Should alloy::unpack be implicit?

[brunocodutra]

currently in order to use std::tuples and std::variants as Sources, one has to be explicit:

auto tup = std::make_tuple(1, '1', "one");

alloy::unpack(tup) >> sink; // equivalent to sink(1, '1', "one");

std::variant<int, char, std::string> var = "two"; 

alloy::unpack(var) >> sink; // equivalent to sink("two");

// or even
alloy::unpack(tup, var) >> sink; // equivalent to sink(1, '1', "one", "two");

should alloy::unpack be implicit instead?

auto tup = std::make_tuple(1, '1', "one");

tup >> sink; // equivalent to sink(1, '1', "one");

std::variant<int, char, std::string> var = "two"; 

var >> sink; // equivalent to sink("two");

alloy::join(tup, var) >> sink; // equivalent to sink(1, '1', "one", "two");