GasStrategy - ValueError: invalid literal for int() with base 10: '30 gwei'

[welshm]

Environment information

• brownie Version: 1.14.6
• ganache-cli Version: 6.12.2
• solc Version: x.x.x
• Python Version: 3.8.2
• OS: osx

What was wrong?

Running 'scripts/deployment_v2.py::main'...
Transaction sent: 0x56c5e5dd7826e1460f0ff79aa81f0fa30d3bd07e39c7a5c704faedc456bac0f1
  Gas price: 30.0 gwei   Gas limit: 1245447   Nonce: 6
Waiting for confirmation... Exception in thread Gas strategy 0x56c5e5dd7826e1460f0ff79aa81f0fa30d3bd07e39c7a5c704faedc456bac0f1:
Traceback (most recent call last):
  File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/mikewelsh/.local/pipx/venvs/eth-brownie/lib/python3.8/site-packages/brownie/network/gas/bases.py", line 65, in _loop
    gas_price = next(gas_iter)
  File "/Users/mikewelsh/.local/pipx/venvs/eth-brownie/lib/python3.8/site-packages/brownie/network/gas/strategies.py", line 77, in get_gas_price
    last_gas_price = min(int(last_gas_price * self.increment), self.max_gas_price)
ValueError: invalid literal for int() with base 10: '30 gwei'

I tried to deploy a contract to mainnet with with the following...

brownie run scripts/deployment_v2.py --network mainnet

deployment_v2.py

from brownie import MyContract, accounts, config, network
from brownie.network.gas.strategies import GasNowStrategy
from brownie.network.gas.strategies import GasNowScalingStrategy
from brownie.network.gas.strategies import LinearScalingStrategy
from brownie.network import gas_price

def main():
    gas_strategy = LinearScalingStrategy("30 gwei", "30 gwei", 1)
    gas_price(gas_strategy)
    acct = accounts.add(
        config["wallets"]["from_key"]
    )
    contract = MyContract.deploy(
        {"from": acct},
        )
    return contract

How can it be fixed?

I don't know how Brownie interprets gwei into int, but I suspect that's where it's failing. Happy to create a PR if you can point me to where the interpretation or type definition is for gwei