refactor: migrate to cosmos/gogoproto

[julienrbrt]

The SDK is moving away from gogo/protobuf to use our fork cosmos/gogoproto. This fork is based on Regen's fork, which we have been using for sometimes (https://github.com/cosmos/cosmos-sdk/blob/main/go.mod#L301).

Currently, we are blocked because we are importing TM types (cosmos/cosmos-sdk#13070 (comment)) and I think it would be a win for both to switch to cosmos/gogoproto as gogo/protobuf is currently not maintained anymore.

---

PR checklist

• Tests written/updated, or no tests needed
• CHANGELOG_PENDING.md updated, or no changelog entry needed
• Updated relevant documentation (docs/) and code comments, or no
  documentation updates needed

[thanethomson]

Who's going to be committing to maintaining this fork over time?

Also, what differences are there between the fork and https://github.com/gogo/protobuf?

[tychoish]

Who's going to be committing to maintaining this fork over time?

Also, what differences are there between the fork and https://github.com/gogo/protobuf?

I believe that the SDK team will be maintaining it. It is the case that gogo/protobuf is not presently maintained, so it's probably best that we move to something. The tendermint core team has long been of the opinion that Tendermint should move to using the upstream/default protobuf generation rather than any fork, but all other things being equal, the cosmos protobuf generator is probably better than gogo proto, though I'd still prefer to use stock prototobuf.

[thanethomson]

Cool, thanks for this @julienrbrt 👍 I see some minor conflicts have come up here, but otherwise this should be good to merge.

[julienrbrt]

Who's going to be committing to maintaining this fork over time?
Also, what differences are there between the fork and https://github.com/gogo/protobuf?

I believe that the SDK team will be maintaining it. It is the case that gogo/protobuf is not presently maintained, so it's probably best that we move to something. The tendermint core team has long been of the opinion that Tendermint should move to using the upstream/default protobuf generation rather than any fork, but all other things being equal, the cosmos protobuf generator is probably better than gogo proto, though I'd still prefer to use stock prototobuf.

Right, the fork adds as well castrepeated support (gogo/protobuf#658).

[tac0turtle]

if this is merged in a short period could we include it in 0.37?

[thanethomson]

Seems reasonable to me. Thanks @julienrbrt!

[tac0turtle]

thank you!!