--- Makefile.PL.orig	2018-07-11 10:08:00.000000000 -0700
+++ Makefile.PL	2018-07-11 10:08:20.000000000 -0700
@@ -1,3 +1,4 @@
+use lib '.';
 use inc::Module::Install;
 
 name           'Number-WithError';