Migrate to Cosmos EVM and XRPLEVM v9 by JordiParraCrespo · Pull Request #5 · xrplevm/callisto

JordiParraCrespo · 2026-02-11T16:02:39Z

Description

This update migrates callisto from xrplevm/node/v6 to xrplevm/node/v9. The core change in the xrplevm ecosystem is the move from the evmos EVM stack (github.com/evmos/evmos/v20) to the new modular cosmos/evm library (github.com/cosmos/evm), along with a Cosmos SDK bump from v0.50.x to v0.53.x.

Main changes

Go Version

Before	After
`go 1.22.7` + `toolchain go1.22.9`	`go 1.23.8` (no toolchain directive)

Direct Dependencies

Old	New
`github.com/xrplevm/node/v6 v6.0.0`	`github.com/xrplevm/node/v9 v9.0.0`
`github.com/evmos/evmos/v20 v20.0.0`	`github.com/cosmos/evm v0.4.0`
`github.com/cosmos/cosmos-sdk v0.50.11`	`github.com/cosmos/cosmos-sdk v0.53.4`
`github.com/cometbft/cometbft v0.38.15`	`github.com/cometbft/cometbft v0.38.21`
`cosmossdk.io/math v1.4.0`	`cosmossdk.io/math v1.5.3`
`cosmossdk.io/store v1.1.1`	`cosmossdk.io/store v1.1.2`
`cosmossdk.io/log v1.4.1`	`cosmossdk.io/log v1.6.1`

Replace Directives

Old	New
`cosmossdk.io/core => cosmossdk.io/core v0.11.0`	`cosmossdk.io/core => cosmossdk.io/core v0.11.3`
`cosmossdk.io/store => github.com/evmos/cosmos-sdk/store v0.0.0-...`	`github.com/cosmos/cosmos-sdk/store => cosmossdk.io/store v1.1.2`
`github.com/cosmos/cosmos-sdk => github.com/evmos/cosmos-sdk v0.50.9-evmos`	`github.com/cosmos/cosmos-sdk => github.com/xrplevm/cosmos-sdk v0.53.4-xrplevm.2`
`github.com/ethereum/go-ethereum => github.com/evmos/go-ethereum v1.10.26-evmos-rc4`	`github.com/ethereum/go-ethereum => github.com/cosmos/go-ethereum v0.0.0-20250806193535-2fc7571efa91`
`github.com/evmos/evmos/v20 => github.com/xrplevm/evmos/v20 v20.0.0-exrp.4`	`github.com/cosmos/evm => github.com/xrplevm/evm v0.4.2-xrplevm.2`

Copilot

Pull request overview

This PR migrates Callisto to the XRPL EVM v9 stack by moving from the Evmos-based EVM integration to github.com/cosmos/evm and upgrading core Cosmos SDK dependencies, while also updating local dev tooling and configuration to support the new EVM requirements.

Changes:

Upgrade core dependencies (XRPL EVM node v9, Cosmos SDK v0.53, CometBFT) and switch EVM integration from Evmos to cosmos/evm.
Introduce an EVM chain_id config loader and wire it into codec initialization.
Update local development setup (docker/hasura settings, Makefile targets) and add ready-to-use mainnet/testnet configs.

Reviewed changes

Copilot reviewed 12 out of 16 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
utils/codec.go	Switches codec/module registration to `cosmos/evm` and initializes encoding config with configured EVM ChainID.
types/evm_config/evm_config.go	Adds EVM config parsing/loading for `evm.chain_id` from `config.yaml`.
types/evm_config/evm_config_test.go	Adds unit tests for the new EVM config loader/parser.
cmd/callisto/main.go	Loads EVM config at startup and sets the global ChainID used by codec initialization.
go.mod	Bumps Go/Cosmos dependencies and updates replace directives for the new EVM stack and forks.
modules/gov/utils_events_test.go	Updates expectations to match updated vote-option parsing output type.
configs/mainnet-config.yaml	Adds a preconfigured mainnet config including `evm.chain_id`.
configs/testnet-config.yaml	Adds a preconfigured testnet config including `evm.chain_id`.
docker-compose.yml	Makes Hasura image arch-selectable via env and updates actions base URL to `host.docker.internal`.
hasura/config.yaml	Updates actions handler base URL to `host.docker.internal`.
Makefile	Adds dev convenience targets (start/start-clean, schema management, env setup).
README.md	Major rewrite with quickstart, make targets, and service/docs layout.
.gitignore	Ignores `.env` used by docker-compose/Makefile flow.
cmd/parse/slashing/cmd.go, cmd/parse/slashing/params.go	Removes trailing whitespace.

