generated at
EVM

Stack too deep
>It will be possible eventually, but I don't think we need to keep this issue open. You could also do things like:
>
> bytes memory a = abi.encodePacked(1,2,3,4,5,6,7);
> bytes memory b = abi.encodePacked(8,9,10,11,12,13,14,15);
> `keccak256(abi.encodePacked(a, b));

EIP663