[Bug] Can't use brownie console with anvil to deploy contracts

Environment information

• brownie Version: 1.19.0
• solc Version: 0.8.10
• Python Version: 3.9.7
• OS: osx

What was wrong?

Please include information like: Can’t deploy contracts using the accounts object with anvil as I get a “to” key error

• what command you ran The command I ran was

brownie console --network anvil

The error in the console and the code that lead to it.

>>> from brownie import *
>>> accounts[0].deploy(MockCurveOracle)
Transaction sent: 0xedbbeef98ae3fcad52be3bd2244d62c6cfba48ada5c39b18b365453bdf1d6a09
  File "<console>", line 1, in <module>
  File "brownie/network/account.py", line 510, in deploy
    receipt, exc = self._make_transaction(
  File "brownie/network/account.py", line 759, in _make_transaction
    receipt = TransactionReceipt(
  File "brownie/network/transaction.py", line 199, in __init__
    self._set_from_tx(tx)
  File "brownie/network/transaction.py", line 549, in _set_from_tx
    self.receiver = EthAddress(tx["to"]) if tx["to"] else None
  File "web3/datastructures.py", line 51, in __getitem__
    return self.__dict__[key]  # type: ignore
KeyError: 'to'

[WyseNynja]

I’m pretty sure there’s no “detection” of the underlying rpc. It just assumes it’s ganache if it’s connecting to an already running rpc because that’s all that used to exist. Adding something to check the client would be a good idea.

[WyseNynja]

For the first one, I’m guessing anvil doesn’t return anything for “to” when it’s ZERO_ADDRESS. That should be easy to handle in brownie, but at first glance it seems like an anvil bug.

For your second error, anvil is strict about wanting hex encoded integers for seemingly everything. For the “chain.sleep” and similar chain commands I do this encoding for the user. Maybe we need a middleware to make it automatic for more commands. Or maybe anvil could be less strict in its parsing.