brownie defaults to compiling with istanbul for vyper

[mhorsley30896]

Environment information

• brownie Version: 1.19.1
• vyper Version: 0.3.6

What was wrong?

brownie defaults to compiling with evm_version = "istanbul" for vyper

brownie/brownie/project/compiler/__init__.py

Line 183 in 73bb8c0

evm_version = "istanbul"

this version is now behind the one used by default for the vyper compiler

this causes brownie compile and vyper compilation bytecode to be different, causing issues with source code verification

How can it be fixed?

Instead of hardcoding the evm_version read the version used by the installed vyper version

[dejanko25]

Hey, this sounds interesting.
I will look into this further.

[chanhosuh]

Vyper's default currently is "paris". I don't believe brownie or ganache supports that. I found this works fine in my case (set in brownie config):

compiler:
  evm_version: berlin

[magnetto90]

What about solidity? It should also be able to select paris.