diff -up Hash-FieldHash-0.15/Build.PL.orig Hash-FieldHash-0.15/Build.PL
--- Hash-FieldHash-0.15/Build.PL.orig 2017-05-18 12:00:21.298339432 +0200
+++ Hash-FieldHash-0.15/Build.PL 2017-05-18 12:02:29.216586570 +0200
@@ -9,6 +9,7 @@ use strict;
use warnings;
use utf8;
+BEGIN { push @INC, '.'; }
use builder::MyBuilder;
use File::Basename;
use File::Spec;