A Jan. 8 post published by the Ethereum Foundation (EF) revealed that developers are working on a new implementation of the Vyper compiler, due to “multiple serious bugs” in the existing version. The Vyperlang team responded by noting that existing Vyper smart contracts were not affected by these bugs.
Vyper is an alternative programming language for Ethereum originally conceived by Vitalik Buterin. It focuses on being as human-readable as possible, even at the cost of missing some of the more advanced features found in Solidity, the primary language.