backport of commit 8e07fa34cf

packer/plugin.go

@@ -118,88 +118,6 @@ func (c *PluginConfig) Discover() error {
 	return nil
 }
 
-func (c *PluginConfig) discoverExternalComponents(path string) error {
-	var err error
-	log.Printf("[TRACE] discovering plugins in %s", path)
-
-	if !filepath.IsAbs(path) {
-		path, err = filepath.Abs(path)
-		if err != nil {
-			return err
-		}
-	}
-	var externallyUsed []string
-
-	pluginPaths, err := c.discoverSingle(filepath.Join(path, "packer-builder-*"))
-	if err != nil {
-		return err
-	}
-	for pluginName, pluginPath := range pluginPaths {
-		newPath := pluginPath // this needs to be stored in a new variable for the func below
-		c.Builders.Set(pluginName, func() (packersdk.Builder, error) {
-			return c.Client(newPath).Builder()
-		})
-		externallyUsed = append(externallyUsed, pluginName)
-	}
-	if len(externallyUsed) > 0 {
-		sort.Strings(externallyUsed)
-		log.Printf("[INFO] using external builders: %v", externallyUsed)
-		externallyUsed = nil
-	}
-
-	pluginPaths, err = c.discoverSingle(filepath.Join(path, "packer-post-processor-*"))
-	if err != nil {
-		return err
-	}
-	for pluginName, pluginPath := range pluginPaths {
-		newPath := pluginPath // this needs to be stored in a new variable for the func below
-		c.PostProcessors.Set(pluginName, func() (packersdk.PostProcessor, error) {
-			return c.Client(newPath).PostProcessor()
-		})
-		externallyUsed = append(externallyUsed, pluginName)
-	}
-	if len(externallyUsed) > 0 {
-		sort.Strings(externallyUsed)
-		log.Printf("using external post-processors %v", externallyUsed)
-		externallyUsed = nil
-	}
-
-	pluginPaths, err = c.discoverSingle(filepath.Join(path, "packer-provisioner-*"))
-	if err != nil {
-		return err
-	}
-	for pluginName, pluginPath := range pluginPaths {
-		newPath := pluginPath // this needs to be stored in a new variable for the func below
-		c.Provisioners.Set(pluginName, func() (packersdk.Provisioner, error) {
-			return c.Client(newPath).Provisioner()
-		})
-		externallyUsed = append(externallyUsed, pluginName)
-	}
-	if len(externallyUsed) > 0 {
-		sort.Strings(externallyUsed)
-		log.Printf("using external provisioners %v", externallyUsed)
-		externallyUsed = nil
-	}
-
-	pluginPaths, err = c.discoverSingle(filepath.Join(path, "packer-datasource-*"))
-	if err != nil {
-		return err
-	}
-	for pluginName, pluginPath := range pluginPaths {
-		newPath := pluginPath // this needs to be stored in a new variable for the func below
-		c.DataSources.Set(pluginName, func() (packersdk.Datasource, error) {
-			return c.Client(newPath).Datasource()
-		})
-		externallyUsed = append(externallyUsed, pluginName)
-	}
-	if len(externallyUsed) > 0 {
-		sort.Strings(externallyUsed)
-		log.Printf("using external datasource %v", externallyUsed)
-	}
-
-	return nil
-}
-
 func (c *PluginConfig) discoverLegacyMonoComponents(path string) error {
 	var err error
 	log.Printf("[TRACE] discovering plugins in %s", path)