prune/dedupe

npm.go

@@ -103,6 +103,26 @@ func (p *Plugins) ClearCache() error {
 	return cmd.Run()
 }
 
+func (p *Plugins) dedupe() error {
+	cmd, err := p.npmCmd("prune")
+	if err != nil {
+		return err
+	}
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func (p *Plugins) prune() error {
+	cmd, err := p.npmCmd("prune")
+	if err != nil {
+		return err
+	}
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
 func (p *Plugins) npmCmd(args ...string) (*exec.Cmd, error) {
 	if err := os.MkdirAll(p.modulesPath(), 0755); err != nil {
 		return nil, err

setup.go

@@ -23,7 +23,9 @@ var setupCmd = &Command{
 		for name, v := range pjson["dependencies"].(map[string]interface{}) {
 			plugins = append(plugins, name+"@"+v.(string))
 		}
-		corePlugins.installPackages(plugins...)
+		ExitIfError(corePlugins.installPackages(plugins...))
+		ExitIfError(corePlugins.dedupe())
+		ExitIfError(corePlugins.prune())
 		for _, plugin := range plugins {
 			plugin, err := corePlugins.ParsePlugin(strings.Split(plugin, "@")[0])
 			ExitIfError(err)