive.code:   nativeBuildInputs = [ pkgconfig ];
    buildInputs = [
      boost mysql57.connector-c postgresql lua openldap sqlite protobuf geoip
      libyamlcpp libsodium curl opendbx unixODBC openssl
    ];
  
    # nix destroy with-modules arguments, when using configureFlags
  
negative.code: { stdenv, fetchurl, pkgconfig
  , boost, libyamlcpp, libsodium, sqlite, protobuf, openssl, systemd
  , mysql57, postgresql, lua, openldap, geoip, curl, opendbx, unixODBC
  }:
  
  