Uniswap v3 support

[ErikBjare]

Uniswap V3 launches tomorrow (May 5th).

Whitepaper: https://uniswap.org/whitepaper-v3.pdf

Contracts

The new router contract is SwapRouter.sol:

• Impl: https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/SwapRouter.sol
• Interface: https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/interfaces/ISwapRouter.sol

The new way to quote prices is with Quoter.sol.

• Impl: https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/Quoter.sol
• Interface: https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/interfaces/IQuoter.sol

Feature parity

• Get price
  • Single pair
  • Multihop route (feat: started working on multihop swaps for v3 #221)
• Make trade
  • Single pair
  • Multihop route (feat: started working on multihop swaps for v3 #221)
• Liquidity provision
  • Create position
  • Close position
  • Query underlying tokens amounts (Fetching live liquidity positions #116)
  • Create pool

Funding

We are in the process of applying for a Uniswap grant to implement support for Uniswap V3. We have received a grant from the Uniswap Grants Program to implement support for V3. If you want to help contribute to V3 and beyond, get in touch!

[ErikBjare]

V3 is live! Contract addresses: https://github.com/Uniswap/uniswap-v3-periphery/blob/main/deploys.md

I'll get started on it tomorrow.

[AlexanderFreihaut]

Any one knows, when v3 support comes?

[ErikBjare]

@AlexanderFreihaut V3 support is being worked on in #106, but there are a few blockers that I need to get through.

[ErikBjare]

Tests for V3 are now passing on master! https://github.com/shanefontaine/uniswap-python/runs/2601585038

V1 and V2 tests still have a few failures though, so we might wait with a new release until at least the V2 tests are passing as well.

[ErikBjare]

@alexskliu Answered in #116

[rmurray2]

Any idea when Creating/Closing liquidity positions on v3 will be implemented? Very much looking forward to that!

[romanbsd]

@rmurray2 I'm working on that, although the code is not based upon uniswap-python, but rather tries to follow the official uniswap-v3-sdk (javascript). If anyone is interested to participate in this project, I'll be more than happy. Creating/Closing position is almost ready.

[antb123]

Is there plans to support uniswap v3 and optimism L2?