feat: Pectra

[ryanschneider]

This is a replacement for #32 that actually works end-to-end!

The only remaining oddity is that on macOS the lighthouse-v7.0.0-beta.0 binary (which is always x86_64, they dropped their -portable builds) behaves odd: rbuilder never seems to "see" the payload events even though curling the endpoint seems to work as expected. As a work-around for now, I detect this scenario and emit a warning suggesting using --use-bin-path instead.

Anyways, otherwise it "just works":

> go run main.go --electra --use-reth-for-validation --use-bin-path

...

Starting reth version v1.2.0
Starting lighthouse version v7.0.0
Services started:
==================
- reth (authrpc: 8551, http: 8545, rpc: 30303)
- beacon_node (http: 3500)
- validator ()
- mev-boost-relay (http: 5555)
- cl-proxy (jsonrpc: 5656)

All services started, press Ctrl+C to stop

Start rbuilder, then send a juicy tx that pays the coinbase.

> ETH_RPC_URL=http://localhost:8645/ cast rpc eth_sendRawTransaction $(cast mktx --private-key 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 --value 9ether )

And sure enough, we have a pectra block in the builder-playground output!

All services started, press Ctrl+C to stop
Block Proposed: Slot: 4, Builder: 0xa1885d66bef164889a2e35845c3b626545d7b0e513efe335e97c3a45e534013fa3bc38c3b7e6143695aecc4872ac52c4, Block: 4

If you want to go further, I've also included a config file for assertoor which can be used to spam the chain with deposit requests:

> cd assertoor/config
> docker run -v $(pwd):/config -p 8080:8080 -it ethpandaops/assertoor:latest --config=/config/playground_deposits.yaml

...

This tests the new execution_requests field in the pectra fork. Tooling on this field is a little mixed, currently the easiest way to see if a block contained requests is to use cast block

Block Proposed: Slot: 14, Builder: 0xa1885d66bef164889a2e35845c3b626545d7b0e513efe335e97c3a45e534013fa3bc38c3b7e6143695aecc4872ac52c4, Block: 14

> cast block 14 --field requestsHash
Warning: This is a nightly build of Foundry. It is recommended to use the latest stable version. Visit https://book.getfoundry.sh/announcements for more information.
To mute this warning set `FOUNDRY_DISABLE_NIGHTLY_WARNING` in your environment.

0x0d27f338894e24f0788dc206fba6ed357e3210a09f488131dc68054e2da3493c

The "empty" hash for requests is 0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 so the fact that they differ implies that requests we included.