fix: allow wiring of evolve module to wire an SDK chain without overriding the start command

evolve/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- [#236](https://github.com/ignite/apps/pull/236) Add `--start` flag to `evolve add` command to optionally disable addition of the start command.
+
 ## [`v0.4.3`](https://github.com/ignite/apps/releases/tag/evolve/v0.4.3)
 
 - [#233](https://github.com/ignite/apps/pull/233) Bump dependencies.

evolve/cmd/add.go

@@ -18,6 +18,7 @@ const (
 	statusScaffolding = "Scaffolding..."
 
 	flagPath    = "path"
+	flagStart   = "start"
 	flagMigrate = "migrate"
 )
 
@@ -32,6 +33,11 @@ func AddHandler(ctx context.Context, cmd *plugin.ExecutedCommand) error {
 		return err
 	}
 
+	withStartCmd, err := flags.GetBool(flagStart)
+	if err != nil {
+		return err
+	}
+
 	migrateCometBFT, err := flags.GetBool(flagMigrate)
 	if err != nil {
 		return err
@@ -52,7 +58,7 @@ func AddHandler(ctx context.Context, cmd *plugin.ExecutedCommand) error {
 		return err
 	}
 
-	g, err := template.NewEvolveGenerator(c, migrateCometBFT)
+	g, err := template.NewEvolveGenerator(c, migrateCometBFT, withStartCmd)
 	if err != nil {
 		return err
 	}

evolve/cmd/cmd.go

@@ -23,6 +23,12 @@ func GetCommands() []*plugin.Command {
 							Shorthand: "p",
 							Type:      plugin.FlagTypeString,
 						},
+						{
+							Name:         flagStart,
+							Usage:        "modify start command to use ev-abci (set to false to only add migrate command)",
+							Type:         plugin.FlagTypeBool,
+							DefaultValue: "true",
+						},
 						{
 							Name:  flagMigrate,
 							Usage: "scaffolds the migrations helpers and modules (to use when migrating from CometBFT)",

evolve/template/generator.go

@@ -11,7 +11,7 @@ import (
 )
 
 // NewEvolveGenerator returns the generator to scaffold a evolve integration inside an app.
-func NewEvolveGenerator(chain *chain.Chain, withCometMigration bool) (*genny.Generator, error) {
+func NewEvolveGenerator(chain *chain.Chain, withCometMigration, withStartCmd bool) (*genny.Generator, error) {
 	g := genny.New()
 	ctx := plush.NewContext()
 	plushhelpers.ExtendPlushContext(ctx)
@@ -28,9 +28,12 @@ func NewEvolveGenerator(chain *chain.Chain, withCometMigration bool) (*genny.Gen
 		return nil, errors.Errorf("failed to update go.mod: %w", err)
 	}
 
-	g.RunFn(commandsStartModify(appPath, binaryName, chain.Version))
-	g.RunFn(commandsGenesisModify(appPath, binaryName))
-	g.RunFn(commandsRollbackModify(appPath, binaryName))
+	if withStartCmd {
+		g.RunFn(commandsStartModify(appPath, binaryName, chain.Version))
+		g.RunFn(commandsGenesisInitModify(appPath, binaryName))
+		g.RunFn(commandsRollbackModify(appPath, binaryName))
+	}
+	g.RunFn(commandsMigrateModify(appPath, binaryName))
 	if withCometMigration {
 		g.RunFn(migrateFromCometModify(appPath))
 	}

evolve/template/init.go

@@ -71,8 +71,9 @@ func commandsStartModify(appPath, binaryName string, version cosmosver.Version)
 	}
 }
 
-// commandsGenesisModify modifies the application genesis command to use evolve.
-func commandsGenesisModify(appPath, binaryName string) genny.RunFn {
+// commandsGenesisInitModify modifies the application genesis init command to use evolve.
+// this is only needed when the start command is also modified.
+func commandsGenesisInitModify(appPath, binaryName string) genny.RunFn {
 	return func(r *genny.Runner) error {
 		cmdPath := filepath.Join(appPath, "cmd", binaryName, "cmd/commands.go")
 		f, err := r.Disk.Find(cmdPath)
@@ -109,13 +110,38 @@ func commandsGenesisModify(appPath, binaryName string) genny.RunFn {
 		}
 
 		// modify the add commands arguments using xast.
-		alreadyAdded := false // to avoid adding the migrate command multiple times as there are multiple calls to `rootCmd.AddCommand`
 		content, err = xast.ModifyCaller(content, "rootCmd.AddCommand", func(args []string) ([]string, error) {
 			if strings.Contains(args[0], "InitCmd") {
 				args[0] = "genesisCmd"
 			}
 
-			// add migrate command
+			return args, nil
+		})
+
+		return r.File(genny.NewFileS(cmdPath, content))
+	}
+}
+
+// commandsMigrateModify adds the evolve migrate command to the application.
+func commandsMigrateModify(appPath, binaryName string) genny.RunFn {
+	return func(r *genny.Runner) error {
+		cmdPath := filepath.Join(appPath, "cmd", binaryName, "cmd/commands.go")
+		f, err := r.Disk.Find(cmdPath)
+		if err != nil {
+			return err
+		}
+
+		content, err := xast.AppendImports(
+			f.String(),
+			xast.WithNamedImport("abciserver", "github.com/evstack/ev-abci/server"),
+		)
+		if err != nil {
+			return err
+		}
+
+		// add migrate command
+		alreadyAdded := false // to avoid adding the migrate command multiple times as there are multiple calls to `rootCmd.AddCommand`
+		content, err = xast.ModifyCaller(content, "rootCmd.AddCommand", func(args []string) ([]string, error) {
 			if !alreadyAdded {
 				args = append(args, evolveV1MigrateCmd)
 				alreadyAdded = true

evolve/template/migrate.go

@@ -33,11 +33,26 @@ func migrateFromCometModify(appPath string) genny.RunFn {
 			return err
 		}
 
+		// add migrationmngr module config for depinject
+		moduleConfigTemplate := `{
+				Name:   migrationmngrtypes.ModuleName,
+				Config: appconfig.WrapAny(&migrationmngrmodule.Module{}),
+			},
+			%[1]v`
+		moduleConfigReplacement := fmt.Sprintf(moduleConfigTemplate, module.PlaceholderSgAppModuleConfig)
+		content = replacer.Replace(content, module.PlaceholderSgAppModuleConfig, moduleConfigReplacement)
+
+		// preblocker for migrationmngr
+		preBlockerTemplate := `migrationmngrtypes.ModuleName,
+						%[1]v`
+		preBlockerReplacement := fmt.Sprintf(preBlockerTemplate, "// this line is used by starport scaffolding # stargate/app/preBlockers")
+		content = replacer.Replace(content, "// this line is used by starport scaffolding # stargate/app/preBlockers", preBlockerReplacement)
+
 		// end block for migrationmngr
-		template := `migrationmngrtypes.ModuleName,
+		endBlockerTemplate := `migrationmngrtypes.ModuleName,
 %[1]v`
-		replacement := fmt.Sprintf(template, module.PlaceholderSgAppEndBlockers)
-		content = replacer.Replace(content, module.PlaceholderSgAppEndBlockers, replacement)
+		endBlockerReplacement := fmt.Sprintf(endBlockerTemplate, module.PlaceholderSgAppEndBlockers)
+		content = replacer.Replace(content, module.PlaceholderSgAppEndBlockers, endBlockerReplacement)
 
 		// replace staking blank import
 		content = strings.Replace(content, "github.com/cosmos/cosmos-sdk/x/staking", "github.com/evstack/ev-abci/modules/staking", 1)