1 files changed, 7 insertions, 2 deletions
diff --git a/internal/rosa/perl.go b/internal/rosa/perl.go
index a828609b..705b1b8d 100644
--- a/internal/rosa/perl.go
+++ b/internal/rosa/perl.go
@@ -2,14 +2,19 @@ package rosa
 
 var _perl = H("perl")
 
+var _ Helper = new(MakeMakerHelper)
+
 // MakeMakerHelper builds projects using the included MakeMaker script.
 type MakeMakerHelper struct {
 	// Whether to skip the check target.
 	SkipCheck bool
 }
 
-// extra returns perl.
-func (*MakeMakerHelper) extra() P { return P{_perl, _make} }
+// tools returns perl and make.
+func (*MakeMakerHelper) tools() P { return P{_perl, _make} }
+
+// inputs returns perl.
+func (*MakeMakerHelper) inputs() P { return P{_perl} }
 
 // wantsChmod returns true.
 func (*MakeMakerHelper) wantsChmod() bool { return true }