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Copilot · 2026-02-11T16:40:18Z

types/evm_config/evm_config_test.go

+		tempFile, err := os.CreateTemp("", "config-*.yaml")
+		require.NoError(t, err)
+		defer os.Remove(tempFile.Name())
+
+		invalidYaml := []byte(`invalid: yaml: content`)
+		_, err = tempFile.Write(invalidYaml)
+		require.NoError(t, err)
+		require.NoError(t, tempFile.Close())
+
+		t.Setenv("JUNO_CONFIG", tempFile.Name())
+
+		cfg := ReadConfigFromFile()


TestGetConfig/Missing Config File doesn't set config.HomePath to the temp dir, so it can accidentally read a real config.yaml from the developer's environment and become flaky. Set config.HomePath = tempDir (and restore it) and avoid creating/setting unrelated JUNO_CONFIG state if it isn't used by GetConfig.

Suggested change

tempFile, err := os.CreateTemp("", "config-*.yaml")

require.NoError(t, err)

defer os.Remove(tempFile.Name())

invalidYaml := []byte(`invalid: yaml: content`)

_, err = tempFile.Write(invalidYaml)

require.NoError(t, err)

require.NoError(t, tempFile.Close())

t.Setenv("JUNO_CONFIG", tempFile.Name())

cfg := ReadConfigFromFile()

originalHomePath := config.HomePath

config.HomePath = tempDir

defer func() { config.HomePath = originalHomePath }()

cfg, err := GetConfig()

require.NoError(t, err)

Copilot · 2026-02-11T16:40:19Z

Makefile

+start: setup-env update-config build
+	@echo "Starting database services..."
+	@docker compose up -d
+	@echo "Waiting for database to be ready..."
+	@sleep 3
+	@echo "Starting callisto..."
+	@./build/callisto start
+.PHONY: start


The start/start-clean targets always invoke update-config, but update-config will fail with a cryptic cp error when CONFIG is not set (e.g., make start). Consider adding a guard that errors with a clear message when CONFIG is empty, or set a sensible default.

Makefile

types/evm_config/evm_config.go

Copilot · 2026-02-11T16:40:20Z

types/evm_config/evm_config.go

+	if _, err := os.Stat(file); os.IsNotExist(err) {
+		return Config{}, fmt.Errorf("config file does not exist")
+	}
+
+	bz, err := os.ReadFile(file)
+	if err != nil {
+		return Config{}, fmt.Errorf("error while reading config file: %s", err)


The errors returned by GetConfig are hard to diagnose because they omit the file path and don't wrap the underlying error. Consider including the resolved file path in the message and using %w when returning the read/stat errors so callers can inspect the cause.

Suggested change

if _, err := os.Stat(file); os.IsNotExist(err) {

return Config{}, fmt.Errorf("config file does not exist")

}

bz, err := os.ReadFile(file)

if err != nil {

return Config{}, fmt.Errorf("error while reading config file: %s", err)

if _, err := os.Stat(file); err != nil {

if os.IsNotExist(err) {

return Config{}, fmt.Errorf("config file %q does not exist: %w", file, err)

}

return Config{}, fmt.Errorf("failed to stat config file %q: %w", file, err)

}

bz, err := os.ReadFile(file)

if err != nil {

return Config{}, fmt.Errorf("error while reading config file %q: %w", file, err)

README.md

Copilot · 2026-02-11T16:40:20Z

README.md

+migrations_directory: migrations
+actions:
+  kind: synchronous
+  handler_webhook_baseurl: http://localhost:3000


The Hasura config example still shows handler_webhook_baseurl: http://localhost:3000, but the repository configuration now uses http://host.docker.internal:3000. Update this snippet so it matches the actual hasura/config.yaml behavior when running Hasura in Docker.

Suggested change

handler_webhook_baseurl: http://localhost:3000

handler_webhook_baseurl: http://host.docker.internal:3000

docker-compose.yml

JordiParraCrespo added 3 commits February 10, 2026 17:18

chore: improve local development setup

62ac984

fix: autodetect platform and update hasura docker compose based on that

ffee6aa

chore: migrate to xrplevm v9 and cosmos/evm

89b7577

Copilot AI review requested due to automatic review settings February 11, 2026 16:30

JordiParraCrespo force-pushed the chore/migrate-evmos-to-cosmos-evm branch from f3afbf1 to 89b7577 Compare February 11, 2026 16:30

Copilot started reviewing on behalf of JordiParraCrespo February 11, 2026 16:31 View session

Copilot AI reviewed Feb 11, 2026

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Migrate to Cosmos EVM and XRPLEVM v9#5

Migrate to Cosmos EVM and XRPLEVM v9#5
JordiParraCrespo wants to merge 4 commits intoxrplevm:chains/exrp/devnetfrom
JordiParraCrespo:chore/migrate-evmos-to-cosmos-evm

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	handler_webhook_baseurl: http://localhost:3000
	handler_webhook_baseurl: http://host.docker.internal:3000

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JordiParraCrespo commented Feb 11, 2026

Description

Main changes

Go Version

Direct Dependencies

Replace Directives

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Pull request overview

Reviewed changes

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