diff --git a/android/package_ctx.go b/android/package_ctx.go
index f354db8..c348c82 100644
--- a/android/package_ctx.go
+++ b/android/package_ctx.go
@@ -48,7 +48,7 @@
 
 var _ PathContext = &configErrorWrapper{}
 var _ errorfContext = &configErrorWrapper{}
-var _ PackageVarContext = &configErrorWrapper{}
+var _ PackageVarContext = &variableFuncContextWrapper{}
 var _ PackagePoolContext = &configErrorWrapper{}
 var _ PackageRuleContext = &configErrorWrapper{}
 
@@ -62,21 +62,33 @@
 	e.config.addNinjaFileDeps(deps...)
 }
 
-type PackageVarContext interface {
+type variableFuncContextWrapper struct {
+	configErrorWrapper
+	blueprint.VariableFuncContext
+}
+
+type PackagePoolContext interface {
 	PathContext
 	errorfContext
 }
 
-type PackagePoolContext PackageVarContext
-type PackageRuleContext PackageVarContext
+type PackageRuleContext PackagePoolContext
+
+type PackageVarContext interface {
+	PackagePoolContext
+	PathGlobContext
+}
 
 // VariableFunc wraps blueprint.PackageContext.VariableFunc, converting the interface{} config
 // argument to a PackageVarContext.
 func (p PackageContext) VariableFunc(name string,
 	f func(PackageVarContext) string) blueprint.Variable {
 
-	return p.PackageContext.VariableFunc(name, func(config interface{}) (string, error) {
-		ctx := &configErrorWrapper{p, config.(Config), nil}
+	return p.PackageContext.VariableFunc(name, func(bpctx blueprint.VariableFuncContext, config interface{}) (string, error) {
+		ctx := &variableFuncContextWrapper{
+			configErrorWrapper:  configErrorWrapper{p, config.(Config), nil},
+			VariableFuncContext: bpctx,
+		}
 		ret := f(ctx)
 		if len(ctx.errors) > 0 {
 			return "", ctx.errors[0]