Release notes Kakarot 0.8.3

[tcoratger]

Introduction

This discussion provides information regarding release 0.8.3 for the Kakarot execution layer, along with release 0.6.19 for the Kakarot RPC and indexer layer. Below information is a summary of all major elements of the releases. For granular details about every change, you can consult the full release notes on Github:

• For Kakarot core contract: release v0.8.2 and release v0.8.3.
• For Kakarot RPC and indexer: release v0.6.18 and release v0.6.19.

Kakarot contract

Change	Reason	Pull request
Cairo precompiles	Adds a precompile at address 0x75001 allowing for calls to a Cairo contract from solidity code.	#1149
Modification of bytecode and nonce	In order to potentially fix issues with deployed contracts, we add an entrypoint to Kakarot in order to modify an account’s bytecode and nonce.	#1174
Pack EVM RLP encoded data into FieldElements	Up to PR #1178, each byte of the RLP encoded EVM transaction was send as a separate FieldElement in the Starknet transaction’s calldata. We now pack the EVM transaction into 31 bits, reducing the necessary Starknet transaction’s calldata by a factor of 31 and handling the unpacking in the Kakarot contract.	#1178
Transfer of ownership	Adds the ability to transfer the ownership of the Kakarot contract.	#1193
Force contract upgrade	Adds the ability for the owner of the Kakarot contract to upgrade a deployed contract to the latest account_contract_class_hash.	#1207

Kakarot-RPC

Change	Reason	Pull request
Index RunResources has not remaining steps error as a reverted transaction	In order to provide a correct feedback to users whenever a Starknet transaction runs out of resources, we now index reverted transaction. In case the revert reason is due to a RunResources has no remaining steps error, this transaction is indexed as a failed EVM transaction.	kkrt-labs/kakarot-rpc#1145
Move retry to calldata	A retry parameter used to be added to the max fee in order to bypass the DuplicateTx error by changing the Starknet transaction hash each time we submit a new retry to the Feeder gateway. This retry parameter is moved to the calldata as a value added to the Call's selector. This selector isn’t used in the EOA contract and as such can be modified.	kkrt-labs/kakarot-rpc#1151
Set max fee to 0.	The RPC now sends all Starknet transactions with a max fee of 0.	kkrt-labs/kakarot-rpc#1151
Add packing of RLP encoded EVM data into Starknet calldata	Kakarot now expects the RLP encoded EVM data to be packed into 31 bits chunks. This change is brought to the RPC when preparing the Starknet transaction.	kkrt-labs/kakarot-rpc#1174