From Alexey on Discord:
Sponsored Transaction Precompile - not to include to London - is there a way to do it without precompile (these are ugly things and should not be regarded as normal artefacts of EVM development), also consider who exactly will need it and what are the alternatives.
We’ve switched off the precompile (now two opcodes.)
As for interested parties, we have several! @stonecoldpat (who has been active on this thread) is from Infura Transactions/any.sender. I’ve had a bit of contact with OpenZeppelin about this EIP as well, though no strong endorsement (yet!)
The alternatives are:
Natively Set msg.sender
- EIP-2711 - Sponsored, expiring and batch transactions
- EIP-2733 - Transaction Package
- EIP-2997 -
IMPERSONATECALLopcode
Avoid msg.sender Entirely