Vitalik Buterin: Vyper Tool Rewrites Contracts

Vitalik Buterin spotlighted the vyupgrade tool from banteg that automatically rewrites legacy Vyper contracts into modern syntax up to version 0.4.3, checks compilation across versions, and diffs ABI, method IDs plus storage layout for safety.

The utility handles dependencies such as snekmate and flags risky rewrites requiring manual review, allowing developers to run it via uvx on entire contract folders.

Price action on the 4h ETH chart shows a bearish structure with price at $2022.54 sitting below EMA50 resistance at $2072.38 and EMA200 at $2186.21; despite MACD golden cross at -21.28, the neutral RSI at 43.54 and position inside Bollinger Bands point to a probable retracement toward lower band support at $1959.94 before any sustained move higher.