Upgrading the Interchain Stack

Our Cosmos layer depends on the "Interchain Stack" - a set of packages developed by the Cosmos community, must notable the CometBFT consensus engine, the Cosmos-SDK, and the ibc-go module. We maintain forks of some repositories, but many are used as-is, and we hope to reduce the number of forks we use over time.

Once a dependency is updated, we need to update agoric-sdk to use it. This involves several steps that we don't face in normal development, especially the maintenance of protocol buffer definitions and generated code.

• If there's a matching version of gaia, run upgradegaia.sh to pull in its changes.
• Update .go files to import new major version.
  • Don't edit generated files. Protobuf generated files will be udpated below.
• Update go.mod with new versions, if needed.
  • The go mod tidy below will automatically update dependencies which come from import paths.
  • But we need to manually edit some replace directives.
• Run go mod tidy
• Run go mod download
• Run make proto-update-deps
• Run make proto-gen
• Commit
• PR
  • add proto:expect-breakage tag if any protos are updated