diff -up Module-Install-ExtraTests-0.008/Makefile.PL.orig Module-Install-ExtraTests-0.008/Makefile.PL
--- Module-Install-ExtraTests-0.008/Makefile.PL.orig	2017-05-17 09:10:47.882555187 +0200
+++ Module-Install-ExtraTests-0.008/Makefile.PL	2017-05-17 09:10:30.546634860 +0200
@@ -1,3 +1,5 @@
+BEGIN { push @INC, '.'; }
+
 use inc::Module::Install;
 name('Module-Install-ExtraTests');
 all_from('lib/Module/Install/ExtraTests.pm');