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;