command/fix: cleaner

command/fix/command.go

@@ -49,15 +49,8 @@ func (c Command) Run(env packer.Environment, args []string) int {
 	// Close the file since we're done with that
 	tplF.Close()
 
-	// Run the template through the various fixers
-	fixers := []string{
-		"iso-md5",
-		"createtime",
-		"virtualbox-gaattach",
-	}
-
 	input := templateData
-	for _, name := range fixers {
+	for _, name := range FixerOrder {
 		var err error
 		fixer, ok := Fixers[name]
 		if !ok {

command/fix/fixer.go

@@ -15,10 +15,19 @@ type Fixer interface {
 // Fixers is the map of all available fixers, by name.
 var Fixers map[string]Fixer
 
+// FixerOrder is the default order the fixers should be run.
+var FixerOrder []string
+
 func init() {
 	Fixers = map[string]Fixer{
 		"iso-md5":             new(FixerISOMD5),
 		"createtime":          new(FixerCreateTime),
 		"virtualbox-gaattach": new(FixerVirtualBoxGAAttach),
 	}
+
+	FixerOrder = []string{
+		"iso-md5",
+		"createtime",
+		"virtualbox-gaattach",
+	}
 }