template: stores the path

template/parse.go

@@ -310,5 +310,11 @@ func ParseFile(path string) (*Template, error) {
 	}
 	defer f.Close()
 
-	return Parse(f)
+	tpl, err := Parse(f)
+	if err != nil {
+		return nil, err
+	}
+
+	tpl.Path = path
+	return tpl, nil
 }

template/parse_test.go

@@ -272,11 +272,15 @@ func TestParse(t *testing.T) {
 	}
 
 	for _, tc := range cases {
+		path := fixtureDir(tc.File)
 		tpl, err := ParseFile(fixtureDir(tc.File))
 		if (err != nil) != tc.Err {
 			t.Fatalf("err: %s", err)
 		}
 
+		if tc.Result != nil {
+			tc.Result.Path = path
+		}
 		if tpl != nil {
 			tpl.RawContents = nil
 		}

template/template.go

@@ -11,6 +11,10 @@ import (
 // Template represents the parsed template that is used to configure
 // Packer builds.
 type Template struct {
+	// Path is the path to the template. This will be blank if Parse is
+	// used, but will be automatically populated by ParseFile.
+	Path string
+
 	Description string
 	MinVersion  string