From 5a5782bca064b954fba0092ca5c7ddaea37f2325 Mon Sep 17 00:00:00 2001
From: Dan Book <grinnz@gmail.com>
Date: Tue, 2 Jun 2020 14:55:35 -0400
Subject: [PATCH] Consider Module::Build as undeclared prerequisite only if
 there are no configure phase prereqs declared

---
 lib/CPAN/Distribution.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/CPAN/Distribution.pm b/lib/CPAN/Distribution.pm
index 341210853..8c5720484 100644
--- a/lib/CPAN/Distribution.pm
+++ b/lib/CPAN/Distribution.pm
@@ -2882,7 +2882,7 @@ sub prereqs_for_slot {
         }
         if (-f "Build.PL"
             && ! -f File::Spec->catfile($self->{build_dir},"Makefile.PL")
-            && ! $merged->requirements_for_module("Module::Build")
+            && ! @{[ $merged->required_modules ]}
             && ! $CPAN::META->has_inst("Module::Build")
            ) {
             $CPAN::Frontend->mywarn(