init gno mod tidy

gnovm/cmd/gno/mod.go

@@ -30,6 +30,7 @@ func newModCmd(io *commands.IO) *commands.Command {
 
 	cmd.AddSubCommands(
 		newModDownloadCmd(io),
+		newModTody(io),
 	)
 
 	return cmd
@@ -51,6 +52,20 @@ func newModDownloadCmd(io *commands.IO) *commands.Command {
 	)
 }
 
+func newModTody(io *commands.IO) *commands.Command {
+	return commands.NewCommand(
+		commands.Metadata{
+			Name:       "tidy",
+			ShortUsage: "tidy",
+			ShortHelp:  "Add missing and remove unused modules",
+		},
+		commands.NewEmptyConfig(),
+		func(_ context.Context, args []string) error {
+			return execModTidy(args, io)
+		},
+	)
+}
+
 func (c *modDownloadCfg) RegisterFlags(fs *flag.FlagSet) {
 	fs.StringVar(
 		&c.remote,
@@ -118,3 +133,13 @@ func execModDownload(cfg *modDownloadCfg, args []string, io *commands.IO) error
 
 	return nil
 }
+
+func execModTidy(args []string, io *commands.IO) error {
+	if len(args) > 0 {
+		return flag.ErrHelp
+	}
+
+	// TODO: Implementation
+
+	return nil
+}