[Altair] Syncing from checkpoint state doesn't work anymore

[mratsim]

Hey, I know this is still a experimental feature, but I noticed that after the prater Altair fork syncing from a checkpoint state doesn't work anymore and fails with file=nimbus_beacon_node.nim:124 err="Serialisation error while processing state.ssz"

I'm getting the states with

curl -H 'Accept: application/octet-stream' https://[email protected]/eth/v2/debug/beacon/states/finalized -o state.ssz

curl -H 'Accept: application/octet-stream' https://[email protected]/eth/v2/beacon/blocks/finalized -o block.ssz

https://discord.com/channels/613988663034118151/771033358363918347/883022453830459483

[NetherStar64]

Also syncing with a state from before the Altair fork works.

[viksesh]

Any word on when checkpoint sync will be available for Nimbus?

[TennisBowling]

This should be closed. Checkpoint sync has been merged in unstable
#3209 #3263

[zah]

Indeed, @TennisBowling, thanks for spotting this.