feat: remove legacy migration and simplify deps

Author: n2p5

go.mod

@@ -148,7 +148,6 @@ require (
 	cosmossdk.io/x/tx v0.14.0
 	cosmossdk.io/x/upgrade v0.2.0
 	github.com/cosmos/cosmos-db v1.1.1
-	github.com/cosmos/interchain-security/v6 v6.4.1
 	github.com/informalsystems/itf-go v0.0.1
 	github.com/spf13/viper v1.20.1
 	golang.org/x/mod v0.24.0

go.sum

@@ -829,8 +829,6 @@ github.com/cosmos/ibc-go/v10 v10.2.0 h1:wlk/zqz2O0WRyE6UConoR1ci2HSW02P9ywamZCh5
 github.com/cosmos/ibc-go/v10 v10.2.0/go.mod h1:ijeyJ1FDvXoc5w+rlhpMntjhZ558EF02SBFjroW1hPo=
 github.com/cosmos/ics23/go v0.11.0 h1:jk5skjT0TqX5e5QJbEnwXIS2yI2vnmLOgpQPeM5RtnU=
 github.com/cosmos/ics23/go v0.11.0/go.mod h1:A8OjxPE67hHST4Icw94hOxxFEJMBG031xIGF/JHNIY0=
-github.com/cosmos/interchain-security/v6 v6.4.1 h1:DzBDjPQIYUJiF0ioNHkvmcS629htvCu9r5gFb+m7mms=
-github.com/cosmos/interchain-security/v6 v6.4.1/go.mod h1:yTbAxgcNKQ+/x2obvnHtxnOjQ5AcML4gb9V0P0e1rds=
 github.com/cosmos/ledger-cosmos-go v0.14.0 h1:WfCHricT3rPbkPSVKRH+L4fQGKYHuGOK9Edpel8TYpE=
 github.com/cosmos/ledger-cosmos-go v0.14.0/go.mod h1:E07xCWSBl3mTGofZ2QnL4cIUzMbbGVyik84QYKbX3RA=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=

x/ccv/consumer/keeper/migrations.go

@@ -1,15 +1,11 @@
 package keeper
 
 import (
-	sdk "github.com/cosmos/cosmos-sdk/types"
 	paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
-
-	v2 "github.com/cosmos/interchain-security/v5/x/ccv/consumer/migrations/v2"
-	v3 "github.com/cosmos/interchain-security/v5/x/ccv/consumer/migrations/v3"
-	v4 "github.com/cosmos/interchain-security/v6/x/ccv/consumer/migrations/v4"
 )
 
 // Migrator is a struct for handling in-place store migrations.
+// Note: This is a complete fork, so no migrations are implemented.
 type Migrator struct {
 	keeper     Keeper
 	paramSpace paramtypes.Subspace
@@ -19,25 +15,3 @@ type Migrator struct {
 func NewMigrator(keeper Keeper, paramspace paramtypes.Subspace) Migrator {
 	return Migrator{keeper: keeper, paramSpace: paramspace}
 }
-
-// Migrate1to2 migrates x/ccvconsumer state from consensus version 1 to 2.
-func (m Migrator) Migrate1to2(ctx sdk.Context) error {
-	store := ctx.KVStore(m.keeper.storeKey)
-	return v2.MigrateConsumerPacketData(ctx, store)
-}
-
-// Migrate2to3 migrates x/ccvconsumer from consensus version 2 to 3.
-// This migration is necessary to move the consumer module legacy params.
-func (m Migrator) Migrate2to3(ctx sdk.Context) error {
-	store := ctx.KVStore(m.keeper.storeKey)
-	cdc := m.keeper.cdc
-	return v3.MigrateLegacyParams(ctx, cdc, store, m.paramSpace)
-}
-
-// Migrate3to4 migrates x/ccvconsumer from consensus version 3 to 4.
-func (m Migrator) Migrate3to4(ctx sdk.Context) error {
-	store := ctx.KVStore(m.keeper.storeKey)
-	v4.CleanupState(store)
-
-	return nil
-}

x/ccv/consumer/module.go

@@ -123,13 +123,8 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	consumertypes.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(&am.keeper))
 	consumertypes.RegisterQueryServer(cfg.QueryServer(), am.keeper)
 
-	m := keeper.NewMigrator(am.keeper, am.paramSpace)
-	if err := cfg.RegisterMigration(consumertypes.ModuleName, 1, m.Migrate1to2); err != nil {
-		panic(fmt.Sprintf("failed to register migrator for %s: %s", consumertypes.ModuleName, err))
-	}
-	if err := cfg.RegisterMigration(consumertypes.ModuleName, 2, m.Migrate2to3); err != nil {
-		panic(fmt.Sprintf("failed to register migrator for %s: %s -- from 2 -> 3", consumertypes.ModuleName, err))
-	}
+	// No migrations needed for this fork
+	_ = keeper.NewMigrator(am.keeper, am.paramSpace)
 }
 
 // InitGenesis performs genesis initialization for the consumer module. It returns